algebra.algebra.hom ⟷ Mathlib.Algebra.Algebra.Hom

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -119,11 +119,9 @@ instance : AlgHomClass (A →ₐ[R] B) R A B
   map_one := map_one'
   commutes f := f.commutes'
 
-#print AlgHom.coeOutRingHom /-
-instance coeOutRingHom : Coe (A →ₐ[R] B) (A →+* B) :=
+instance coeRingHom : Coe (A →ₐ[R] B) (A →+* B) :=
   ⟨AlgHom.toRingHom⟩
-#align alg_hom.coe_ring_hom AlgHom.coeOutRingHom
--/
+#align alg_hom.coe_ring_hom AlgHom.coeRingHom
 
 #print AlgHom.coeOutMonoidHom /-
 instance coeOutMonoidHom : Coe (A →ₐ[R] B) (A →* B) :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

@@ -177,13 +177,13 @@ variable (φ : A →ₐ[R] B)
 
 #print AlgHom.coe_fn_injective /-
 theorem coe_fn_injective : @Function.Injective (A →ₐ[R] B) (A → B) coeFn :=
-  FunLike.coe_injective
+  DFunLike.coe_injective
 #align alg_hom.coe_fn_injective AlgHom.coe_fn_injective
 -/
 
 #print AlgHom.coe_fn_inj /-
 theorem coe_fn_inj {φ₁ φ₂ : A →ₐ[R] B} : (φ₁ : A → B) = φ₂ ↔ φ₁ = φ₂ :=
-  FunLike.coe_fn_eq
+  DFunLike.coe_fn_eq
 #align alg_hom.coe_fn_inj AlgHom.coe_fn_inj
 -/
 
@@ -207,26 +207,26 @@ theorem coe_addMonoidHom_injective : Function.Injective (coe : (A →ₐ[R] B) 
 
 #print AlgHom.congr_fun /-
 protected theorem congr_fun {φ₁ φ₂ : A →ₐ[R] B} (H : φ₁ = φ₂) (x : A) : φ₁ x = φ₂ x :=
-  FunLike.congr_fun H x
+  DFunLike.congr_fun H x
 #align alg_hom.congr_fun AlgHom.congr_fun
 -/
 
 #print AlgHom.congr_arg /-
 protected theorem congr_arg (φ : A →ₐ[R] B) {x y : A} (h : x = y) : φ x = φ y :=
-  FunLike.congr_arg φ h
+  DFunLike.congr_arg φ h
 #align alg_hom.congr_arg AlgHom.congr_arg
 -/
 
 #print AlgHom.ext /-
 @[ext]
 theorem ext {φ₁ φ₂ : A →ₐ[R] B} (H : ∀ x, φ₁ x = φ₂ x) : φ₁ = φ₂ :=
-  FunLike.ext _ _ H
+  DFunLike.ext _ _ H
 #align alg_hom.ext AlgHom.ext
 -/
 
 #print AlgHom.ext_iff /-
 theorem ext_iff {φ₁ φ₂ : A →ₐ[R] B} : φ₁ = φ₂ ↔ ∀ x, φ₁ x = φ₂ x :=
-  FunLike.ext_iff
+  DFunLike.ext_iff
 #align alg_hom.ext_iff AlgHom.ext_iff
 -/
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/ce64cd319bb6b3e82f31c2d38e79080d377be451

@@ -3,7 +3,7 @@ Copyright (c) 2018 Kenny Lau. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Yury Kudryashov
 -/
-import Mathbin.Algebra.Algebra.Basic
+import Algebra.Algebra.Basic
 
 #align_import algebra.algebra.hom from "leanprover-community/mathlib"@"23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6"
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/32a7e535287f9c73f2e4d2aef306a39190f0b504

@@ -115,7 +115,7 @@ instance : AlgHomClass (A →ₐ[R] B) R A B
   coe_injective' f g h := by cases f; cases g; congr
   map_add := map_add'
   map_zero := map_zero'
-  map_mul := map_mul'
+  map_hMul := map_mul'
   map_one := map_one'
   commutes f := f.commutes'
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/8ea5598db6caeddde6cb734aa179cc2408dbd345

@@ -2,14 +2,11 @@
 Copyright (c) 2018 Kenny Lau. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Yury Kudryashov
-
-! This file was ported from Lean 3 source module algebra.algebra.hom
-! leanprover-community/mathlib commit 23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Algebra.Algebra.Basic
 
+#align_import algebra.algebra.hom from "leanprover-community/mathlib"@"23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6"
+
 /-!
 # Homomorphisms of `R`-algebras
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/9fb8964792b4237dac6200193a0d533f1b3f7423

@@ -45,10 +45,8 @@ structure AlgHom (R : Type u) (A : Type v) (B : Type w) [CommSemiring R] [Semiri
 run_cmd
   tactic.add_doc_string `alg_hom.to_ring_hom "Reinterpret an `alg_hom` as a `ring_hom`"
 
--- mathport name: «expr →ₐ »
 infixr:25 " →ₐ " => AlgHom _
 
--- mathport name: «expr →ₐ[ ] »
 notation:25 A " →ₐ[" R "] " B => AlgHom R A B
 
 #print AlgHomClass /-
@@ -100,15 +98,19 @@ instance : CoeFun (A →ₐ[R] B) fun _ => A → B :=
 
 initialize_simps_projections AlgHom (toFun → apply)
 
+#print AlgHom.coe_coe /-
 @[simp, protected]
 theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=
   rfl
 #align alg_hom.coe_coe AlgHom.coe_coe
+-/
 
+#print AlgHom.toFun_eq_coe /-
 @[simp]
 theorem toFun_eq_coe (f : A →ₐ[R] B) : f.toFun = f :=
   rfl
 #align alg_hom.to_fun_eq_coe AlgHom.toFun_eq_coe
+-/
 
 instance : AlgHomClass (A →ₐ[R] B) R A B
     where
@@ -120,151 +122,215 @@ instance : AlgHomClass (A →ₐ[R] B) R A B
   map_one := map_one'
   commutes f := f.commutes'
 
+#print AlgHom.coeOutRingHom /-
 instance coeOutRingHom : Coe (A →ₐ[R] B) (A →+* B) :=
   ⟨AlgHom.toRingHom⟩
 #align alg_hom.coe_ring_hom AlgHom.coeOutRingHom
+-/
 
+#print AlgHom.coeOutMonoidHom /-
 instance coeOutMonoidHom : Coe (A →ₐ[R] B) (A →* B) :=
   ⟨fun f => ↑(f : A →+* B)⟩
 #align alg_hom.coe_monoid_hom AlgHom.coeOutMonoidHom
+-/
 
+#print AlgHom.coeOutAddMonoidHom /-
 instance coeOutAddMonoidHom : Coe (A →ₐ[R] B) (A →+ B) :=
   ⟨fun f => ↑(f : A →+* B)⟩
 #align alg_hom.coe_add_monoid_hom AlgHom.coeOutAddMonoidHom
+-/
 
+#print AlgHom.coe_mks /-
 @[simp, norm_cast]
 theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
   rfl
 #align alg_hom.coe_mk AlgHom.coe_mks
+-/
 
+#print AlgHom.toRingHom_eq_coe /-
 -- make the coercion the simp-normal form
 @[simp]
 theorem toRingHom_eq_coe (f : A →ₐ[R] B) : f.toRingHom = f :=
   rfl
 #align alg_hom.to_ring_hom_eq_coe AlgHom.toRingHom_eq_coe
+-/
 
+#print AlgHom.coe_toRingHom /-
 @[simp, norm_cast]
 theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
   rfl
 #align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHom
+-/
 
+#print AlgHom.coe_toMonoidHom /-
 @[simp, norm_cast]
 theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
   rfl
 #align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHom
+-/
 
+#print AlgHom.coe_toAddMonoidHom /-
 @[simp, norm_cast]
 theorem coe_toAddMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →+ B) = f :=
   rfl
 #align alg_hom.coe_to_add_monoid_hom AlgHom.coe_toAddMonoidHom
+-/
 
 variable (φ : A →ₐ[R] B)
 
+#print AlgHom.coe_fn_injective /-
 theorem coe_fn_injective : @Function.Injective (A →ₐ[R] B) (A → B) coeFn :=
   FunLike.coe_injective
 #align alg_hom.coe_fn_injective AlgHom.coe_fn_injective
+-/
 
+#print AlgHom.coe_fn_inj /-
 theorem coe_fn_inj {φ₁ φ₂ : A →ₐ[R] B} : (φ₁ : A → B) = φ₂ ↔ φ₁ = φ₂ :=
   FunLike.coe_fn_eq
 #align alg_hom.coe_fn_inj AlgHom.coe_fn_inj
+-/
 
+#print AlgHom.coe_ringHom_injective /-
 theorem coe_ringHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →+* B) := fun φ₁ φ₂ H =>
   coe_fn_injective <| show ((φ₁ : A →+* B) : A → B) = ((φ₂ : A →+* B) : A → B) from congr_arg _ H
 #align alg_hom.coe_ring_hom_injective AlgHom.coe_ringHom_injective
+-/
 
+#print AlgHom.coe_monoidHom_injective /-
 theorem coe_monoidHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →* B) :=
   RingHom.coe_monoidHom_injective.comp coe_ringHom_injective
 #align alg_hom.coe_monoid_hom_injective AlgHom.coe_monoidHom_injective
+-/
 
+#print AlgHom.coe_addMonoidHom_injective /-
 theorem coe_addMonoidHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →+ B) :=
   RingHom.coe_addMonoidHom_injective.comp coe_ringHom_injective
 #align alg_hom.coe_add_monoid_hom_injective AlgHom.coe_addMonoidHom_injective
+-/
 
+#print AlgHom.congr_fun /-
 protected theorem congr_fun {φ₁ φ₂ : A →ₐ[R] B} (H : φ₁ = φ₂) (x : A) : φ₁ x = φ₂ x :=
   FunLike.congr_fun H x
 #align alg_hom.congr_fun AlgHom.congr_fun
+-/
 
+#print AlgHom.congr_arg /-
 protected theorem congr_arg (φ : A →ₐ[R] B) {x y : A} (h : x = y) : φ x = φ y :=
   FunLike.congr_arg φ h
 #align alg_hom.congr_arg AlgHom.congr_arg
+-/
 
+#print AlgHom.ext /-
 @[ext]
 theorem ext {φ₁ φ₂ : A →ₐ[R] B} (H : ∀ x, φ₁ x = φ₂ x) : φ₁ = φ₂ :=
   FunLike.ext _ _ H
 #align alg_hom.ext AlgHom.ext
+-/
 
+#print AlgHom.ext_iff /-
 theorem ext_iff {φ₁ φ₂ : A →ₐ[R] B} : φ₁ = φ₂ ↔ ∀ x, φ₁ x = φ₂ x :=
   FunLike.ext_iff
 #align alg_hom.ext_iff AlgHom.ext_iff
+-/
 
+#print AlgHom.mk_coe /-
 @[simp]
 theorem mk_coe {f : A →ₐ[R] B} (h₁ h₂ h₃ h₄ h₅) : (⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
   ext fun _ => rfl
 #align alg_hom.mk_coe AlgHom.mk_coe
+-/
 
+#print AlgHom.commutes /-
 @[simp]
 theorem commutes (r : R) : φ (algebraMap R A r) = algebraMap R B r :=
   φ.commutes' r
 #align alg_hom.commutes AlgHom.commutes
+-/
 
+#print AlgHom.comp_algebraMap /-
 theorem comp_algebraMap : (φ : A →+* B).comp (algebraMap R A) = algebraMap R B :=
   RingHom.ext <| φ.commutes
 #align alg_hom.comp_algebra_map AlgHom.comp_algebraMap
+-/
 
+#print AlgHom.map_add /-
 protected theorem map_add (r s : A) : φ (r + s) = φ r + φ s :=
   map_add _ _ _
 #align alg_hom.map_add AlgHom.map_add
+-/
 
+#print AlgHom.map_zero /-
 protected theorem map_zero : φ 0 = 0 :=
   map_zero _
 #align alg_hom.map_zero AlgHom.map_zero
+-/
 
+#print AlgHom.map_mul /-
 protected theorem map_mul (x y) : φ (x * y) = φ x * φ y :=
   map_mul _ _ _
 #align alg_hom.map_mul AlgHom.map_mul
+-/
 
+#print AlgHom.map_one /-
 protected theorem map_one : φ 1 = 1 :=
   map_one _
 #align alg_hom.map_one AlgHom.map_one
+-/
 
+#print AlgHom.map_pow /-
 protected theorem map_pow (x : A) (n : ℕ) : φ (x ^ n) = φ x ^ n :=
   map_pow _ _ _
 #align alg_hom.map_pow AlgHom.map_pow
+-/
 
+#print AlgHom.map_smul /-
 @[simp]
 protected theorem map_smul (r : R) (x : A) : φ (r • x) = r • φ x :=
   map_smul _ _ _
 #align alg_hom.map_smul AlgHom.map_smul
+-/
 
+#print AlgHom.map_sum /-
 protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∑ x in s, f x) = ∑ x in s, φ (f x) :=
   map_sum _ _ _
 #align alg_hom.map_sum AlgHom.map_sum
+-/
 
+#print AlgHom.map_finsupp_sum /-
 protected theorem map_finsupp_sum {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Sum g) = f.Sum fun i a => φ (g i a) :=
   map_finsupp_sum _ _ _
 #align alg_hom.map_finsupp_sum AlgHom.map_finsupp_sum
+-/
 
+#print AlgHom.map_bit0 /-
 protected theorem map_bit0 (x) : φ (bit0 x) = bit0 (φ x) :=
   map_bit0 _ _
 #align alg_hom.map_bit0 AlgHom.map_bit0
+-/
 
+#print AlgHom.map_bit1 /-
 protected theorem map_bit1 (x) : φ (bit1 x) = bit1 (φ x) :=
   map_bit1 _ _
 #align alg_hom.map_bit1 AlgHom.map_bit1
+-/
 
+#print AlgHom.mk' /-
 /-- If a `ring_hom` is `R`-linear, then it is an `alg_hom`. -/
 def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →ₐ[R] B :=
   { f with
     toFun := f
     commutes' := fun c => by simp only [Algebra.algebraMap_eq_smul_one, h, f.map_one] }
 #align alg_hom.mk' AlgHom.mk'
+-/
 
+#print AlgHom.coe_mk' /-
 @[simp]
 theorem coe_mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : ⇑(mk' f h) = f :=
   rfl
 #align alg_hom.coe_mk' AlgHom.coe_mk'
+-/
 
 section
 
@@ -277,21 +343,27 @@ protected def id : A →ₐ[R] A :=
 #align alg_hom.id AlgHom.id
 -/
 
+#print AlgHom.coe_id /-
 @[simp]
 theorem coe_id : ⇑(AlgHom.id R A) = id :=
   rfl
 #align alg_hom.coe_id AlgHom.coe_id
+-/
 
+#print AlgHom.id_toRingHom /-
 @[simp]
 theorem id_toRingHom : (AlgHom.id R A : A →+* A) = RingHom.id _ :=
   rfl
 #align alg_hom.id_to_ring_hom AlgHom.id_toRingHom
+-/
 
 end
 
+#print AlgHom.id_apply /-
 theorem id_apply (p : A) : AlgHom.id R A p = p :=
   rfl
 #align alg_hom.id_apply AlgHom.id_apply
+-/
 
 #print AlgHom.comp /-
 /-- Composition of algebra homeomorphisms. -/
@@ -301,19 +373,25 @@ def comp (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) : A →ₐ[R] C :=
 #align alg_hom.comp AlgHom.comp
 -/
 
+#print AlgHom.coe_comp /-
 @[simp]
 theorem coe_comp (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) : ⇑(φ₁.comp φ₂) = φ₁ ∘ φ₂ :=
   rfl
 #align alg_hom.coe_comp AlgHom.coe_comp
+-/
 
+#print AlgHom.comp_apply /-
 theorem comp_apply (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) (p : A) : φ₁.comp φ₂ p = φ₁ (φ₂ p) :=
   rfl
 #align alg_hom.comp_apply AlgHom.comp_apply
+-/
 
+#print AlgHom.comp_toRingHom /-
 theorem comp_toRingHom (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) :
     (φ₁.comp φ₂ : A →+* C) = (φ₁ : B →+* C).comp ↑φ₂ :=
   rfl
 #align alg_hom.comp_to_ring_hom AlgHom.comp_toRingHom
+-/
 
 #print AlgHom.comp_id /-
 @[simp]
@@ -345,10 +423,12 @@ def toLinearMap : A →ₗ[R] B where
 #align alg_hom.to_linear_map AlgHom.toLinearMap
 -/
 
+#print AlgHom.toLinearMap_apply /-
 @[simp]
 theorem toLinearMap_apply (p : A) : φ.toLinearMap p = φ p :=
   rfl
 #align alg_hom.to_linear_map_apply AlgHom.toLinearMap_apply
+-/
 
 #print AlgHom.toLinearMap_injective /-
 theorem toLinearMap_injective : Function.Injective (toLinearMap : _ → A →ₗ[R] B) := fun φ₁ φ₂ h =>
@@ -371,6 +451,7 @@ theorem toLinearMap_id : toLinearMap (AlgHom.id R A) = LinearMap.id :=
 #align alg_hom.to_linear_map_id AlgHom.toLinearMap_id
 -/
 
+#print AlgHom.ofLinearMap /-
 /-- Promote a `linear_map` to an `alg_hom` by supplying proofs about the behavior on `1` and `*`. -/
 @[simps]
 def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x * y) = f x * f y) :
@@ -381,31 +462,42 @@ def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x
     map_mul' := map_mul
     commutes' := fun c => by simp only [Algebra.algebraMap_eq_smul_one, f.map_smul, map_one] }
 #align alg_hom.of_linear_map AlgHom.ofLinearMap
+-/
 
+#print AlgHom.ofLinearMap_toLinearMap /-
 @[simp]
 theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
     ofLinearMap φ.toLinearMap map_one map_mul = φ := by ext; rfl
 #align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMap
+-/
 
+#print AlgHom.toLinearMap_ofLinearMap /-
 @[simp]
 theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
     toLinearMap (ofLinearMap f map_one map_mul) = f := by ext; rfl
 #align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMap
+-/
 
+#print AlgHom.ofLinearMap_id /-
 @[simp]
 theorem ofLinearMap_id (map_one) (map_mul) :
     ofLinearMap LinearMap.id map_one map_mul = AlgHom.id R A :=
   ext fun _ => rfl
 #align alg_hom.of_linear_map_id AlgHom.ofLinearMap_id
+-/
 
+#print AlgHom.map_smul_of_tower /-
 theorem map_smul_of_tower {R'} [SMul R' A] [SMul R' B] [LinearMap.CompatibleSMul A B R' R] (r : R')
     (x : A) : φ (r • x) = r • φ x :=
   φ.toLinearMap.map_smul_of_tower r x
 #align alg_hom.map_smul_of_tower AlgHom.map_smul_of_tower
+-/
 
+#print AlgHom.map_list_prod /-
 theorem map_list_prod (s : List A) : φ s.Prod = (s.map φ).Prod :=
   φ.toRingHom.map_list_prod s
 #align alg_hom.map_list_prod AlgHom.map_list_prod
+-/
 
 #print AlgHom.End /-
 @[simps (config := { attrs := [] }) mul one]
@@ -418,20 +510,26 @@ instance End : Monoid (A →ₐ[R] A) where
 #align alg_hom.End AlgHom.End
 -/
 
+#print AlgHom.one_apply /-
 @[simp]
 theorem one_apply (x : A) : (1 : A →ₐ[R] A) x = x :=
   rfl
 #align alg_hom.one_apply AlgHom.one_apply
+-/
 
+#print AlgHom.mul_apply /-
 @[simp]
 theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
   rfl
 #align alg_hom.mul_apply AlgHom.mul_apply
+-/
 
+#print AlgHom.algebraMap_eq_apply /-
 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=
   h ▸ (f.commutes _).symm
 #align alg_hom.algebra_map_eq_apply AlgHom.algebraMap_eq_apply
+-/
 
 end Semiring
 
@@ -441,19 +539,25 @@ variable [CommSemiring R] [CommSemiring A] [CommSemiring B]
 
 variable [Algebra R A] [Algebra R B] (φ : A →ₐ[R] B)
 
+#print AlgHom.map_multiset_prod /-
 protected theorem map_multiset_prod (s : Multiset A) : φ s.Prod = (s.map φ).Prod :=
   map_multiset_prod _ _
 #align alg_hom.map_multiset_prod AlgHom.map_multiset_prod
+-/
 
+#print AlgHom.map_prod /-
 protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∏ x in s, f x) = ∏ x in s, φ (f x) :=
   map_prod _ _ _
 #align alg_hom.map_prod AlgHom.map_prod
+-/
 
+#print AlgHom.map_finsupp_prod /-
 protected theorem map_finsupp_prod {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Prod g) = f.Prod fun i a => φ (g i a) :=
   map_finsupp_prod _ _ _
 #align alg_hom.map_finsupp_prod AlgHom.map_finsupp_prod
+-/
 
 end CommSemiring
 
@@ -463,13 +567,17 @@ variable [CommSemiring R] [Ring A] [Ring B]
 
 variable [Algebra R A] [Algebra R B] (φ : A →ₐ[R] B)
 
+#print AlgHom.map_neg /-
 protected theorem map_neg (x) : φ (-x) = -φ x :=
   map_neg _ _
 #align alg_hom.map_neg AlgHom.map_neg
+-/
 
+#print AlgHom.map_sub /-
 protected theorem map_sub (x y) : φ (x - y) = φ x - φ y :=
   map_sub _ _ _
 #align alg_hom.map_sub AlgHom.map_sub
+-/
 
 end Ring
 
@@ -488,10 +596,12 @@ def toNatAlgHom [Semiring R] [Semiring S] (f : R →+* S) : R →ₐ[ℕ] S :=
 #align ring_hom.to_nat_alg_hom RingHom.toNatAlgHom
 -/
 
+#print RingHom.toIntAlgHom /-
 /-- Reinterpret a `ring_hom` as a `ℤ`-algebra homomorphism. -/
 def toIntAlgHom [Ring R] [Ring S] [Algebra ℤ R] [Algebra ℤ S] (f : R →+* S) : R →ₐ[ℤ] S :=
   { f with commutes' := fun n => by simp }
 #align ring_hom.to_int_alg_hom RingHom.toIntAlgHom
+-/
 
 #print RingHom.toRatAlgHom /-
 /-- Reinterpret a `ring_hom` as a `ℚ`-algebra homomorphism. This actually yields an equivalence,
@@ -501,11 +611,13 @@ def toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →+* S
 #align ring_hom.to_rat_alg_hom RingHom.toRatAlgHom
 -/
 
+#print RingHom.toRatAlgHom_toRingHom /-
 @[simp]
 theorem toRatAlgHom_toRingHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →+* S) :
     ↑f.toRatAlgHom = f :=
   RingHom.ext fun x => rfl
 #align ring_hom.to_rat_alg_hom_to_ring_hom RingHom.toRatAlgHom_toRingHom
+-/
 
 end RingHom
 
@@ -513,11 +625,13 @@ section
 
 variable {R S : Type _}
 
+#print AlgHom.toRingHom_toRatAlgHom /-
 @[simp]
 theorem AlgHom.toRingHom_toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →ₐ[ℚ] S) :
     (f : R →+* S).toRatAlgHom = f :=
   AlgHom.ext fun x => rfl
 #align alg_hom.to_ring_hom_to_rat_alg_hom AlgHom.toRingHom_toRatAlgHom
+-/
 
 #print RingHom.equivRatAlgHom /-
 /-- The equivalence between `ring_hom` and `ℚ`-algebra homomorphisms. -/
@@ -548,9 +662,11 @@ def ofId : R →ₐ[R] A :=
 
 variable {R}
 
+#print Algebra.ofId_apply /-
 theorem ofId_apply (r) : ofId R A r = algebraMap R A r :=
   rfl
 #align algebra.of_id_apply Algebra.ofId_apply
+-/
 
 end Algebra
 
@@ -560,6 +676,7 @@ variable {M G : Type _} (R A : Type _) [CommSemiring R] [Semiring A] [Algebra R
 
 variable [Monoid M] [MulSemiringAction M A] [SMulCommClass M R A]
 
+#print MulSemiringAction.toAlgHom /-
 /-- Each element of the monoid defines a algebra homomorphism.
 
 This is a stronger version of `mul_semiring_action.to_ring_hom` and
@@ -572,11 +689,14 @@ def toAlgHom (m : M) : A →ₐ[R] A :=
     toFun := fun a => m • a
     commutes' := smul_algebraMap _ }
 #align mul_semiring_action.to_alg_hom MulSemiringAction.toAlgHom
+-/
 
+#print MulSemiringAction.toAlgHom_injective /-
 theorem toAlgHom_injective [FaithfulSMul M A] :
     Function.Injective (MulSemiringAction.toAlgHom R A : M → A →ₐ[R] A) := fun m₁ m₂ h =>
   eq_of_smul_eq_smul fun r => AlgHom.ext_iff.1 h r
 #align mul_semiring_action.to_alg_hom_injective MulSemiringAction.toAlgHom_injective
+-/
 
 end MulSemiringAction
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/cca40788df1b8755d5baf17ab2f27dacc2e17acb

@@ -37,7 +37,7 @@ universe u v w u₁ v₁
 /-- Defining the homomorphism in the category R-Alg. -/
 @[nolint has_nonempty_instance]
 structure AlgHom (R : Type u) (A : Type v) (B : Type w) [CommSemiring R] [Semiring A] [Semiring B]
-  [Algebra R A] [Algebra R B] extends RingHom A B where
+    [Algebra R A] [Algebra R B] extends RingHom A B where
   commutes' : ∀ r : R, to_fun (algebraMap R A r) = algebraMap R B r
 #align alg_hom AlgHom
 -/
@@ -55,8 +55,8 @@ notation:25 A " →ₐ[" R "] " B => AlgHom R A B
 /-- `alg_hom_class F R A B` asserts `F` is a type of bundled algebra homomorphisms
 from `A` to `B`.  -/
 class AlgHomClass (F : Type _) (R : outParam (Type _)) (A : outParam (Type _))
-  (B : outParam (Type _)) [CommSemiring R] [Semiring A] [Semiring B] [Algebra R A]
-  [Algebra R B] extends RingHomClass F A B where
+    (B : outParam (Type _)) [CommSemiring R] [Semiring A] [Semiring B] [Algebra R A]
+    [Algebra R B] extends RingHomClass F A B where
   commutes : ∀ (f : F) (r : R), f (algebraMap R A r) = algebraMap R B r
 #align alg_hom_class AlgHomClass
 -/

mathlib commit https://github.com/leanprover-community/mathlib/commit/cca40788df1b8755d5baf17ab2f27dacc2e17acb

@@ -160,17 +160,13 @@ theorem coe_toAddMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →+ B) = f :=
 
 variable (φ : A →ₐ[R] B)
 
-#print AlgHom.coe_fn_injective /-
 theorem coe_fn_injective : @Function.Injective (A →ₐ[R] B) (A → B) coeFn :=
   FunLike.coe_injective
 #align alg_hom.coe_fn_injective AlgHom.coe_fn_injective
--/
 
-#print AlgHom.coe_fn_inj /-
 theorem coe_fn_inj {φ₁ φ₂ : A →ₐ[R] B} : (φ₁ : A → B) = φ₂ ↔ φ₁ = φ₂ :=
   FunLike.coe_fn_eq
 #align alg_hom.coe_fn_inj AlgHom.coe_fn_inj
--/
 
 theorem coe_ringHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →+* B) := fun φ₁ φ₂ H =>
   coe_fn_injective <| show ((φ₁ : A →+* B) : A → B) = ((φ₂ : A →+* B) : A → B) from congr_arg _ H
@@ -184,85 +180,61 @@ theorem coe_addMonoidHom_injective : Function.Injective (coe : (A →ₐ[R] B) 
   RingHom.coe_addMonoidHom_injective.comp coe_ringHom_injective
 #align alg_hom.coe_add_monoid_hom_injective AlgHom.coe_addMonoidHom_injective
 
-#print AlgHom.congr_fun /-
 protected theorem congr_fun {φ₁ φ₂ : A →ₐ[R] B} (H : φ₁ = φ₂) (x : A) : φ₁ x = φ₂ x :=
   FunLike.congr_fun H x
 #align alg_hom.congr_fun AlgHom.congr_fun
--/
 
-#print AlgHom.congr_arg /-
 protected theorem congr_arg (φ : A →ₐ[R] B) {x y : A} (h : x = y) : φ x = φ y :=
   FunLike.congr_arg φ h
 #align alg_hom.congr_arg AlgHom.congr_arg
--/
 
-#print AlgHom.ext /-
 @[ext]
 theorem ext {φ₁ φ₂ : A →ₐ[R] B} (H : ∀ x, φ₁ x = φ₂ x) : φ₁ = φ₂ :=
   FunLike.ext _ _ H
 #align alg_hom.ext AlgHom.ext
--/
 
-#print AlgHom.ext_iff /-
 theorem ext_iff {φ₁ φ₂ : A →ₐ[R] B} : φ₁ = φ₂ ↔ ∀ x, φ₁ x = φ₂ x :=
   FunLike.ext_iff
 #align alg_hom.ext_iff AlgHom.ext_iff
--/
 
-#print AlgHom.mk_coe /-
 @[simp]
 theorem mk_coe {f : A →ₐ[R] B} (h₁ h₂ h₃ h₄ h₅) : (⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
   ext fun _ => rfl
 #align alg_hom.mk_coe AlgHom.mk_coe
--/
 
-#print AlgHom.commutes /-
 @[simp]
 theorem commutes (r : R) : φ (algebraMap R A r) = algebraMap R B r :=
   φ.commutes' r
 #align alg_hom.commutes AlgHom.commutes
--/
 
 theorem comp_algebraMap : (φ : A →+* B).comp (algebraMap R A) = algebraMap R B :=
   RingHom.ext <| φ.commutes
 #align alg_hom.comp_algebra_map AlgHom.comp_algebraMap
 
-#print AlgHom.map_add /-
 protected theorem map_add (r s : A) : φ (r + s) = φ r + φ s :=
   map_add _ _ _
 #align alg_hom.map_add AlgHom.map_add
--/
 
-#print AlgHom.map_zero /-
 protected theorem map_zero : φ 0 = 0 :=
   map_zero _
 #align alg_hom.map_zero AlgHom.map_zero
--/
 
-#print AlgHom.map_mul /-
 protected theorem map_mul (x y) : φ (x * y) = φ x * φ y :=
   map_mul _ _ _
 #align alg_hom.map_mul AlgHom.map_mul
--/
 
-#print AlgHom.map_one /-
 protected theorem map_one : φ 1 = 1 :=
   map_one _
 #align alg_hom.map_one AlgHom.map_one
--/
 
-#print AlgHom.map_pow /-
 protected theorem map_pow (x : A) (n : ℕ) : φ (x ^ n) = φ x ^ n :=
   map_pow _ _ _
 #align alg_hom.map_pow AlgHom.map_pow
--/
 
-#print AlgHom.map_smul /-
 @[simp]
 protected theorem map_smul (r : R) (x : A) : φ (r • x) = r • φ x :=
   map_smul _ _ _
 #align alg_hom.map_smul AlgHom.map_smul
--/
 
 protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∑ x in s, f x) = ∑ x in s, φ (f x) :=
@@ -274,17 +246,13 @@ protected theorem map_finsupp_sum {α : Type _} [Zero α] {ι : Type _} (f : ι
   map_finsupp_sum _ _ _
 #align alg_hom.map_finsupp_sum AlgHom.map_finsupp_sum
 
-#print AlgHom.map_bit0 /-
 protected theorem map_bit0 (x) : φ (bit0 x) = bit0 (φ x) :=
   map_bit0 _ _
 #align alg_hom.map_bit0 AlgHom.map_bit0
--/
 
-#print AlgHom.map_bit1 /-
 protected theorem map_bit1 (x) : φ (bit1 x) = bit1 (φ x) :=
   map_bit1 _ _
 #align alg_hom.map_bit1 AlgHom.map_bit1
--/
 
 /-- If a `ring_hom` is `R`-linear, then it is an `alg_hom`. -/
 def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →ₐ[R] B :=
@@ -309,12 +277,10 @@ protected def id : A →ₐ[R] A :=
 #align alg_hom.id AlgHom.id
 -/
 
-#print AlgHom.coe_id /-
 @[simp]
 theorem coe_id : ⇑(AlgHom.id R A) = id :=
   rfl
 #align alg_hom.coe_id AlgHom.coe_id
--/
 
 @[simp]
 theorem id_toRingHom : (AlgHom.id R A : A →+* A) = RingHom.id _ :=
@@ -323,11 +289,9 @@ theorem id_toRingHom : (AlgHom.id R A : A →+* A) = RingHom.id _ :=
 
 end
 
-#print AlgHom.id_apply /-
 theorem id_apply (p : A) : AlgHom.id R A p = p :=
   rfl
 #align alg_hom.id_apply AlgHom.id_apply
--/
 
 #print AlgHom.comp /-
 /-- Composition of algebra homeomorphisms. -/
@@ -337,18 +301,14 @@ def comp (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) : A →ₐ[R] C :=
 #align alg_hom.comp AlgHom.comp
 -/
 
-#print AlgHom.coe_comp /-
 @[simp]
 theorem coe_comp (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) : ⇑(φ₁.comp φ₂) = φ₁ ∘ φ₂ :=
   rfl
 #align alg_hom.coe_comp AlgHom.coe_comp
--/
 
-#print AlgHom.comp_apply /-
 theorem comp_apply (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) (p : A) : φ₁.comp φ₂ p = φ₁ (φ₂ p) :=
   rfl
 #align alg_hom.comp_apply AlgHom.comp_apply
--/
 
 theorem comp_toRingHom (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) :
     (φ₁.comp φ₂ : A →+* C) = (φ₁ : B →+* C).comp ↑φ₂ :=
@@ -443,11 +403,9 @@ theorem map_smul_of_tower {R'} [SMul R' A] [SMul R' B] [LinearMap.CompatibleSMul
   φ.toLinearMap.map_smul_of_tower r x
 #align alg_hom.map_smul_of_tower AlgHom.map_smul_of_tower
 
-#print AlgHom.map_list_prod /-
 theorem map_list_prod (s : List A) : φ s.Prod = (s.map φ).Prod :=
   φ.toRingHom.map_list_prod s
 #align alg_hom.map_list_prod AlgHom.map_list_prod
--/
 
 #print AlgHom.End /-
 @[simps (config := { attrs := [] }) mul one]
@@ -460,19 +418,15 @@ instance End : Monoid (A →ₐ[R] A) where
 #align alg_hom.End AlgHom.End
 -/
 
-#print AlgHom.one_apply /-
 @[simp]
 theorem one_apply (x : A) : (1 : A →ₐ[R] A) x = x :=
   rfl
 #align alg_hom.one_apply AlgHom.one_apply
--/
 
-#print AlgHom.mul_apply /-
 @[simp]
 theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
   rfl
 #align alg_hom.mul_apply AlgHom.mul_apply
--/
 
 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=
@@ -487,11 +441,9 @@ variable [CommSemiring R] [CommSemiring A] [CommSemiring B]
 
 variable [Algebra R A] [Algebra R B] (φ : A →ₐ[R] B)
 
-#print AlgHom.map_multiset_prod /-
 protected theorem map_multiset_prod (s : Multiset A) : φ s.Prod = (s.map φ).Prod :=
   map_multiset_prod _ _
 #align alg_hom.map_multiset_prod AlgHom.map_multiset_prod
--/
 
 protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∏ x in s, f x) = ∏ x in s, φ (f x) :=
@@ -511,17 +463,13 @@ variable [CommSemiring R] [Ring A] [Ring B]
 
 variable [Algebra R A] [Algebra R B] (φ : A →ₐ[R] B)
 
-#print AlgHom.map_neg /-
 protected theorem map_neg (x) : φ (-x) = -φ x :=
   map_neg _ _
 #align alg_hom.map_neg AlgHom.map_neg
--/
 
-#print AlgHom.map_sub /-
 protected theorem map_sub (x y) : φ (x - y) = φ x - φ y :=
   map_sub _ _ _
 #align alg_hom.map_sub AlgHom.map_sub
--/
 
 end Ring
 
@@ -600,11 +548,9 @@ def ofId : R →ₐ[R] A :=
 
 variable {R}
 
-#print Algebra.ofId_apply /-
 theorem ofId_apply (r) : ofId R A r = algebraMap R A r :=
   rfl
 #align algebra.of_id_apply Algebra.ofId_apply
--/
 
 end Algebra
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -29,7 +29,7 @@ This file defines bundled homomorphisms of `R`-algebras.
 -/
 
 
-open BigOperators
+open scoped BigOperators
 
 universe u v w u₁ v₁
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -100,17 +100,11 @@ instance : CoeFun (A →ₐ[R] B) fun _ => A → B :=
 
 initialize_simps_projections AlgHom (toFun → apply)
 
-/- warning: alg_hom.coe_coe -> AlgHom.coe_coe is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align alg_hom.coe_coe AlgHom.coe_coeₓ'. -/
 @[simp, protected]
 theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=
   rfl
 #align alg_hom.coe_coe AlgHom.coe_coe
 
-/- warning: alg_hom.to_fun_eq_coe -> AlgHom.toFun_eq_coe is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align alg_hom.to_fun_eq_coe AlgHom.toFun_eq_coeₓ'. -/
 @[simp]
 theorem toFun_eq_coe (f : A →ₐ[R] B) : f.toFun = f :=
   rfl
@@ -126,72 +120,39 @@ instance : AlgHomClass (A →ₐ[R] B) R A B
   map_one := map_one'
   commutes f := f.commutes'
 
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 instance coeOutRingHom : Coe (A →ₐ[R] B) (A →+* B) :=
   ⟨AlgHom.toRingHom⟩
 #align alg_hom.coe_ring_hom AlgHom.coeOutRingHom
 
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 instance coeOutMonoidHom : Coe (A →ₐ[R] B) (A →* B) :=
   ⟨fun f => ↑(f : A →+* B)⟩
 #align alg_hom.coe_monoid_hom AlgHom.coeOutMonoidHom
 
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 instance coeOutAddMonoidHom : Coe (A →ₐ[R] B) (A →+ B) :=
   ⟨fun f => ↑(f : A →+* B)⟩
 #align alg_hom.coe_add_monoid_hom AlgHom.coeOutAddMonoidHom
 
-/- warning: alg_hom.coe_mk -> AlgHom.coe_mks is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk AlgHom.coe_mksₓ'. -/
 @[simp, norm_cast]
 theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
   rfl
 #align alg_hom.coe_mk AlgHom.coe_mks
 
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 -- make the coercion the simp-normal form
 @[simp]
 theorem toRingHom_eq_coe (f : A →ₐ[R] B) : f.toRingHom = f :=
   rfl
 #align alg_hom.to_ring_hom_eq_coe AlgHom.toRingHom_eq_coe
 
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 @[simp, norm_cast]
 theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
   rfl
 #align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHom
 
-/- warning: alg_hom.coe_to_monoid_hom -> AlgHom.coe_toMonoidHom is a dubious translation:
-<too large>
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 @[simp, norm_cast]
 theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
   rfl
 #align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHom
 
-/- warning: alg_hom.coe_to_add_monoid_hom -> AlgHom.coe_toAddMonoidHom is a dubious translation:
-<too large>
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 @[simp, norm_cast]
 theorem coe_toAddMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →+ B) = f :=
   rfl
@@ -211,26 +172,14 @@ theorem coe_fn_inj {φ₁ φ₂ : A →ₐ[R] B} : (φ₁ : A → B) = φ₂ ↔
 #align alg_hom.coe_fn_inj AlgHom.coe_fn_inj
 -/
 
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 theorem coe_ringHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →+* B) := fun φ₁ φ₂ H =>
   coe_fn_injective <| show ((φ₁ : A →+* B) : A → B) = ((φ₂ : A →+* B) : A → B) from congr_arg _ H
 #align alg_hom.coe_ring_hom_injective AlgHom.coe_ringHom_injective
 
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 theorem coe_monoidHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →* B) :=
   RingHom.coe_monoidHom_injective.comp coe_ringHom_injective
 #align alg_hom.coe_monoid_hom_injective AlgHom.coe_monoidHom_injective
 
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 theorem coe_addMonoidHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →+ B) :=
   RingHom.coe_addMonoidHom_injective.comp coe_ringHom_injective
 #align alg_hom.coe_add_monoid_hom_injective AlgHom.coe_addMonoidHom_injective
@@ -274,9 +223,6 @@ theorem commutes (r : R) : φ (algebraMap R A r) = algebraMap R B r :=
 #align alg_hom.commutes AlgHom.commutes
 -/
 
-/- warning: alg_hom.comp_algebra_map -> AlgHom.comp_algebraMap is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align alg_hom.comp_algebra_map AlgHom.comp_algebraMapₓ'. -/
 theorem comp_algebraMap : (φ : A →+* B).comp (algebraMap R A) = algebraMap R B :=
   RingHom.ext <| φ.commutes
 #align alg_hom.comp_algebra_map AlgHom.comp_algebraMap
@@ -318,17 +264,11 @@ protected theorem map_smul (r : R) (x : A) : φ (r • x) = r • φ x :=
 #align alg_hom.map_smul AlgHom.map_smul
 -/
 
-/- warning: alg_hom.map_sum -> AlgHom.map_sum is a dubious translation:
-<too large>
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 protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∑ x in s, f x) = ∑ x in s, φ (f x) :=
   map_sum _ _ _
 #align alg_hom.map_sum AlgHom.map_sum
 
-/- warning: alg_hom.map_finsupp_sum -> AlgHom.map_finsupp_sum is a dubious translation:
-<too large>
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 protected theorem map_finsupp_sum {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Sum g) = f.Sum fun i a => φ (g i a) :=
   map_finsupp_sum _ _ _
@@ -346,12 +286,6 @@ protected theorem map_bit1 (x) : φ (bit1 x) = bit1 (φ x) :=
 #align alg_hom.map_bit1 AlgHom.map_bit1
 -/
 
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 /-- If a `ring_hom` is `R`-linear, then it is an `alg_hom`. -/
 def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →ₐ[R] B :=
   { f with
@@ -359,9 +293,6 @@ def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →
     commutes' := fun c => by simp only [Algebra.algebraMap_eq_smul_one, h, f.map_one] }
 #align alg_hom.mk' AlgHom.mk'
 
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 @[simp]
 theorem coe_mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : ⇑(mk' f h) = f :=
   rfl
@@ -385,12 +316,6 @@ theorem coe_id : ⇑(AlgHom.id R A) = id :=
 #align alg_hom.coe_id AlgHom.coe_id
 -/
 
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 @[simp]
 theorem id_toRingHom : (AlgHom.id R A : A →+* A) = RingHom.id _ :=
   rfl
@@ -425,9 +350,6 @@ theorem comp_apply (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) (p : A) : φ
 #align alg_hom.comp_apply AlgHom.comp_apply
 -/
 
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 theorem comp_toRingHom (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) :
     (φ₁.comp φ₂ : A →+* C) = (φ₁ : B →+* C).comp ↑φ₂ :=
   rfl
@@ -463,9 +385,6 @@ def toLinearMap : A →ₗ[R] B where
 #align alg_hom.to_linear_map AlgHom.toLinearMap
 -/
 
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 @[simp]
 theorem toLinearMap_apply (p : A) : φ.toLinearMap p = φ p :=
   rfl
@@ -492,9 +411,6 @@ theorem toLinearMap_id : toLinearMap (AlgHom.id R A) = LinearMap.id :=
 #align alg_hom.to_linear_map_id AlgHom.toLinearMap_id
 -/
 
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 /-- Promote a `linear_map` to an `alg_hom` by supplying proofs about the behavior on `1` and `*`. -/
 @[simps]
 def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x * y) = f x * f y) :
@@ -506,34 +422,22 @@ def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x
     commutes' := fun c => by simp only [Algebra.algebraMap_eq_smul_one, f.map_smul, map_one] }
 #align alg_hom.of_linear_map AlgHom.ofLinearMap
 
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 @[simp]
 theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
     ofLinearMap φ.toLinearMap map_one map_mul = φ := by ext; rfl
 #align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMap
 
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 @[simp]
 theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
     toLinearMap (ofLinearMap f map_one map_mul) = f := by ext; rfl
 #align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMap
 
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 @[simp]
 theorem ofLinearMap_id (map_one) (map_mul) :
     ofLinearMap LinearMap.id map_one map_mul = AlgHom.id R A :=
   ext fun _ => rfl
 #align alg_hom.of_linear_map_id AlgHom.ofLinearMap_id
 
-/- warning: alg_hom.map_smul_of_tower -> AlgHom.map_smul_of_tower is a dubious translation:
-<too large>
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 theorem map_smul_of_tower {R'} [SMul R' A] [SMul R' B] [LinearMap.CompatibleSMul A B R' R] (r : R')
     (x : A) : φ (r • x) = r • φ x :=
   φ.toLinearMap.map_smul_of_tower r x
@@ -570,9 +474,6 @@ theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
 #align alg_hom.mul_apply AlgHom.mul_apply
 -/
 
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 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=
   h ▸ (f.commutes _).symm
@@ -592,17 +493,11 @@ protected theorem map_multiset_prod (s : Multiset A) : φ s.Prod = (s.map φ).Pr
 #align alg_hom.map_multiset_prod AlgHom.map_multiset_prod
 -/
 
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 protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∏ x in s, f x) = ∏ x in s, φ (f x) :=
   map_prod _ _ _
 #align alg_hom.map_prod AlgHom.map_prod
 
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 protected theorem map_finsupp_prod {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Prod g) = f.Prod fun i a => φ (g i a) :=
   map_finsupp_prod _ _ _
@@ -645,12 +540,6 @@ def toNatAlgHom [Semiring R] [Semiring S] (f : R →+* S) : R →ₐ[ℕ] S :=
 #align ring_hom.to_nat_alg_hom RingHom.toNatAlgHom
 -/
 
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-Case conversion may be inaccurate. Consider using '#align ring_hom.to_int_alg_hom RingHom.toIntAlgHomₓ'. -/
 /-- Reinterpret a `ring_hom` as a `ℤ`-algebra homomorphism. -/
 def toIntAlgHom [Ring R] [Ring S] [Algebra ℤ R] [Algebra ℤ S] (f : R →+* S) : R →ₐ[ℤ] S :=
   { f with commutes' := fun n => by simp }
@@ -664,9 +553,6 @@ def toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →+* S
 #align ring_hom.to_rat_alg_hom RingHom.toRatAlgHom
 -/
 
-/- warning: ring_hom.to_rat_alg_hom_to_ring_hom -> RingHom.toRatAlgHom_toRingHom is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align ring_hom.to_rat_alg_hom_to_ring_hom RingHom.toRatAlgHom_toRingHomₓ'. -/
 @[simp]
 theorem toRatAlgHom_toRingHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →+* S) :
     ↑f.toRatAlgHom = f :=
@@ -679,9 +565,6 @@ section
 
 variable {R S : Type _}
 
-/- warning: alg_hom.to_ring_hom_to_rat_alg_hom -> AlgHom.toRingHom_toRatAlgHom is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align alg_hom.to_ring_hom_to_rat_alg_hom AlgHom.toRingHom_toRatAlgHomₓ'. -/
 @[simp]
 theorem AlgHom.toRingHom_toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →ₐ[ℚ] S) :
     (f : R →+* S).toRatAlgHom = f :=
@@ -731,12 +614,6 @@ variable {M G : Type _} (R A : Type _) [CommSemiring R] [Semiring A] [Algebra R
 
 variable [Monoid M] [MulSemiringAction M A] [SMulCommClass M R A]
 
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-Case conversion may be inaccurate. Consider using '#align mul_semiring_action.to_alg_hom MulSemiringAction.toAlgHomₓ'. -/
 /-- Each element of the monoid defines a algebra homomorphism.
 
 This is a stronger version of `mul_semiring_action.to_ring_hom` and
@@ -750,12 +627,6 @@ def toAlgHom (m : M) : A →ₐ[R] A :=
     commutes' := smul_algebraMap _ }
 #align mul_semiring_action.to_alg_hom MulSemiringAction.toAlgHom
 
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-Case conversion may be inaccurate. Consider using '#align mul_semiring_action.to_alg_hom_injective MulSemiringAction.toAlgHom_injectiveₓ'. -/
 theorem toAlgHom_injective [FaithfulSMul M A] :
     Function.Injective (MulSemiringAction.toAlgHom R A : M → A →ₐ[R] A) := fun m₁ m₂ h =>
   eq_of_smul_eq_smul fun r => AlgHom.ext_iff.1 h r

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -119,10 +119,7 @@ theorem toFun_eq_coe (f : A →ₐ[R] B) : f.toFun = f :=
 instance : AlgHomClass (A →ₐ[R] B) R A B
     where
   coe := toFun
-  coe_injective' f g h := by
-    cases f
-    cases g
-    congr
+  coe_injective' f g h := by cases f; cases g; congr
   map_add := map_add'
   map_zero := map_zero'
   map_mul := map_mul'
@@ -514,10 +511,7 @@ def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMapₓ'. -/
 @[simp]
 theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
-    ofLinearMap φ.toLinearMap map_one map_mul = φ :=
-  by
-  ext
-  rfl
+    ofLinearMap φ.toLinearMap map_one map_mul = φ := by ext; rfl
 #align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMap
 
 /- warning: alg_hom.to_linear_map_of_linear_map -> AlgHom.toLinearMap_ofLinearMap is a dubious translation:
@@ -525,10 +519,7 @@ theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMapₓ'. -/
 @[simp]
 theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
-    toLinearMap (ofLinearMap f map_one map_mul) = f :=
-  by
-  ext
-  rfl
+    toLinearMap (ofLinearMap f map_one map_mul) = f := by ext; rfl
 #align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMap
 
 /- warning: alg_hom.of_linear_map_id -> AlgHom.ofLinearMap_id is a dubious translation:

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

@@ -101,10 +101,7 @@ instance : CoeFun (A →ₐ[R] B) fun _ => A → B :=
 initialize_simps_projections AlgHom (toFun → apply)
 
 /- warning: alg_hom.coe_coe -> AlgHom.coe_coe is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_coe AlgHom.coe_coeₓ'. -/
 @[simp, protected]
 theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=
@@ -112,10 +109,7 @@ theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R]
 #align alg_hom.coe_coe AlgHom.coe_coe
 
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 Case conversion may be inaccurate. Consider using '#align alg_hom.to_fun_eq_coe AlgHom.toFun_eq_coeₓ'. -/
 @[simp]
 theorem toFun_eq_coe (f : A →ₐ[R] B) : f.toFun = f :=
@@ -166,10 +160,7 @@ instance coeOutAddMonoidHom : Coe (A →ₐ[R] B) (A →+ B) :=
 #align alg_hom.coe_add_monoid_hom AlgHom.coeOutAddMonoidHom
 
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(MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B 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_inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk AlgHom.coe_mksₓ'. -/
 @[simp, norm_cast]
 theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
@@ -177,10 +168,7 @@ theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂,
 #align alg_hom.coe_mk AlgHom.coe_mks
 
 /- warning: alg_hom.to_ring_hom_eq_coe -> AlgHom.toRingHom_eq_coe is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.to_ring_hom_eq_coe AlgHom.toRingHom_eq_coeₓ'. -/
 -- make the coercion the simp-normal form
 @[simp]
@@ -189,10 +177,7 @@ theorem toRingHom_eq_coe (f : A →ₐ[R] B) : f.toRingHom = f :=
 #align alg_hom.to_ring_hom_eq_coe AlgHom.toRingHom_eq_coe
 
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 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
@@ -200,10 +185,7 @@ theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
 #align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHom
 
 /- warning: alg_hom.coe_to_monoid_hom -> AlgHom.coe_toMonoidHom is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
@@ -211,10 +193,7 @@ theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
 #align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHom
 
 /- warning: alg_hom.coe_to_add_monoid_hom -> AlgHom.coe_toAddMonoidHom is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_add_monoid_hom AlgHom.coe_toAddMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toAddMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →+ B) = f :=
@@ -236,20 +215,14 @@ theorem coe_fn_inj {φ₁ φ₂ : A →ₐ[R] B} : (φ₁ : A → B) = φ₂ ↔
 -/
 
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 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_ring_hom_injective AlgHom.coe_ringHom_injectiveₓ'. -/
 theorem coe_ringHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →+* B) := fun φ₁ φ₂ H =>
   coe_fn_injective <| show ((φ₁ : A →+* B) : A → B) = ((φ₂ : A →+* B) : A → B) from congr_arg _ H
 #align alg_hom.coe_ring_hom_injective AlgHom.coe_ringHom_injective
 
 /- warning: alg_hom.coe_monoid_hom_injective -> AlgHom.coe_monoidHom_injective is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_monoid_hom_injective AlgHom.coe_monoidHom_injectiveₓ'. -/
 theorem coe_monoidHom_injective : Function.Injective (coe : (A →ₐ[R] B) → A →* B) :=
   RingHom.coe_monoidHom_injective.comp coe_ringHom_injective
@@ -305,10 +278,7 @@ theorem commutes (r : R) : φ (algebraMap R A r) = algebraMap R B r :=
 -/
 
 /- warning: alg_hom.comp_algebra_map -> AlgHom.comp_algebraMap is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.comp_algebra_map AlgHom.comp_algebraMapₓ'. -/
 theorem comp_algebraMap : (φ : A →+* B).comp (algebraMap R A) = algebraMap R B :=
   RingHom.ext <| φ.commutes
@@ -352,10 +322,7 @@ protected theorem map_smul (r : R) (x : A) : φ (r • x) = r • φ x :=
 -/
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_sum AlgHom.map_sumₓ'. -/
 protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∑ x in s, f x) = ∑ x in s, φ (f x) :=
@@ -363,10 +330,7 @@ protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
 #align alg_hom.map_sum AlgHom.map_sum
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_finsupp_sum AlgHom.map_finsupp_sumₓ'. -/
 protected theorem map_finsupp_sum {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Sum g) = f.Sum fun i a => φ (g i a) :=
@@ -399,10 +363,7 @@ def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →
 #align alg_hom.mk' AlgHom.mk'
 
 /- warning: alg_hom.coe_mk' -> AlgHom.coe_mk' is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk' AlgHom.coe_mk'ₓ'. -/
 @[simp]
 theorem coe_mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : ⇑(mk' f h) = f :=
@@ -468,10 +429,7 @@ theorem comp_apply (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) (p : A) : φ
 -/
 
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 Case conversion may be inaccurate. Consider using '#align alg_hom.comp_to_ring_hom AlgHom.comp_toRingHomₓ'. -/
 theorem comp_toRingHom (φ₁ : B →ₐ[R] C) (φ₂ : A →ₐ[R] B) :
     (φ₁.comp φ₂ : A →+* C) = (φ₁ : B →+* C).comp ↑φ₂ :=
@@ -509,10 +467,7 @@ def toLinearMap : A →ₗ[R] B where
 -/
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_apply AlgHom.toLinearMap_applyₓ'. -/
 @[simp]
 theorem toLinearMap_apply (p : A) : φ.toLinearMap p = φ p :=
@@ -541,10 +496,7 @@ theorem toLinearMap_id : toLinearMap (AlgHom.id R A) = LinearMap.id :=
 -/
 
 /- warning: alg_hom.of_linear_map -> AlgHom.ofLinearMap is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map AlgHom.ofLinearMapₓ'. -/
 /-- Promote a `linear_map` to an `alg_hom` by supplying proofs about the behavior on `1` and `*`. -/
 @[simps]
@@ -558,10 +510,7 @@ def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x
 #align alg_hom.of_linear_map AlgHom.ofLinearMap
 
 /- warning: alg_hom.of_linear_map_to_linear_map -> AlgHom.ofLinearMap_toLinearMap is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMapₓ'. -/
 @[simp]
 theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
@@ -572,10 +521,7 @@ theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
 #align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMap
 
 /- warning: alg_hom.to_linear_map_of_linear_map -> AlgHom.toLinearMap_ofLinearMap is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMapₓ'. -/
 @[simp]
 theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
@@ -586,10 +532,7 @@ theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
 #align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMap
 
 /- warning: alg_hom.of_linear_map_id -> AlgHom.ofLinearMap_id is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_id AlgHom.ofLinearMap_idₓ'. -/
 @[simp]
 theorem ofLinearMap_id (map_one) (map_mul) :
@@ -598,10 +541,7 @@ theorem ofLinearMap_id (map_one) (map_mul) :
 #align alg_hom.of_linear_map_id AlgHom.ofLinearMap_id
 
 /- warning: alg_hom.map_smul_of_tower -> AlgHom.map_smul_of_tower is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_smul_of_tower AlgHom.map_smul_of_towerₓ'. -/
 theorem map_smul_of_tower {R'} [SMul R' A] [SMul R' B] [LinearMap.CompatibleSMul A B R' R] (r : R')
     (x : A) : φ (r • x) = r • φ x :=
@@ -640,10 +580,7 @@ theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
 -/
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.algebra_map_eq_apply AlgHom.algebraMap_eq_applyₓ'. -/
 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=
@@ -665,10 +602,7 @@ protected theorem map_multiset_prod (s : Multiset A) : φ s.Prod = (s.map φ).Pr
 -/
 
 /- warning: alg_hom.map_prod -> AlgHom.map_prod is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_prod AlgHom.map_prodₓ'. -/
 protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∏ x in s, f x) = ∏ x in s, φ (f x) :=
@@ -676,10 +610,7 @@ protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
 #align alg_hom.map_prod AlgHom.map_prod
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_finsupp_prod AlgHom.map_finsupp_prodₓ'. -/
 protected theorem map_finsupp_prod {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Prod g) = f.Prod fun i a => φ (g i a) :=
@@ -743,10 +674,7 @@ def toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →+* S
 -/
 
 /- warning: ring_hom.to_rat_alg_hom_to_ring_hom -> RingHom.toRatAlgHom_toRingHom is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align ring_hom.to_rat_alg_hom_to_ring_hom RingHom.toRatAlgHom_toRingHomₓ'. -/
 @[simp]
 theorem toRatAlgHom_toRingHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →+* S) :
@@ -761,10 +689,7 @@ section
 variable {R S : Type _}
 
 /- warning: alg_hom.to_ring_hom_to_rat_alg_hom -> AlgHom.toRingHom_toRatAlgHom is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align alg_hom.to_ring_hom_to_rat_alg_hom AlgHom.toRingHom_toRatAlgHomₓ'. -/
 @[simp]
 theorem AlgHom.toRingHom_toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →ₐ[ℚ] S) :

mathlib commit https://github.com/leanprover-community/mathlib/commit/8d33f09cd7089ecf074b4791907588245aec5d1b

@@ -104,7 +104,7 @@ initialize_simps_projections AlgHom (toFun → apply)
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {F : Type.{u4}} [_inst_10 : AlgHomClass.{u4, u1, u2, u3} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7] (f : F), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) ((fun (a : Type.{u4}) (b : Sort.{max (succ u2) (succ u3)}) [self : HasLiftT.{succ u4, max (succ u2) (succ u3)} a b] => self.0) F (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (HasLiftT.mk.{succ u4, max (succ u2) (succ u3)} F (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) 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(CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10))))) f)
 but is expected to have type
-  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] {F : Type.{u1}} [_inst_10 : AlgHomClass.{u1, u2, u3, u4} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7] (f : F), Eq.{max (succ u3) (succ u4)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHomClass.toAlgHom.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10 f)) (FunLike.coe.{succ u1, succ u3, succ u4} F A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{u1, u2, u3, u4} F R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{u1, u2, u3, u4} F R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, u1} R A B F (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10)))) f)
+  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] {F : Type.{u1}} [_inst_10 : AlgHomClass.{u1, u2, u3, u4} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7] (f : F), Eq.{max (succ u3) (succ u4)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) ᾰ) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHomClass.toAlgHom.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10 f)) (FunLike.coe.{succ u1, succ u3, succ u4} F A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{u1, u2, u3, u4} F R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{u1, u2, u3, u4} F R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, u1} R A B F (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10)))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_coe AlgHom.coe_coeₓ'. -/
 @[simp, protected]
 theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=
@@ -115,7 +115,7 @@ theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R]
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (AlgHom.toFun.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHom.toRingHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHom.toRingHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_fun_eq_coe AlgHom.toFun_eq_coeₓ'. -/
 @[simp]
 theorem toFun_eq_coe (f : A →ₐ[R] B) : f.toFun = f :=
@@ -169,7 +169,7 @@ instance coeOutAddMonoidHom : Coe (A →ₐ[R] B) (A →+ B) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (MulOneClass.toHasOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (MulOneClass.toHasOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toHasMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toHasMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (f x) (f y))) (h₃ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 0 (OfNat.mk.{u2} A 0 (Zero.zero.{u2} A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))))) (OfNat.ofNat.{u3} B 0 (OfNat.mk.{u3} B 0 (Zero.zero.{u3} B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (f (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toHasAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toHasAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (f x) (f y))) (h₅ : forall (r : R), Eq.{succ u3} B (f (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h₁ h₂ h₃ h₄ h₅)) f
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk AlgHom.coe_mksₓ'. -/
 @[simp, norm_cast]
 theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
@@ -192,7 +192,7 @@ theorem toRingHom_eq_coe (f : A →ₐ[R] B) : f.toRingHom = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u2) (succ u3)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u2) (succ u3)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHom.hasCoeT.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
@@ -203,7 +203,7 @@ theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u3) (succ u2), max (succ u2) (succ u3)} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (fun (_x : MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) => A -> B) (MonoidHom.hasCoeToFun.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u3) (succ u2)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u3) (succ u2)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.hasCoeT.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
@@ -214,7 +214,7 @@ theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u3) (succ u2), max (succ u2) (succ u3)} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (fun (_x : AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) => A -> B) (AddMonoidHom.hasCoeToFun.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u3) (succ u2)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u3) (succ u2)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (AddMonoidHom.hasCoeT.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (SemilinearMapClass.addMonoidHomClass.{u1, u1, u2, u3, max u2 u3} R R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.403 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.403 : A) => B) _x) (AddHomClass.toFunLike.{max u2 u3, u2, u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A B (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (AddMonoidHomClass.toAddHomClass.{max u2 u3, u2, u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (AddMonoidHom.addMonoidHomClass.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (AddMonoidHomClass.toAddMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulActionHomClass.toAddMonoidHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.403 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.403 : A) => B) _x) (AddHomClass.toFunLike.{max u2 u3, u2, u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A B (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (AddMonoidHomClass.toAddHomClass.{max u2 u3, u2, u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (AddMonoidHom.addMonoidHomClass.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (AddMonoidHomClass.toAddMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulActionHomClass.toAddMonoidHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_add_monoid_hom AlgHom.coe_toAddMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toAddMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →+ B) = f :=
@@ -355,7 +355,7 @@ protected theorem map_smul (r : R) (x : A) : φ (r • x) = r • φ x :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {ι : Type.{u4}} (f : ι -> A) (s : Finset.{u4} ι), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ (Finset.sum.{u2, u4} A ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) s (fun (x : ι) => f x))) (Finset.sum.{u3, u4} B ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) s (fun (x : ι) => coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ (f x)))
 but is expected to have type
-  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] (φ : AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {ι : Type.{u1}} (f : ι -> A) (s : Finset.{u1} ι), Eq.{succ u4} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) (Finset.sum.{u3, u1} A ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) s (fun (x : ι) => f x))) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (Finset.sum.{u3, u1} A ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) s (fun (x : ι) => f x))) (Finset.sum.{u4, u1} B ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) s (fun (x : ι) => FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (f x)))
+  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] (φ : AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {ι : Type.{u1}} (f : ι -> A) (s : Finset.{u1} ι), Eq.{succ u4} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) (Finset.sum.{u3, u1} A ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) s (fun (x : ι) => f x))) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (Finset.sum.{u3, u1} A ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) s (fun (x : ι) => f x))) (Finset.sum.{u4, u1} B ι (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) s (fun (x : ι) => FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (f x)))
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_sum AlgHom.map_sumₓ'. -/
 protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∑ x in s, f x) = ∑ x in s, φ (f x) :=
@@ -366,7 +366,7 @@ protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {α : Type.{u4}} [_inst_10 : Zero.{u4} α] {ι : Type.{u5}} (f : Finsupp.{u5, u4} ι α _inst_10) (g : ι -> α -> A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ (Finsupp.sum.{u5, u4, u2} ι α A _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) f g)) (Finsupp.sum.{u5, u4, u3} ι α B _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) f (fun (i : ι) (a : α) => coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ (g i a)))
 but is expected to have type
-  forall {R : Type.{u3}} {A : Type.{u4}} {B : Type.{u5}} [_inst_1 : CommSemiring.{u3} R] [_inst_2 : Semiring.{u4} A] [_inst_3 : Semiring.{u5} B] [_inst_6 : Algebra.{u3, u4} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u3, u5} R B _inst_1 _inst_3] (φ : AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {α : Type.{u2}} [_inst_10 : Zero.{u2} α] {ι : Type.{u1}} (f : Finsupp.{u1, u2} ι α _inst_10) (g : ι -> α -> A), Eq.{succ u5} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) (Finsupp.sum.{u1, u2, u4} ι α A _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) f g)) (FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (Finsupp.sum.{u1, u2, u4} ι α A _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) f g)) (Finsupp.sum.{u1, u2, u5} ι α B _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) f (fun (i : ι) (a : α) => FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (g i a)))
+  forall {R : Type.{u3}} {A : Type.{u4}} {B : Type.{u5}} [_inst_1 : CommSemiring.{u3} R] [_inst_2 : Semiring.{u4} A] [_inst_3 : Semiring.{u5} B] [_inst_6 : Algebra.{u3, u4} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u3, u5} R B _inst_1 _inst_3] (φ : AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {α : Type.{u2}} [_inst_10 : Zero.{u2} α] {ι : Type.{u1}} (f : Finsupp.{u1, u2} ι α _inst_10) (g : ι -> α -> A), Eq.{succ u5} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) (Finsupp.sum.{u1, u2, u4} ι α A _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) f g)) (FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (Finsupp.sum.{u1, u2, u4} ι α A _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) f g)) (Finsupp.sum.{u1, u2, u5} ι α B _inst_10 (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) f (fun (i : ι) (a : α) => FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3)))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B _inst_3))) (Algebra.toModule.{u3, u4} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u3, u5} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (g i a)))
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_finsupp_sum AlgHom.map_finsupp_sumₓ'. -/
 protected theorem map_finsupp_sum {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Sum g) = f.Sum fun i a => φ (g i a) :=
@@ -402,7 +402,7 @@ def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f (SMul.smul.{u1, u2} R A (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (SMulWithZero.toSmulZeroClass.{u1, u2} R A (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (MulActionWithZero.toSMulWithZero.{u1, u2} R A (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (Module.toMulActionWithZero.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) c x)) (SMul.smul.{u1, u3} R B (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (SMulWithZero.toSmulZeroClass.{u1, u3} R B (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MulActionWithZero.toSMulWithZero.{u1, u3} R B (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (Module.toMulActionWithZero.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) c (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x 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(Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f)
 but is expected to have type
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(NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk' AlgHom.coe_mk'ₓ'. -/
 @[simp]
 theorem coe_mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : ⇑(mk' f h) = f :=
@@ -512,7 +512,7 @@ def toLinearMap : A →ₗ[R] B where
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (fun (_x : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ p)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ p)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ p)
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_apply AlgHom.toLinearMap_applyₓ'. -/
 @[simp]
 theorem toLinearMap_apply (p : A) : φ.toLinearMap p = φ p :=
@@ -544,7 +544,7 @@ theorem toLinearMap_id : toLinearMap (AlgHom.id R A) = LinearMap.id :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)), (Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (fun (_x : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A 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 but is expected to have type
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A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)), (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) -> (forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map AlgHom.ofLinearMapₓ'. -/
 /-- Promote a `linear_map` to an `alg_hom` by supplying proofs about the behavior on `1` and `*`. -/
 @[simps]
@@ -561,7 +561,7 @@ def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (map_one : Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (AddMonoidWithOne.toOne.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), 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(Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B 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 but is expected to have type
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(Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) y))), Eq.{max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) map_one map_mul) φ
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (map_one : Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B 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_inst_2 _inst_3 _inst_6 _inst_7 φ) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) y))), Eq.{max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) map_one map_mul) φ
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMapₓ'. -/
 @[simp]
 theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
@@ -575,7 +575,7 @@ theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (map_one : Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (AddMonoidWithOne.toOne.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
 but is expected to have type
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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, 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(Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (map_one : Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMapₓ'. -/
 @[simp]
 theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
@@ -589,7 +589,7 @@ theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} A (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} A (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_2)))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u2, u2, u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (instHMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (NonUnitalNonAssocSemiring.toMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (Semiring.toNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
+  forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_2)))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u2, u2, u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) x) (instHMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) x) (NonUnitalNonAssocSemiring.toMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) x) (Semiring.toNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) x) _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_id AlgHom.ofLinearMap_idₓ'. -/
 @[simp]
 theorem ofLinearMap_id (map_one) (map_mul) :
@@ -601,7 +601,7 @@ theorem ofLinearMap_id (map_one) (map_mul) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {R' : Type.{u4}} [_inst_10 : SMul.{u4, u2} R' A] [_inst_11 : SMul.{u4, u3} R' B] [_inst_12 : LinearMap.CompatibleSMul.{u2, u3, u4, u1} A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) R' R (CommSemiring.toSemiring.{u1} R _inst_1) _inst_10 (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) _inst_11 (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)] (r : R') (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ (SMul.smul.{u4, u2} R' A _inst_10 r x)) (SMul.smul.{u4, u3} R' B _inst_11 r (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ x))
 but is expected to have type
-  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] (φ : AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {R' : Type.{u1}} [_inst_10 : SMul.{u1, u3} R' A] [_inst_11 : SMul.{u1, u4} R' B] [_inst_12 : LinearMap.CompatibleSMul.{u3, u4, u1, u2} A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) R' R (CommSemiring.toSemiring.{u2} R _inst_1) _inst_10 (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) _inst_11 (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)] (r : R') (x : A), Eq.{succ u4} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) (HSMul.hSMul.{u1, u3, u3} R' A A (instHSMul.{u1, u3} R' A _inst_10) r x)) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (HSMul.hSMul.{u1, u3, u3} R' A A (instHSMul.{u1, u3} R' A _inst_10) r x)) (HSMul.hSMul.{u1, u4, u4} R' ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) x) (instHSMul.{u1, u4} R' ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) x) _inst_11) r (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ x))
+  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] (φ : AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {R' : Type.{u1}} [_inst_10 : SMul.{u1, u3} R' A] [_inst_11 : SMul.{u1, u4} R' B] [_inst_12 : LinearMap.CompatibleSMul.{u3, u4, u1, u2} A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) R' R (CommSemiring.toSemiring.{u2} R _inst_1) _inst_10 (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) _inst_11 (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)] (r : R') (x : A), Eq.{succ u4} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) (HSMul.hSMul.{u1, u3, u3} R' A A (instHSMul.{u1, u3} R' A _inst_10) r x)) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ (HSMul.hSMul.{u1, u3, u3} R' A A (instHSMul.{u1, u3} R' A _inst_10) r x)) (HSMul.hSMul.{u1, u4, u4} R' ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) x) (instHSMul.{u1, u4} R' ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) x) _inst_11) r (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ x))
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_smul_of_tower AlgHom.map_smul_of_towerₓ'. -/
 theorem map_smul_of_tower {R'} [SMul R' A] [SMul R' B] [LinearMap.CompatibleSMul A B R' R] (r : R')
     (x : A) : φ (r • x) = r • φ x :=
@@ -643,7 +643,7 @@ theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} A (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} B (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f x))
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
 Case conversion may be inaccurate. Consider using '#align alg_hom.algebra_map_eq_apply AlgHom.algebraMap_eq_applyₓ'. -/
 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=
@@ -668,7 +668,7 @@ protected theorem map_multiset_prod (s : Multiset A) : φ s.Prod = (s.map φ).Pr
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : CommSemiring.{u2} A] [_inst_3 : CommSemiring.{u3} B] [_inst_4 : Algebra.{u1, u2} R A _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2)] [_inst_5 : Algebra.{u1, u3} R B _inst_1 (CommSemiring.toSemiring.{u3} B _inst_3)] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) {ι : Type.{u4}} (f : ι -> A) (s : Finset.{u4} ι), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) φ (Finset.prod.{u2, u4} A ι (CommSemiring.toCommMonoid.{u2} A _inst_2) s (fun (x : ι) => f x))) (Finset.prod.{u3, u4} B ι (CommSemiring.toCommMonoid.{u3} B _inst_3) s (fun (x : ι) => coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) φ (f x)))
 but is expected to have type
-  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : CommSemiring.{u3} A] [_inst_3 : CommSemiring.{u4} B] [_inst_4 : Algebra.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2)] [_inst_5 : Algebra.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3)] (φ : AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) {ι : Type.{u1}} (f : ι -> A) (s : Finset.{u1} ι), Eq.{succ u4} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) (Finset.prod.{u3, u1} A ι (CommSemiring.toCommMonoid.{u3} A _inst_2) s (fun (x : ι) => f x))) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5 (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5))))) φ (Finset.prod.{u3, u1} A ι (CommSemiring.toCommMonoid.{u3} A _inst_2) s (fun (x : ι) => f x))) (Finset.prod.{u4, u1} B ι (CommSemiring.toCommMonoid.{u4} B _inst_3) s (fun (x : ι) => FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5 (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5))))) φ (f x)))
+  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : CommSemiring.{u3} A] [_inst_3 : CommSemiring.{u4} B] [_inst_4 : Algebra.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2)] [_inst_5 : Algebra.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3)] (φ : AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) {ι : Type.{u1}} (f : ι -> A) (s : Finset.{u1} ι), Eq.{succ u4} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) (Finset.prod.{u3, u1} A ι (CommSemiring.toCommMonoid.{u3} A _inst_2) s (fun (x : ι) => f x))) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5 (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5))))) φ (Finset.prod.{u3, u1} A ι (CommSemiring.toCommMonoid.{u3} A _inst_2) s (fun (x : ι) => f x))) (Finset.prod.{u4, u1} B ι (CommSemiring.toCommMonoid.{u4} B _inst_3) s (fun (x : ι) => FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3))))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A (CommSemiring.toSemiring.{u3} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B (CommSemiring.toSemiring.{u4} B _inst_3)))) (Algebra.toModule.{u2, u3} R A _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) _inst_4) (Algebra.toModule.{u2, u4} R B _inst_1 (CommSemiring.toSemiring.{u4} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5 (AlgHom.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 (CommSemiring.toSemiring.{u3} A _inst_2) (CommSemiring.toSemiring.{u4} B _inst_3) _inst_4 _inst_5))))) φ (f x)))
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_prod AlgHom.map_prodₓ'. -/
 protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
     φ (∏ x in s, f x) = ∏ x in s, φ (f x) :=
@@ -679,7 +679,7 @@ protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : CommSemiring.{u2} A] [_inst_3 : CommSemiring.{u3} B] [_inst_4 : Algebra.{u1, u2} R A _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2)] [_inst_5 : Algebra.{u1, u3} R B _inst_1 (CommSemiring.toSemiring.{u3} B _inst_3)] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) {α : Type.{u4}} [_inst_6 : Zero.{u4} α] {ι : Type.{u5}} (f : Finsupp.{u5, u4} ι α _inst_6) (g : ι -> α -> A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) φ (Finsupp.prod.{u5, u4, u2} ι α A _inst_6 (CommSemiring.toCommMonoid.{u2} A _inst_2) f g)) (Finsupp.prod.{u5, u4, u3} ι α B _inst_6 (CommSemiring.toCommMonoid.{u3} B _inst_3) f (fun (i : ι) (a : α) => coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 (CommSemiring.toSemiring.{u2} A _inst_2) (CommSemiring.toSemiring.{u3} B _inst_3) _inst_4 _inst_5) φ (g i a)))
 but is expected to have type
-  forall {R : Type.{u3}} {A : Type.{u4}} {B : Type.{u5}} [_inst_1 : CommSemiring.{u3} R] [_inst_2 : CommSemiring.{u4} A] [_inst_3 : CommSemiring.{u5} B] [_inst_4 : Algebra.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2)] [_inst_5 : Algebra.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3)] (φ : AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) {α : Type.{u2}} [_inst_6 : Zero.{u2} α] {ι : Type.{u1}} (f : Finsupp.{u1, u2} ι α _inst_6) (g : ι -> α -> A), Eq.{succ u5} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) (Finsupp.prod.{u1, u2, u4} ι α A _inst_6 (CommSemiring.toCommMonoid.{u4} A _inst_2) f g)) (FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5 (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5))))) φ (Finsupp.prod.{u1, u2, u4} ι α A _inst_6 (CommSemiring.toCommMonoid.{u4} A _inst_2) f g)) (Finsupp.prod.{u1, u2, u5} ι α B _inst_6 (CommSemiring.toCommMonoid.{u5} B _inst_3) f (fun (i : ι) (a : α) => FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5 (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5))))) φ (g i a)))
+  forall {R : Type.{u3}} {A : Type.{u4}} {B : Type.{u5}} [_inst_1 : CommSemiring.{u3} R] [_inst_2 : CommSemiring.{u4} A] [_inst_3 : CommSemiring.{u5} B] [_inst_4 : Algebra.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2)] [_inst_5 : Algebra.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3)] (φ : AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) {α : Type.{u2}} [_inst_6 : Zero.{u2} α] {ι : Type.{u1}} (f : Finsupp.{u1, u2} ι α _inst_6) (g : ι -> α -> A), Eq.{succ u5} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) (Finsupp.prod.{u1, u2, u4} ι α A _inst_6 (CommSemiring.toCommMonoid.{u4} A _inst_2) f g)) (FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5 (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5))))) φ (Finsupp.prod.{u1, u2, u4} ι α A _inst_6 (CommSemiring.toCommMonoid.{u4} A _inst_2) f g)) (Finsupp.prod.{u1, u2, u5} ι α B _inst_6 (CommSemiring.toCommMonoid.{u5} B _inst_3) f (fun (i : ι) (a : α) => FunLike.coe.{max (succ u4) (succ u5), succ u4, succ u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2187 : A) => B) _x) (SMulHomClass.toFunLike.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (SMulZeroClass.toSMul.{u3, u4} R A (AddMonoid.toZero.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribSMul.toSMulZeroClass.{u3, u4} R A (AddMonoid.toAddZeroClass.{u4} A (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))))) (DistribMulAction.toDistribSMul.{u3, u4} R A (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4))))) (SMulZeroClass.toSMul.{u3, u5} R B (AddMonoid.toZero.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribSMul.toSMulZeroClass.{u3, u5} R B (AddMonoid.toAddZeroClass.{u5} B (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))))) (DistribMulAction.toDistribSMul.{u3, u5} R B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5))))) (DistribMulActionHomClass.toSMulHomClass.{max u4 u5, u3, u4, u5} (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) R A B (MonoidWithZero.toMonoid.{u3} R (Semiring.toMonoidWithZero.{u3} R (CommSemiring.toSemiring.{u3} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2))))) (AddCommMonoid.toAddMonoid.{u5} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3))))) (Module.toDistribMulAction.{u3, u4} R A (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4)) (Module.toDistribMulAction.{u3, u5} R B (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5)) (SemilinearMapClass.distribMulActionHomClass.{u3, u4, u5, max u4 u5} R A B (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (CommSemiring.toSemiring.{u3} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} A (Semiring.toNonAssocSemiring.{u4} A (CommSemiring.toSemiring.{u4} A _inst_2)))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u5} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u5} B (Semiring.toNonAssocSemiring.{u5} B (CommSemiring.toSemiring.{u5} B _inst_3)))) (Algebra.toModule.{u3, u4} R A _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) _inst_4) (Algebra.toModule.{u3, u5} R B _inst_1 (CommSemiring.toSemiring.{u5} B _inst_3) _inst_5) (AlgHomClass.linearMapClass.{u3, u4, u5, max u4 u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5 (AlgHom.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5) (AlgHom.algHomClass.{u3, u4, u5} R A B _inst_1 (CommSemiring.toSemiring.{u4} A _inst_2) (CommSemiring.toSemiring.{u5} B _inst_3) _inst_4 _inst_5))))) φ (g i a)))
 Case conversion may be inaccurate. Consider using '#align alg_hom.map_finsupp_prod AlgHom.map_finsupp_prodₓ'. -/
 protected theorem map_finsupp_prod {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.Prod g) = f.Prod fun i a => φ (g i a) :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/95a87616d63b3cb49d3fe678d416fbe9c4217bf4

@@ -169,7 +169,7 @@ instance coeOutAddMonoidHom : Coe (A →ₐ[R] B) (A →+ B) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (MulOneClass.toHasOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (MulOneClass.toHasOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toHasMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toHasMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (f x) (f y))) (h₃ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 0 (OfNat.mk.{u2} A 0 (Zero.zero.{u2} A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))))) (OfNat.ofNat.{u3} B 0 (OfNat.mk.{u3} B 0 (Zero.zero.{u3} B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (f (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toHasAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toHasAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (f x) (f y))) (h₅ : forall (r : R), Eq.{succ u3} B (f (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h₁ h₂ h₃ h₄ h₅)) f
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk AlgHom.coe_mksₓ'. -/
 @[simp, norm_cast]
 theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
@@ -192,7 +192,7 @@ theorem toRingHom_eq_coe (f : A →ₐ[R] B) : f.toRingHom = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u2) (succ u3)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u2) (succ u3)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHom.hasCoeT.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
@@ -203,7 +203,7 @@ theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u3) (succ u2), max (succ u2) (succ u3)} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (fun (_x : MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) => A -> B) (MonoidHom.hasCoeToFun.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u3) (succ u2)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u3) (succ u2)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.hasCoeT.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
@@ -389,7 +389,7 @@ protected theorem map_bit1 (x) : φ (bit1 x) = bit1 (φ x) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f (SMul.smul.{u1, u2} R A (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (SMulWithZero.toSmulZeroClass.{u1, u2} R A (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (MulActionWithZero.toSMulWithZero.{u1, u2} R A (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (Module.toMulActionWithZero.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) c x)) (SMul.smul.{u1, u3} R B (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (SMulWithZero.toSmulZeroClass.{u1, u3} R B (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MulActionWithZero.toSMulWithZero.{u1, u3} R B (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (Module.toMulActionWithZero.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) c (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 Case conversion may be inaccurate. Consider using '#align alg_hom.mk' AlgHom.mk'ₓ'. -/
 /-- If a `ring_hom` is `R`-linear, then it is an `alg_hom`. -/
 def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →ₐ[R] B :=
@@ -402,7 +402,7 @@ def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f (SMul.smul.{u1, u2} R A (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (SMulWithZero.toSmulZeroClass.{u1, u2} R A (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (MulActionWithZero.toSMulWithZero.{u1, u2} R A (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (Module.toMulActionWithZero.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) c x)) (SMul.smul.{u1, u3} R B (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (SMulWithZero.toSmulZeroClass.{u1, u3} R B (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MulActionWithZero.toSMulWithZero.{u1, u3} R B (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (Module.toMulActionWithZero.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) c (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x 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(Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f)
 but is expected to have type
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(NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) 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_inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk' AlgHom.coe_mk'ₓ'. -/
 @[simp]
 theorem coe_mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : ⇑(mk' f h) = f :=
@@ -643,7 +643,7 @@ theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} A (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} B (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f x))
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2397 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
 Case conversion may be inaccurate. Consider using '#align alg_hom.algebra_map_eq_apply AlgHom.algebraMap_eq_applyₓ'. -/
 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/c89fe2d59ae06402c3f55f978016d1ada444f57e

@@ -512,7 +512,7 @@ def toLinearMap : A →ₗ[R] B where
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (fun (_x : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ p)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ p)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ p)
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_apply AlgHom.toLinearMap_applyₓ'. -/
 @[simp]
 theorem toLinearMap_apply (p : A) : φ.toLinearMap p = φ p :=
@@ -544,7 +544,7 @@ theorem toLinearMap_id : toLinearMap (AlgHom.id R A) = LinearMap.id :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)), (Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)), (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A 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(x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)), (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) -> (forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map AlgHom.ofLinearMapₓ'. -/
 /-- Promote a `linear_map` to an `alg_hom` by supplying proofs about the behavior on `1` and `*`. -/
 @[simps]
@@ -561,7 +561,7 @@ def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (map_one : Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (fun (_x : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (AddMonoidWithOne.toOne.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), 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 but is expected to have type
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=> (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) y))), Eq.{max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) map_one map_mul) φ
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (map_one : Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) y))), Eq.{max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) map_one map_mul) φ
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMapₓ'. -/
 @[simp]
 theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
@@ -575,7 +575,7 @@ theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (map_one : Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (AddMonoidWithOne.toOne.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (Distrib.toHasMul.{u3} B (NonUnitalNonAssocSemiring.toDistrib.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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 but is expected to have type
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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (map_one : Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMapₓ'. -/
 @[simp]
 theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
@@ -589,7 +589,7 @@ theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} A (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} A (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_2)))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u2, u2, u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) x) (instHMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) x) (NonUnitalNonAssocSemiring.toMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) x) (Semiring.toNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) x) _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
+  forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_2)))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u2, u2, u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (instHMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (NonUnitalNonAssocSemiring.toMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) (Semiring.toNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) x) _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_id AlgHom.ofLinearMap_idₓ'. -/
 @[simp]
 theorem ofLinearMap_id (map_one) (map_mul) :

mathlib commit https://github.com/leanprover-community/mathlib/commit/3180fab693e2cee3bff62675571264cb8778b212

@@ -169,7 +169,7 @@ instance coeOutAddMonoidHom : Coe (A →ₐ[R] B) (A →+ B) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (MulOneClass.toHasOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (MulOneClass.toHasOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toHasMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toHasMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (f x) (f y))) (h₃ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 0 (OfNat.mk.{u2} A 0 (Zero.zero.{u2} A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))))) (OfNat.ofNat.{u3} B 0 (OfNat.mk.{u3} B 0 (Zero.zero.{u3} B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (f (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toHasAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toHasAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (f x) (f y))) (h₅ : forall (r : R), Eq.{succ u3} B (f (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h₁ h₂ h₃ h₄ h₅)) f
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 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(Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk AlgHom.coe_mksₓ'. -/
 @[simp, norm_cast]
 theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
@@ -192,7 +192,7 @@ theorem toRingHom_eq_coe (f : A →ₐ[R] B) : f.toRingHom = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u2) (succ u3)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u2) (succ u3)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHom.hasCoeT.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
@@ -203,7 +203,7 @@ theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u3) (succ u2), max (succ u2) (succ u3)} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (fun (_x : MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) => A -> B) (MonoidHom.hasCoeToFun.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u3) (succ u2)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u3) (succ u2)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.hasCoeT.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
@@ -214,7 +214,7 @@ theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u3) (succ u2), max (succ u2) (succ u3)} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (fun (_x : AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) => A -> B) (AddMonoidHom.hasCoeToFun.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u3) (succ u2)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u3) (succ u2)} a b] => 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 but is expected to have type
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(CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.403 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.403 : A) => B) _x) (AddHomClass.toFunLike.{max u2 u3, u2, u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A B (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (AddMonoidHomClass.toAddHomClass.{max u2 u3, u2, u3} (AddMonoidHom.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (AddMonoidHom.addMonoidHomClass.{u2, u3} A B (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (AddMonoidHomClass.toAddMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulActionHomClass.toAddMonoidHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_add_monoid_hom AlgHom.coe_toAddMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toAddMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →+ B) = f :=
@@ -389,7 +389,7 @@ protected theorem map_bit1 (x) : φ (bit1 x) = bit1 (φ x) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f (SMul.smul.{u1, u2} R A (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (SMulWithZero.toSmulZeroClass.{u1, u2} R A (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (MulActionWithZero.toSMulWithZero.{u1, u2} R A (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (Module.toMulActionWithZero.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) c x)) (SMul.smul.{u1, u3} R B (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (SMulWithZero.toSmulZeroClass.{u1, u3} R B (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MulActionWithZero.toSMulWithZero.{u1, u3} R B (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (Module.toMulActionWithZero.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) c (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 Case conversion may be inaccurate. Consider using '#align alg_hom.mk' AlgHom.mk'ₓ'. -/
 /-- If a `ring_hom` is `R`-linear, then it is an `alg_hom`. -/
 def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →ₐ[R] B :=
@@ -402,7 +402,7 @@ def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f (SMul.smul.{u1, u2} R A (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (SMulWithZero.toSmulZeroClass.{u1, u2} R A (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (MulActionWithZero.toSMulWithZero.{u1, u2} R A (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (Module.toMulActionWithZero.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) c x)) (SMul.smul.{u1, u3} R B (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (SMulWithZero.toSmulZeroClass.{u1, u3} R B (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MulActionWithZero.toSMulWithZero.{u1, u3} R B (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (Module.toMulActionWithZero.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) c (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x 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(Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f)
 but is expected to have type
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(NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) 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_inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk' AlgHom.coe_mk'ₓ'. -/
 @[simp]
 theorem coe_mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : ⇑(mk' f h) = f :=
@@ -512,7 +512,7 @@ def toLinearMap : A →ₗ[R] B where
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (fun (_x : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) φ p)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ p)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (p : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) p) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) φ p)
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_apply AlgHom.toLinearMap_applyₓ'. -/
 @[simp]
 theorem toLinearMap_apply (p : A) : φ.toLinearMap p = φ p :=
@@ -544,7 +544,7 @@ theorem toLinearMap_id : toLinearMap (AlgHom.id R A) = LinearMap.id :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)), (Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A 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 but is expected to have type
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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A 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(x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)), (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) -> (forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, 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A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map AlgHom.ofLinearMapₓ'. -/
 /-- Promote a `linear_map` to an `alg_hom` by supplying proofs about the behavior on `1` and `*`. -/
 @[simps]
@@ -561,7 +561,7 @@ def ofLinearMap (f : A →ₗ[R] B) (map_one : f 1 = 1) (map_mul : ∀ x y, f (x
 lean 3 declaration is
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 but is expected to have type
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(Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) y))), Eq.{max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) map_one map_mul) φ
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (φ : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (map_one : Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B 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(x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) y))), Eq.{max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 φ) map_one map_mul) φ
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_to_linear_map AlgHom.ofLinearMap_toLinearMapₓ'. -/
 @[simp]
 theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
@@ -575,7 +575,7 @@ theorem ofLinearMap_toLinearMap (map_one) (map_mul) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (map_one : Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (AddMonoidWithOne.toOne.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (Distrib.toHasMul.{u3} B (NonUnitalNonAssocSemiring.toDistrib.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (LinearMap.{u1, u1, 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) => A -> B) (LinearMap.hasCoeToFun.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (map_one : Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_3)))) (map_mul : forall (x : A) (y : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (map_one : Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 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(NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) 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(Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u3, u3, u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (instHMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (NonUnitalNonAssocSemiring.toMul.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) (Semiring.toNonAssocSemiring.{u3} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) x) _inst_3)))) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f x) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => B) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u3} R R A B (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) f y))), Eq.{max (succ u2) (succ u3)} (LinearMap.{u1, u1, u2, u3} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (AlgHom.toLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.ofLinearMap.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f map_one map_mul)) f
 Case conversion may be inaccurate. Consider using '#align alg_hom.to_linear_map_of_linear_map AlgHom.toLinearMap_ofLinearMapₓ'. -/
 @[simp]
 theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
@@ -589,7 +589,7 @@ theorem toLinearMap_ofLinearMap (f : A →ₗ[R] B) (map_one) (map_mul) :
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} A (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (AddMonoidWithOne.toOne.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} A (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (Distrib.toHasMul.{u2} A (NonUnitalNonAssocSemiring.toDistrib.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (coeFn.{succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (fun (_x : LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) => A -> A) (LinearMap.hasCoeToFun.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_2)))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u2, u2, u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) y) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) x) (instHMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) x) (NonUnitalNonAssocSemiring.toMul.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) x) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) x) (Semiring.toNonAssocSemiring.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) x) _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6178 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
+  forall {R : Type.{u1}} {A : Type.{u2}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] (map_one : Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x 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_inst_6)) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (OfNat.ofNat.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) 1 (One.toOfNat1.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) (Semiring.toOne.{u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (Semiring.toOne.{u2} A _inst_2)))) _inst_2)))) (map_mul : forall (x : A) (y : A), Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) x y)) (HMul.hMul.{u2, u2, u2} ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) x) ((fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) y) ((fun 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(Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) x) (FunLike.coe.{succ u2, succ u2, succ u2} (LinearMap.{u1, u1, u2, u2} R R (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) A A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6190 : A) => A) _x) (LinearMap.instFunLikeLinearMap.{u1, u1, u2, u2} R R A A (CommSemiring.toSemiring.{u1} R _inst_1) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) y))), Eq.{succ u2} (AlgHom.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6) (AlgHom.ofLinearMap.{u1, u2, u2} R A A _inst_1 _inst_2 _inst_2 _inst_6 _inst_6 (LinearMap.id.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) map_one map_mul) (AlgHom.id.{u1, u2} R A _inst_1 _inst_2 _inst_6)
 Case conversion may be inaccurate. Consider using '#align alg_hom.of_linear_map_id AlgHom.ofLinearMap_idₓ'. -/
 @[simp]
 theorem ofLinearMap_id (map_one) (map_mul) :
@@ -643,7 +643,7 @@ theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} A (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} B (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f x))
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2391 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
 Case conversion may be inaccurate. Consider using '#align alg_hom.algebra_map_eq_apply AlgHom.algebraMap_eq_applyₓ'. -/
 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/38f16f960f5006c6c0c2bac7b0aba5273188f4e5

@@ -169,7 +169,7 @@ instance coeOutAddMonoidHom : Coe (A →ₐ[R] B) (A →+ B) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (OfNat.mk.{u2} A 1 (One.one.{u2} A (MulOneClass.toHasOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))) (OfNat.ofNat.{u3} B 1 (OfNat.mk.{u3} B 1 (One.one.{u3} B (MulOneClass.toHasOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (f (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toHasMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toHasMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (f x) (f y))) (h₃ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 0 (OfNat.mk.{u2} A 0 (Zero.zero.{u2} A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))))))) (OfNat.ofNat.{u3} B 0 (OfNat.mk.{u3} B 0 (Zero.zero.{u3} B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (f (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toHasAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toHasAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (f x) (f y))) (h₅ : forall (r : R), Eq.{succ u3} B (f (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h₁ h₂ h₃ h₄ h₅)) f
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) 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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 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(Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {f : A -> B} (h₁ : Eq.{succ u3} B (f (OfNat.ofNat.{u2} A 1 (One.toOfNat1.{u2} A (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) (OfNat.ofNat.{u3} B 1 (One.toOfNat1.{u3} B (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (h₂ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) (HMul.hMul.{u2, u2, u2} A A A (instHMul.{u2} A (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) x y)) (HMul.hMul.{u3, u3, u3} B B B (instHMul.{u3} B (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) y))) (h₃ : Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (OfNat.ofNat.{u2} A 0 (Zero.toOfNat0.{u2} A (AddZeroClass.toZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))))) (OfNat.ofNat.{u3} B 0 (Zero.toOfNat0.{u3} B (AddZeroClass.toZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))))) (h₄ : forall (x : A) (y : A), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) (HAdd.hAdd.{u2, u2, u2} A A A (instHAdd.{u2} A (AddZeroClass.toAdd.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddMonoidWithOne.toAddMonoid.{u2} A (AddCommMonoidWithOne.toAddMonoidWithOne.{u2} A (NonAssocSemiring.toAddCommMonoidWithOne.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))))) x y)) (HAdd.hAdd.{u3, u3, u3} B B B (instHAdd.{u3} B (AddZeroClass.toAdd.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddMonoidWithOne.toAddMonoid.{u3} B (AddCommMonoidWithOne.toAddMonoidWithOne.{u3} B (NonAssocSemiring.toAddCommMonoidWithOne.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))))) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) x) (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂)) y))) (h₅ : forall (r : R), Eq.{succ u3} B (OneHom.toFun.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.toOneHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHom.toMonoidHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄))) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) r)) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) r)), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (MonoidHom.mk.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (OneHom.mk.{u2, u3} A B (MulOneClass.toOne.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toOne.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) f h₁) h₂) h₃ h₄) h₅)) f
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk AlgHom.coe_mksₓ'. -/
 @[simp, norm_cast]
 theorem coe_mks {f : A → B} (h₁ h₂ h₃ h₄ h₅) : ⇑(⟨f, h₁, h₂, h₃, h₄, h₅⟩ : A →ₐ[R] B) = f :=
@@ -192,7 +192,7 @@ theorem toRingHom_eq_coe (f : A →ₐ[R] B) : f.toRingHom = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u2) (succ u3)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u2) (succ u3)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHom.hasCoeT.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (RingHomClass.toRingHom.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_ring_hom AlgHom.coe_toRingHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
@@ -203,7 +203,7 @@ theorem coe_toRingHom (f : A →ₐ[R] B) : ⇑(f : A →+* B) = f :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u3) (succ u2), max (succ u2) (succ u3)} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (fun (_x : MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) => A -> B) (MonoidHom.hasCoeToFun.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) ((fun (a : Sort.{max (succ u2) (succ u3)}) (b : Sort.{max (succ u3) (succ u2)}) [self : HasLiftT.{max (succ u2) (succ u3), max (succ u3) (succ u2)} a b] => self.0) (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (HasLiftT.mk.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (CoeTCₓ.coe.{max (succ u2) (succ u3), max (succ u3) (succ u2)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHom.hasCoeT.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)))))) f)) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulOneClass.toMul.{u2} A (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (MulOneClass.toMul.{u3} B (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (MonoidHomClass.toMulHomClass.{max u2 u3, u2, u3} (MonoidHom.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (MonoidHom.monoidHomClass.{u2, u3} A B (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MonoidHomClass.toMonoidHom.{u2, u3, max u2 u3} A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (MulZeroOneClass.toMulOneClass.{u2} A (NonAssocSemiring.toMulZeroOneClass.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u3} B (NonAssocSemiring.toMulZeroOneClass.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (RingHomClass.toMonoidHomClass.{max u2 u3, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (AlgHomClass.toRingHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))) f)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_to_monoid_hom AlgHom.coe_toMonoidHomₓ'. -/
 @[simp, norm_cast]
 theorem coe_toMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →* B) = f :=
@@ -389,7 +389,7 @@ protected theorem map_bit1 (x) : φ (bit1 x) = bit1 (φ x) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f (SMul.smul.{u1, u2} R A (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (SMulWithZero.toSmulZeroClass.{u1, u2} R A (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (MulActionWithZero.toSMulWithZero.{u1, u2} R A (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (Module.toMulActionWithZero.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) c x)) (SMul.smul.{u1, u3} R B (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (SMulWithZero.toSmulZeroClass.{u1, u3} R B (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MulActionWithZero.toSMulWithZero.{u1, u3} R B (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (Module.toMulActionWithZero.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) c (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)), (forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))) -> (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7)
 Case conversion may be inaccurate. Consider using '#align alg_hom.mk' AlgHom.mk'ₓ'. -/
 /-- If a `ring_hom` is `R`-linear, then it is an `alg_hom`. -/
 def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →ₐ[R] B :=
@@ -402,7 +402,7 @@ def mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : A →
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} B (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => A -> B) (RingHom.hasCoeToFun.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f (SMul.smul.{u1, u2} R A (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (SMulWithZero.toSmulZeroClass.{u1, u2} R A (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (MulActionWithZero.toSMulWithZero.{u1, u2} R A (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (Module.toMulActionWithZero.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) c x)) (SMul.smul.{u1, u3} R B (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (SMulWithZero.toSmulZeroClass.{u1, u3} R B (MulZeroClass.toHasZero.{u1} R (MulZeroOneClass.toMulZeroClass.{u1} R (MonoidWithZero.toMulZeroOneClass.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))))) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (MulActionWithZero.toSMulWithZero.{u1, u3} R B (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (Module.toMulActionWithZero.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) c (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x 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(Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) f)
 but is expected to have type
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(NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) 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_inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (h : forall (c : R) (x : A), Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f (HSMul.hSMul.{u1, u2, u2} R A A (instHSMul.{u1, u2} R A (Algebra.toSMul.{u1, u2} R A _inst_1 _inst_2 _inst_6)) c x)) (HSMul.hSMul.{u1, u3, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) (instHSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) (Algebra.toSMul.{u1, u3} R ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) x) _inst_1 _inst_3 _inst_7)) c (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f x))), Eq.{max (succ u2) (succ u3)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHom.mk'.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 f h)) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : A) => B) _x) (MulHomClass.toFunLike.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u2 u3, u2, u3} (RingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u2, u3} A B (Semiring.toNonAssocSemiring.{u2} A _inst_2) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_mk' AlgHom.coe_mk'ₓ'. -/
 @[simp]
 theorem coe_mk' (f : A →+* B) (h : ∀ (c : R) (x), f (c • x) = c • f x) : ⇑(mk' f h) = f :=
@@ -643,7 +643,7 @@ theorem mul_apply (φ ψ : A →ₐ[R] A) (x : A) : (φ * ψ) x = φ (ψ x) :=
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} A (coeFn.{max (succ u1) (succ u2), max (succ u1) (succ u2)} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (fun (_x : RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) => R -> A) (RingHom.hasCoeToFun.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} B (coeFn.{max (succ u1) (succ u3), max (succ u1) (succ u3)} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (fun (_x : RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) => R -> B) (RingHom.hasCoeToFun.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) f x))
 but is expected to have type
-  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2398 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
+  forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] (f : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) {y : R} {x : A}, (Eq.{succ u2} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => A) y) (FunLike.coe.{max (succ u1) (succ u2), succ u1, succ u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => A) _x) (MulHomClass.toFunLike.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u2, u1, u2} (RingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2)) R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2) (RingHom.instRingHomClassRingHom.{u1, u2} R A (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (algebraMap.{u1, u2} R A _inst_1 _inst_2 _inst_6) y) x) -> (Eq.{succ u3} ((fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => B) y) (FunLike.coe.{max (succ u1) (succ u3), succ u1, succ u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R (fun (_x : R) => (fun (x._@.Mathlib.Algebra.Hom.Group._hyg.2372 : R) => B) _x) (MulHomClass.toFunLike.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonUnitalNonAssocSemiring.toMul.{u1} R (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)))) (NonUnitalNonAssocSemiring.toMul.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (NonUnitalRingHomClass.toMulHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u1} R (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)) (RingHomClass.toNonUnitalRingHomClass.{max u1 u3, u1, u3} (RingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3)) R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3) (RingHom.instRingHomClassRingHom.{u1, u3} R B (Semiring.toNonAssocSemiring.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1)) (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (algebraMap.{u1, u3} R B _inst_1 _inst_3 _inst_7) y) (FunLike.coe.{max (succ u2) (succ u3), succ u2, succ u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u1, u2} R A (AddMonoid.toZero.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u1, u3} R B (AddMonoid.toZero.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u2 u3, u1, u2, u3} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, max u2 u3} R A B (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, max u2 u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) f x))
 Case conversion may be inaccurate. Consider using '#align alg_hom.algebra_map_eq_apply AlgHom.algebraMap_eq_applyₓ'. -/
 theorem algebraMap_eq_apply (f : A →ₐ[R] B) {y : R} {x : A} (h : algebraMap R A y = x) :
     algebraMap R B y = f x :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/62e8311c791f02c47451bf14aa2501048e7c2f33

@@ -104,7 +104,7 @@ initialize_simps_projections AlgHom (toFun → apply)
 lean 3 declaration is
   forall {R : Type.{u1}} {A : Type.{u2}} {B : Type.{u3}} [_inst_1 : CommSemiring.{u1} R] [_inst_2 : Semiring.{u2} A] [_inst_3 : Semiring.{u3} B] [_inst_6 : Algebra.{u1, u2} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u1, u3} R B _inst_1 _inst_3] {F : Type.{u4}} [_inst_10 : AlgHomClass.{u4, u1, u2, u3} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7] (f : F), Eq.{max (succ u2) (succ u3)} (A -> B) (coeFn.{max (succ u2) (succ u3), max (succ u2) (succ u3)} (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (fun (_x : AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) => A -> B) ([anonymous].{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) ((fun (a : Type.{u4}) (b : Sort.{max (succ u2) (succ u3)}) [self : HasLiftT.{succ u4, max (succ u2) (succ u3)} a b] => self.0) F (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (HasLiftT.mk.{succ u4, max (succ u2) (succ u3)} F (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CoeTCₓ.coe.{succ u4, max (succ u2) (succ u3)} F (AlgHom.{u1, u2, u3} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHomClass.coeTC.{u1, u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10))) f)) (coeFn.{succ u4, max (succ u2) (succ u3)} F (fun (_x : F) => A -> B) (FunLike.hasCoeToFun.{succ u4, succ u2, succ u3} F A (fun (_x : A) => B) (SMulHomClass.toFunLike.{u4, u1, u2, u3} F R A B (SMulZeroClass.toHasSmul.{u1, u2} R A (AddZeroClass.toHasZero.{u2} A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))))) (DistribSMul.toSmulZeroClass.{u1, u2} R A (AddMonoid.toAddZeroClass.{u2} A (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))))) (DistribMulAction.toDistribSMul.{u1, u2} R A (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toHasSmul.{u1, u3} R B (AddZeroClass.toHasZero.{u3} B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))))) (DistribSMul.toSmulZeroClass.{u1, u3} R B (AddMonoid.toAddZeroClass.{u3} B (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))))) (DistribMulAction.toDistribSMul.{u1, u3} R B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSmulHomClass.{u4, u1, u2, u3} F R A B (MonoidWithZero.toMonoid.{u1} R (Semiring.toMonoidWithZero.{u1} R (CommSemiring.toSemiring.{u1} R _inst_1))) (AddCommMonoid.toAddMonoid.{u2} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u3} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3)))) (Module.toDistribMulAction.{u1, u2} R A (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u1, u3} R B (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u1, u2, u3, u4} R A B F (CommSemiring.toSemiring.{u1} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u2} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u2} A (Semiring.toNonAssocSemiring.{u2} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} B (Semiring.toNonAssocSemiring.{u3} B _inst_3))) (Algebra.toModule.{u1, u2} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u1, u3} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u1, u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10))))) f)
 but is expected to have type
-  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] {F : Type.{u1}} [_inst_10 : AlgHomClass.{u1, u2, u3, u4} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7] (f : F), Eq.{max (succ u3) (succ u4)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (let src._@.Mathlib.Algebra.Algebra.Hom._hyg.1134 : RingHom.{u3, u4} A B (Semiring.toNonAssocSemiring.{u3} A _inst_2) (Semiring.toNonAssocSemiring.{u4} B _inst_3) := RingHomClass.toRingHom.{u1, u3, u4} F A B (Semiring.toNonAssocSemiring.{u3} A _inst_2) (Semiring.toNonAssocSemiring.{u4} B _inst_3) (AlgHomClass.toRingHomClass.{u1, u2, u3, u4} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 _inst_10) f; AlgHom.mk.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (RingHom.mk.{u3, u4} A B (Semiring.toNonAssocSemiring.{u3} A _inst_2) (Semiring.toNonAssocSemiring.{u4} B _inst_3) (MonoidHom.mk.{u3, u4} A B (MulZeroOneClass.toMulOneClass.{u3} A (NonAssocSemiring.toMulZeroOneClass.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (MulZeroOneClass.toMulOneClass.{u4} B (NonAssocSemiring.toMulZeroOneClass.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (OneHom.mk.{u3, u4} A B (MulOneClass.toOne.{u3} A (MulZeroOneClass.toMulOneClass.{u3} A (NonAssocSemiring.toMulZeroOneClass.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (MulOneClass.toOne.{u4} B (MulZeroOneClass.toMulOneClass.{u4} B (NonAssocSemiring.toMulZeroOneClass.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (FunLike.coe.{succ u1, succ u3, succ u4} F A (fun (a : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) a) (SMulHomClass.toFunLike.{u1, u2, u3, u4} F R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{u1, u2, u3, u4} F R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, u1} R A B F (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10)))) f) (AlgHomClass.coeTC.proof_1.{u4, u3, u1, u2} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10 f)) (AlgHomClass.coeTC.proof_2.{u4, u3, u1, u2} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10 f)) (AlgHomClass.coeTC.proof_3.{u4, u3, u1, u2} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10 f) (AlgHomClass.coeTC.proof_4.{u4, u3, u1, u2} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10 f)) (AlgHomClass.commutes.{u1, u2, u3, u4} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 _inst_10 f))) (FunLike.coe.{succ u1, succ u3, succ u4} F A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{u1, u2, u3, u4} F R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{u1, u2, u3, u4} F R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, u1} R A B F (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10)))) f)
+  forall {R : Type.{u2}} {A : Type.{u3}} {B : Type.{u4}} [_inst_1 : CommSemiring.{u2} R] [_inst_2 : Semiring.{u3} A] [_inst_3 : Semiring.{u4} B] [_inst_6 : Algebra.{u2, u3} R A _inst_1 _inst_2] [_inst_7 : Algebra.{u2, u4} R B _inst_1 _inst_3] {F : Type.{u1}} [_inst_10 : AlgHomClass.{u1, u2, u3, u4} F R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7] (f : F), Eq.{max (succ u3) (succ u4)} (forall (ᾰ : A), (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) ᾰ) (FunLike.coe.{max (succ u3) (succ u4), succ u3, succ u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u4, u2, u3, u4} (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, max u3 u4} R A B (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, max u3 u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 (AlgHom.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7) (AlgHom.algHomClass.{u2, u3, u4} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7))))) (AlgHomClass.toAlgHom.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10 f)) (FunLike.coe.{succ u1, succ u3, succ u4} F A (fun (_x : A) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : A) => B) _x) (SMulHomClass.toFunLike.{u1, u2, u3, u4} F R A B (SMulZeroClass.toSMul.{u2, u3} R A (AddMonoid.toZero.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribSMul.toSMulZeroClass.{u2, u3} R A (AddMonoid.toAddZeroClass.{u3} A (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))))) (DistribMulAction.toDistribSMul.{u2, u3} R A (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6))))) (SMulZeroClass.toSMul.{u2, u4} R B (AddMonoid.toZero.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribSMul.toSMulZeroClass.{u2, u4} R B (AddMonoid.toAddZeroClass.{u4} B (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))))) (DistribMulAction.toDistribSMul.{u2, u4} R B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7))))) (DistribMulActionHomClass.toSMulHomClass.{u1, u2, u3, u4} F R A B (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (CommSemiring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{u3} A (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2)))) (AddCommMonoid.toAddMonoid.{u4} B (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3)))) (Module.toDistribMulAction.{u2, u3} R A (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6)) (Module.toDistribMulAction.{u2, u4} R B (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7)) (SemilinearMapClass.distribMulActionHomClass.{u2, u3, u4, u1} R A B F (CommSemiring.toSemiring.{u2} R _inst_1) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u3} A (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u3} A (Semiring.toNonAssocSemiring.{u3} A _inst_2))) (NonUnitalNonAssocSemiring.toAddCommMonoid.{u4} B (NonAssocSemiring.toNonUnitalNonAssocSemiring.{u4} B (Semiring.toNonAssocSemiring.{u4} B _inst_3))) (Algebra.toModule.{u2, u3} R A _inst_1 _inst_2 _inst_6) (Algebra.toModule.{u2, u4} R B _inst_1 _inst_3 _inst_7) (AlgHomClass.linearMapClass.{u2, u3, u4, u1} R A B _inst_1 _inst_2 _inst_3 _inst_6 _inst_7 F _inst_10)))) f)
 Case conversion may be inaccurate. Consider using '#align alg_hom.coe_coe AlgHom.coe_coeₓ'. -/
 @[simp, protected]
 theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=

mathlib commit https://github.com/leanprover-community/mathlib/commit/3ade05ac9447ae31a22d2ea5423435e054131240

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Yury Kudryashov
 
 ! This file was ported from Lean 3 source module algebra.algebra.hom
-! leanprover-community/mathlib commit b16045e4bf61c6fd619a1a68854ab3d605dcd017
+! leanprover-community/mathlib commit 23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -13,6 +13,9 @@ import Mathbin.Algebra.Algebra.Basic
 /-!
 # Homomorphisms of `R`-algebras
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 This file defines bundled homomorphisms of `R`-algebras.
 
 ## Main definitions

mathlib commit https://github.com/leanprover-community/mathlib/commit/bd9851ca476957ea4549eb19b40e7b5ade9428cc

Reference the newly created issues #12094 and #12096, as well as the pre-existing #5171. Change all references to #10927 to #5171. Some of these changes were not labelled as "porting note"; change this for good measure.

@@ -28,7 +28,7 @@ open BigOperators
 universe u v w u₁ v₁
 
 /-- Defining the homomorphism in the category R-Alg. -/
--- @[nolint has_nonempty_instance] -- Porting note: This linter does not exist yet.
+-- @[nolint has_nonempty_instance] -- Porting note(#5171): linter not ported yet
 structure AlgHom (R : Type u) (A : Type v) (B : Type w) [CommSemiring R] [Semiring A] [Semiring B]
   [Algebra R A] [Algebra R B] extends RingHom A B where
   commutes' : ∀ r : R, toFun (algebraMap R A r) = algebraMap R B r

Cherry-picked from #9607 Co-authored-by: @semorrison

@@ -418,8 +418,8 @@ theorem map_smul_of_tower {R'} [SMul R' A] [SMul R' B] [LinearMap.CompatibleSMul
   φ.toLinearMap.map_smul_of_tower r x
 #align alg_hom.map_smul_of_tower AlgHom.map_smul_of_tower
 
-theorem map_list_prod (s : List A) : φ s.prod = (s.map φ).prod :=
-  φ.toRingHom.map_list_prod s
+nonrec theorem map_list_prod (s : List A) : φ s.prod = (s.map φ).prod :=
+  map_list_prod φ s
 #align alg_hom.map_list_prod AlgHom.map_list_prod
 
 @[simps (config := .lemmasOnly) toSemigroup_toMul_mul toOne_one]

@@ -73,10 +73,10 @@ instance (priority := 100) linearMapClass [AlgHomClass F R A B] : LinearMapClass
 /-- Turn an element of a type `F` satisfying `AlgHomClass F α β` into an actual
 `AlgHom`. This is declared as the default coercion from `F` to `α →+* β`. -/
 @[coe]
-def toAlgHom {F : Type*} [FunLike F A B] [AlgHomClass F R A B] (f : F) : A →ₐ[R] B :=
-  { (f : A →+* B) with
-      toFun := f
-      commutes' := AlgHomClass.commutes f }
+def toAlgHom {F : Type*} [FunLike F A B] [AlgHomClass F R A B] (f : F) : A →ₐ[R] B where
+  __ := (f : A →+* B)
+  toFun := f
+  commutes' := AlgHomClass.commutes f
 
 instance coeTC {F : Type*} [FunLike F A B] [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) :=
   ⟨AlgHomClass.toAlgHom⟩

Empty lines were removed by executing the following Python script twice

import os
import re


# Loop through each file in the repository
for dir_path, dirs, files in os.walk('.'):
  for filename in files:
    if filename.endswith('.lean'):
      file_path = os.path.join(dir_path, filename)

      # Open the file and read its contents
      with open(file_path, 'r') as file:
        content = file.read()

      # Use a regular expression to replace sequences of "variable" lines separated by empty lines
      # with sequences without empty lines
      modified_content = re.sub(r'(variable.*\n)\n(variable(?! .* in))', r'\1\2', content)

      # Write the modified content back to the file
      with open(file_path, 'w') as file:
        file.write(modified_content)

@@ -91,7 +91,6 @@ variable {R : Type u} {A : Type v} {B : Type w} {C : Type u₁} {D : Type v₁}
 section Semiring
 
 variable [CommSemiring R] [Semiring A] [Semiring B] [Semiring C] [Semiring D]
-
 variable [Algebra R A] [Algebra R B] [Algebra R C] [Algebra R D]
 
 -- Porting note: we don't port specialized `CoeFun` instances if there is `DFunLike` instead
@@ -452,7 +451,6 @@ end Semiring
 section CommSemiring
 
 variable [CommSemiring R] [CommSemiring A] [CommSemiring B]
-
 variable [Algebra R A] [Algebra R B] (φ : A →ₐ[R] B)
 
 protected theorem map_multiset_prod (s : Multiset A) : φ s.prod = (s.map φ).prod :=
@@ -474,7 +472,6 @@ end CommSemiring
 section Ring
 
 variable [CommSemiring R] [Ring A] [Ring B]
-
 variable [Algebra R A] [Algebra R B] (φ : A →ₐ[R] B)
 
 protected theorem map_neg (x) : φ (-x) = -φ x :=
@@ -548,7 +545,6 @@ end
 namespace Algebra
 
 variable (R : Type u) (A : Type v)
-
 variable [CommSemiring R] [Semiring A] [Algebra R A]
 
 /-- `AlgebraMap` as an `AlgHom`. -/
@@ -589,7 +585,6 @@ end Algebra
 namespace MulSemiringAction
 
 variable {M G : Type*} (R A : Type*) [CommSemiring R] [Semiring A] [Algebra R A]
-
 variable [Monoid M] [MulSemiringAction M A] [SMulCommClass M R A]
 
 /-- Each element of the monoid defines an algebra homomorphism.

Classifies by adding issue number #11445 to porting notes claiming anything equivalent to:

• "new definition"
• "added definition"

@@ -69,7 +69,7 @@ instance (priority := 100) linearMapClass [AlgHomClass F R A B] : LinearMapClass
       simp only [Algebra.smul_def, map_mul, commutes, RingHom.id_apply] }
 #align alg_hom_class.linear_map_class AlgHomClass.linearMapClass
 
--- Porting note: A new definition underlying a coercion `↑`.
+-- Porting note (#11445): A new definition underlying a coercion `↑`.
 /-- Turn an element of a type `F` satisfying `AlgHomClass F α β` into an actual
 `AlgHom`. This is declared as the default coercion from `F` to `α →+* β`. -/
 @[coe]
@@ -132,7 +132,7 @@ theorem toFun_eq_coe (f : A →ₐ[R] B) : f.toFun = f :=
 
 #noalign alg_hom.coe_ring_hom
 
--- Porting note: A new definition underlying a coercion `↑`.
+-- Porting note (#11445): A new definition underlying a coercion `↑`.
 @[coe]
 def toMonoidHom' (f : A →ₐ[R] B) : A →* B := (f : A →+* B)
 
@@ -140,7 +140,7 @@ instance coeOutMonoidHom : CoeOut (A →ₐ[R] B) (A →* B) :=
   ⟨AlgHom.toMonoidHom'⟩
 #align alg_hom.coe_monoid_hom AlgHom.coeOutMonoidHom
 
--- Porting note: A new definition underlying a coercion `↑`.
+-- Porting note (#11445): A new definition underlying a coercion `↑`.
 @[coe]
 def toAddMonoidHom' (f : A →ₐ[R] B) : A →+ B := (f : A →+* B)
 

... or reduce its scope (the full removal is not as obvious).

@@ -23,9 +23,6 @@ This file defines bundled homomorphisms of `R`-algebras.
 * `A →ₐ[R] B` : `R`-algebra homomorphism from `A` to `B`.
 -/
 
-set_option autoImplicit true
-
-
 open BigOperators
 
 universe u v w u₁ v₁
@@ -62,7 +59,7 @@ class AlgHomClass (F : Type*) (R A B : outParam Type*)
 
 namespace AlgHomClass
 
-variable {R : Type*} {A : Type*} {B : Type*} [CommSemiring R] [Semiring A] [Semiring B]
+variable {R A B F : Type*} [CommSemiring R] [Semiring A] [Semiring B]
   [Algebra R A] [Algebra R B] [FunLike F A B]
 
 -- see Note [lower instance priority]

It is redundant with the coercion for RingHomClass.toRingHom.

@@ -133,11 +133,7 @@ theorem toFun_eq_coe (f : A →ₐ[R] B) : f.toFun = f :=
   rfl
 #align alg_hom.to_fun_eq_coe AlgHom.toFun_eq_coe
 
-attribute [coe] AlgHom.toRingHom
-
-instance coeOutRingHom : CoeOut (A →ₐ[R] B) (A →+* B) :=
-  ⟨AlgHom.toRingHom⟩
-#align alg_hom.coe_ring_hom AlgHom.coeOutRingHom
+#noalign alg_hom.coe_ring_hom
 
 -- Porting note: A new definition underlying a coercion `↑`.
 @[coe]

Classify by adding issue number (#10618) to porting notes claiming anything semantically equivalent to simp can prove this or simp can simplify this.

@@ -57,7 +57,7 @@ class AlgHomClass (F : Type*) (R A B : outParam Type*)
 -- Porting note: `dangerousInstance` linter has become smarter about `outParam`s
 -- attribute [nolint dangerousInstance] AlgHomClass.toRingHomClass
 
--- Porting note: simp can prove this
+-- Porting note (#10618): simp can prove this
 -- attribute [simp] AlgHomClass.commutes
 
 namespace AlgHomClass
@@ -265,7 +265,7 @@ protected theorem map_pow (x : A) (n : ℕ) : φ (x ^ n) = φ x ^ n :=
   map_pow _ _ _
 #align alg_hom.map_pow AlgHom.map_pow
 
--- @[simp] -- Porting note: simp can prove this
+-- @[simp] -- Porting note (#10618): simp can prove this
 protected theorem map_smul (r : R) (x : A) : φ (r • x) = r • φ x :=
   map_smul _ _ _
 #align alg_hom.map_smul AlgHom.map_smul

@@ -586,6 +586,10 @@ instance : MulDistribMulAction (A →ₐ[R] A) Aˣ where
   smul_mul := fun x y z => by ext; exact x.map_mul _ _
   smul_one := fun x => by ext; exact x.map_one
 
+@[simp]
+theorem smul_units_def (f : A →ₐ[R] A) (x : Aˣ) :
+    f • x = Units.map (f : A →* A) x := rfl
+
 end MulDistribMulAction
 end Algebra
 

The FunLike hierarchy is very big and gets scanned through each time we need a coercion (via the CoeFun instance). It looks like unbundled inheritance suits Lean 4 better here. The only class that still extends FunLike is EquivLike, since that has a custom coe_injective' field that is easier to implement. All other classes should take FunLike or EquivLike as a parameter.

Zulip thread

Important changes

Previously, morphism classes would be Type-valued and extend FunLike:

/-- `MyHomClass F A B` states that `F` is a type of `MyClass.op`-preserving morphisms.
You should extend this class when you extend `MyHom`. -/
class MyHomClass (F : Type*) (A B : outParam <| Type*) [MyClass A] [MyClass B]
  extends FunLike F A B :=
(map_op : ∀ (f : F) (x y : A), f (MyClass.op x y) = MyClass.op (f x) (f y))

After this PR, they should be Prop-valued and take FunLike as a parameter:

/-- `MyHomClass F A B` states that `F` is a type of `MyClass.op`-preserving morphisms.
You should extend this class when you extend `MyHom`. -/
class MyHomClass (F : Type*) (A B : outParam <| Type*) [MyClass A] [MyClass B]
  [FunLike F A B] : Prop :=
(map_op : ∀ (f : F) (x y : A), f (MyClass.op x y) = MyClass.op (f x) (f y))

(Note that A B stay marked as outParam even though they are not purely required to be so due to the FunLike parameter already filling them in. This is required to see through type synonyms, which is important in the category theory library. Also, I think keeping them as outParam is slightly faster.)

Similarly, MyEquivClass should take EquivLike as a parameter.

As a result, every mention of [MyHomClass F A B] should become [FunLike F A B] [MyHomClass F A B].

Remaining issues

Slower (failing) search

While overall this gives some great speedups, there are some cases that are noticeably slower. In particular, a failing application of a lemma such as map_mul is more expensive. This is due to suboptimal processing of arguments. For example:

variable [FunLike F M N] [Mul M] [Mul N] (f : F) (x : M) (y : M)

theorem map_mul [MulHomClass F M N] : f (x * y) = f x * f y

example [AddHomClass F A B] : f (x * y) = f x * f y := map_mul f _ _

Before this PR, applying map_mul f gives the goals [Mul ?M] [Mul ?N] [MulHomClass F ?M ?N]. Since M and N are out_params, [MulHomClass F ?M ?N] is synthesized first, supplies values for ?M and ?N and then the Mul M and Mul N instances can be found.

After this PR, the goals become [FunLike F ?M ?N] [Mul ?M] [Mul ?N] [MulHomClass F ?M ?N]. Now [FunLike F ?M ?N] is synthesized first, supplies values for ?M and ?N and then the Mul M and Mul N instances can be found, before trying MulHomClass F M N which fails. Since the Mul hierarchy is very big, this can be slow to fail, especially when there is no such Mul instance.

A long-term but harder to achieve solution would be to specify the order in which instance goals get solved. For example, we'd like to change the arguments to map_mul to look like [FunLike F M N] [Mul M] [Mul N] [highPriority <| MulHomClass F M N] because MulHomClass fails or succeeds much faster than the others.

As a consequence, the simpNF linter is much slower since by design it tries and fails to apply many map_ lemmas. The same issue occurs a few times in existing calls to simp [map_mul], where map_mul is tried "too soon" and fails. Thanks to the speedup of leanprover/lean4#2478 the impact is very limited, only in files that already were close to the timeout.

simp not firing sometimes

This affects map_smulₛₗ and related definitions. For simp lemmas Lean apparently uses a slightly different mechanism to find instances, so that rw can find every argument to map_smulₛₗ successfully but simp can't: leanprover/lean4#3701.

Missing instances due to unification failing

Especially in the category theory library, we might sometimes have a type A which is also accessible as a synonym (Bundled A hA).1. Instance synthesis doesn't always work if we have f : A →* B but x * y : (Bundled A hA).1 or vice versa. This seems to be mostly fixed by keeping A B as outParams in MulHomClass F A B. (Presumably because Lean will do a definitional check A =?= (Bundled A hA).1 instead of using the syntax in the discrimination tree.)

Workaround for issues

The timeouts can be worked around for now by specifying which map_mul we mean, either as map_mul f for some explicit f, or as e.g. MonoidHomClass.map_mul.

map_smulₛₗ not firing as simp lemma can be worked around by going back to the pre-FunLike situation and making LinearMap.map_smulₛₗ a simp lemma instead of the generic map_smulₛₗ. Writing simp [map_smulₛₗ _] also works.

Co-authored-by: Matthew Ballard <matt@mrb.email> Co-authored-by: Scott Morrison <scott.morrison@gmail.com> Co-authored-by: Scott Morrison <scott@tqft.net> Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>

@@ -48,9 +48,9 @@ notation:25 A " →ₐ[" R "] " B => AlgHom R A B
 
 /-- `AlgHomClass F R A B` asserts `F` is a type of bundled algebra homomorphisms
 from `A` to `B`.  -/
-class AlgHomClass (F : Type*) (R : outParam (Type*)) (A : outParam (Type*))
-  (B : outParam (Type*)) [CommSemiring R] [Semiring A] [Semiring B] [Algebra R A]
-  [Algebra R B] extends RingHomClass F A B where
+class AlgHomClass (F : Type*) (R A B : outParam Type*)
+  [CommSemiring R] [Semiring A] [Semiring B] [Algebra R A] [Algebra R B]
+  [FunLike F A B] extends RingHomClass F A B : Prop where
   commutes : ∀ (f : F) (r : R), f (algebraMap R A r) = algebraMap R B r
 #align alg_hom_class AlgHomClass
 
@@ -63,7 +63,7 @@ class AlgHomClass (F : Type*) (R : outParam (Type*)) (A : outParam (Type*))
 namespace AlgHomClass
 
 variable {R : Type*} {A : Type*} {B : Type*} [CommSemiring R] [Semiring A] [Semiring B]
-  [Algebra R A] [Algebra R B]
+  [Algebra R A] [Algebra R B] [FunLike F A B]
 
 -- see Note [lower instance priority]
 instance (priority := 100) linearMapClass [AlgHomClass F R A B] : LinearMapClass F R A B :=
@@ -76,12 +76,12 @@ instance (priority := 100) linearMapClass [AlgHomClass F R A B] : LinearMapClass
 /-- Turn an element of a type `F` satisfying `AlgHomClass F α β` into an actual
 `AlgHom`. This is declared as the default coercion from `F` to `α →+* β`. -/
 @[coe]
-def toAlgHom {F : Type*} [AlgHomClass F R A B] (f : F) : A →ₐ[R] B :=
+def toAlgHom {F : Type*} [FunLike F A B] [AlgHomClass F R A B] (f : F) : A →ₐ[R] B :=
   { (f : A →+* B) with
       toFun := f
       commutes' := AlgHomClass.commutes f }
 
-instance coeTC {F : Type*} [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) :=
+instance coeTC {F : Type*} [FunLike F A B] [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) :=
   ⟨AlgHomClass.toAlgHom⟩
 #align alg_hom_class.alg_hom.has_coe_t AlgHomClass.coeTC
 
@@ -100,13 +100,15 @@ variable [Algebra R A] [Algebra R B] [Algebra R C] [Algebra R D]
 -- Porting note: we don't port specialized `CoeFun` instances if there is `DFunLike` instead
 #noalign alg_hom.has_coe_to_fun
 
--- Porting note: This instance is moved.
-instance algHomClass : AlgHomClass (A →ₐ[R] B) R A B where
+instance funLike : FunLike (A →ₐ[R] B) A B where
   coe f := f.toFun
   coe_injective' f g h := by
     rcases f with ⟨⟨⟨⟨_, _⟩, _⟩, _, _⟩, _⟩
     rcases g with ⟨⟨⟨⟨_, _⟩, _⟩, _, _⟩, _⟩
     congr
+
+-- Porting note: This instance is moved.
+instance algHomClass : AlgHomClass (A →ₐ[R] B) R A B where
   map_add f := f.map_add'
   map_zero f := f.map_zero'
   map_mul f := f.map_mul'
@@ -121,7 +123,8 @@ def Simps.apply {R : Type u} {α : Type v} {β : Type w} [CommSemiring R]
 initialize_simps_projections AlgHom (toFun → apply)
 
 @[simp]
-protected theorem coe_coe {F : Type*} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=
+protected theorem coe_coe {F : Type*} [FunLike F A B] [AlgHomClass F R A B] (f : F) :
+    ⇑(f : A →ₐ[R] B) = f :=
   rfl
 #align alg_hom.coe_coe AlgHom.coe_coe
 

This prepares for the introduction of a non-dependent synonym of FunLike, which helps a lot with keeping #8386 readable.

This is entirely search-and-replace in 680197f combined with manual fixes in 4145626, e900597 and b8428f8. The commands that generated this change:

sed -i 's/\bFunLike\b/DFunLike/g' {Archive,Counterexamples,Mathlib,test}/**/*.lean
sed -i 's/\btoFunLike\b/toDFunLike/g' {Archive,Counterexamples,Mathlib,test}/**/*.lean
sed -i 's/import Mathlib.Data.DFunLike/import Mathlib.Data.FunLike/g' {Archive,Counterexamples,Mathlib,test}/**/*.lean
sed -i 's/\bHom_FunLike\b/Hom_DFunLike/g' {Archive,Counterexamples,Mathlib,test}/**/*.lean     
sed -i 's/\binstFunLike\b/instDFunLike/g' {Archive,Counterexamples,Mathlib,test}/**/*.lean
sed -i 's/\bfunLike\b/instDFunLike/g' {Archive,Counterexamples,Mathlib,test}/**/*.lean
sed -i 's/\btoo many metavariables to apply `fun_like.has_coe_to_fun`/too many metavariables to apply `DFunLike.hasCoeToFun`/g' {Archive,Counterexamples,Mathlib,test}/**/*.lean

Co-authored-by: Anne Baanen <Vierkantor@users.noreply.github.com>

@@ -97,7 +97,7 @@ variable [CommSemiring R] [Semiring A] [Semiring B] [Semiring C] [Semiring D]
 
 variable [Algebra R A] [Algebra R B] [Algebra R C] [Algebra R D]
 
--- Porting note: we don't port specialized `CoeFun` instances if there is `FunLike` instead
+-- Porting note: we don't port specialized `CoeFun` instances if there is `DFunLike` instead
 #noalign alg_hom.has_coe_to_fun
 
 -- Porting note: This instance is moved.
@@ -192,11 +192,11 @@ theorem coe_toAddMonoidHom (f : A →ₐ[R] B) : ⇑(f : A →+ B) = f :=
 variable (φ : A →ₐ[R] B)
 
 theorem coe_fn_injective : @Function.Injective (A →ₐ[R] B) (A → B) (↑) :=
-  FunLike.coe_injective
+  DFunLike.coe_injective
 #align alg_hom.coe_fn_injective AlgHom.coe_fn_injective
 
 theorem coe_fn_inj {φ₁ φ₂ : A →ₐ[R] B} : (φ₁ : A → B) = φ₂ ↔ φ₁ = φ₂ :=
-  FunLike.coe_fn_eq
+  DFunLike.coe_fn_eq
 #align alg_hom.coe_fn_inj AlgHom.coe_fn_inj
 
 theorem coe_ringHom_injective : Function.Injective ((↑) : (A →ₐ[R] B) → A →+* B) := fun φ₁ φ₂ H =>
@@ -212,20 +212,20 @@ theorem coe_addMonoidHom_injective : Function.Injective ((↑) : (A →ₐ[R] B)
 #align alg_hom.coe_add_monoid_hom_injective AlgHom.coe_addMonoidHom_injective
 
 protected theorem congr_fun {φ₁ φ₂ : A →ₐ[R] B} (H : φ₁ = φ₂) (x : A) : φ₁ x = φ₂ x :=
-  FunLike.congr_fun H x
+  DFunLike.congr_fun H x
 #align alg_hom.congr_fun AlgHom.congr_fun
 
 protected theorem congr_arg (φ : A →ₐ[R] B) {x y : A} (h : x = y) : φ x = φ y :=
-  FunLike.congr_arg φ h
+  DFunLike.congr_arg φ h
 #align alg_hom.congr_arg AlgHom.congr_arg
 
 @[ext]
 theorem ext {φ₁ φ₂ : A →ₐ[R] B} (H : ∀ x, φ₁ x = φ₂ x) : φ₁ = φ₂ :=
-  FunLike.ext _ _ H
+  DFunLike.ext _ _ H
 #align alg_hom.ext AlgHom.ext
 
 theorem ext_iff {φ₁ φ₂ : A →ₐ[R] B} : φ₁ = φ₂ ↔ ∀ x, φ₁ x = φ₂ x :=
-  FunLike.ext_iff
+  DFunLike.ext_iff
 #align alg_hom.ext_iff AlgHom.ext_iff
 
 @[simp]
@@ -511,7 +511,7 @@ def toIntAlgHom [Ring R] [Ring S] [Algebra ℤ R] [Algebra ℤ S] (f : R →+* S
 
 lemma toIntAlgHom_injective [Ring R] [Ring S] [Algebra ℤ R] [Algebra ℤ S] :
     Function.Injective (RingHom.toIntAlgHom : (R →+* S) → _) :=
-  fun _ _ e ↦ FunLike.ext _ _ (fun x ↦ FunLike.congr_fun e x)
+  fun _ _ e ↦ DFunLike.ext _ _ (fun x ↦ DFunLike.congr_fun e x)
 
 /-- Reinterpret a `RingHom` as a `ℚ`-algebra homomorphism. This actually yields an equivalence,
 see `RingHom.equivRatAlgHom`. -/

Co-authored-by: Andrew Yang <36414270+erdOne@users.noreply.github.com>

@@ -509,6 +509,10 @@ def toIntAlgHom [Ring R] [Ring S] [Algebra ℤ R] [Algebra ℤ S] (f : R →+* S
   { f with commutes' := fun n => by simp }
 #align ring_hom.to_int_alg_hom RingHom.toIntAlgHom
 
+lemma toIntAlgHom_injective [Ring R] [Ring S] [Algebra ℤ R] [Algebra ℤ S] :
+    Function.Injective (RingHom.toIntAlgHom : (R →+* S) → _) :=
+  fun _ _ e ↦ FunLike.ext _ _ (fun x ↦ FunLike.congr_fun e x)
+
 /-- Reinterpret a `RingHom` as a `ℚ`-algebra homomorphism. This actually yields an equivalence,
 see `RingHom.equivRatAlgHom`. -/
 def toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S] (f : R →+* S) : R →ₐ[ℚ] S :=

@@ -570,6 +570,16 @@ instance subsingleton_id : Subsingleton (R →ₐ[R] A) :=
 @[ext high]
 theorem ext_id (f g : R →ₐ[R] A) : f = g := Subsingleton.elim _ _
 
+section MulDistribMulAction
+
+instance : MulDistribMulAction (A →ₐ[R] A) Aˣ where
+  smul := fun f => Units.map f
+  one_smul := fun x => by ext; rfl
+  mul_smul := fun x y z => by ext; rfl
+  smul_mul := fun x y z => by ext; exact x.map_mul _ _
+  smul_one := fun x => by ext; exact x.map_one
+
+end MulDistribMulAction
 end Algebra
 
 namespace MulSemiringAction

This reduces the file from ~2600 lines to ~1600 lines.

Co-authored-by: Vierkantor <vierkantor@vierkantor.com> Co-authored-by: Floris van Doorn <fpvdoorn@gmail.com>

@@ -4,6 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Yury Kudryashov
 -/
 import Mathlib.Algebra.Algebra.Basic
+import Mathlib.Algebra.BigOperators.Finsupp
 
 #align_import algebra.algebra.hom from "leanprover-community/mathlib"@"e97cf15cd1aec9bd5c193b2ffac5a6dc9118912b"
 

This caused a few downstream proofs to fail with "no goals", forcing them to be golfed!

@@ -561,6 +561,14 @@ theorem ofId_apply (r) : ofId R A r = algebraMap R A r :=
   rfl
 #align algebra.of_id_apply Algebra.ofId_apply
 
+/-- This is a special case of a more general instance that we define in a later file. -/
+instance subsingleton_id : Subsingleton (R →ₐ[R] A) :=
+  ⟨fun f g => AlgHom.ext fun _ => (f.commutes _).trans (g.commutes _).symm⟩
+
+/-- This ext lemma closes trivial subgoals create when chaining heterobasic ext lemmas. -/
+@[ext high]
+theorem ext_id (f g : R →ₐ[R] A) : f = g := Subsingleton.elim _ _
+
 end Algebra
 
 namespace MulSemiringAction

We have turned to Type* instead of Type _, but many of them remained in mathlib because the straight replacement did not work. In general, having Type _ before the colon is a code smell, though, as it hides which types should be in the same universe and which shouldn't, and is not very robust.

This PR replaces most of the remaining Type _ before the colon (except those in category theory) by Type* or Type u. This has uncovered a few bugs (where declarations were not as polymorphic as they should be).

I had to increase heartbeats at two places when replacing Type _ by Type*, but I think it's worth it as it's really more robust.

@@ -114,7 +114,7 @@ instance algHomClass : AlgHomClass (A →ₐ[R] B) R A B where
 #align alg_hom.alg_hom_class AlgHom.algHomClass
 
 /-- See Note [custom simps projection] -/
-def Simps.apply {R α β : Type _} [CommSemiring R]
+def Simps.apply {R : Type u} {α : Type v} {β : Type w} [CommSemiring R]
     [Semiring α] [Semiring β] [Algebra R α] [Algebra R β] (f : α →ₐ[R] β) : α → β := f
 
 initialize_simps_projections AlgHom (toFun → apply)

Autoimplicits are highly controversial and also defeat the performance-improving work in #6474.

The intent of this PR is to make autoImplicit opt-in on a per-file basis, by disabling it in the lakefile and enabling it again with set_option autoImplicit true in the few files that rely on it.

That also keeps this PR small, as opposed to attempting to "fix" files to not need it any more.

I claim that many of the uses of autoImplicit in these files are accidental; situations such as:

• Assuming variables are in scope, but pasting the lemma in the wrong section
• Pasting in a lemma from a scratch file without checking to see if the variable names are consistent with the rest of the file
• Making a copy-paste error between lemmas and forgetting to add an explicit arguments.

Having set_option autoImplicit false as the default prevents these types of mistake being made in the 90% of files where autoImplicits are not used at all, and causes them to be caught by CI during review.

I think there were various points during the port where we encouraged porters to delete the universes u v lines; I think having autoparams for universe variables only would cover a lot of the cases we actually use them, while avoiding any real shortcomings.

A Zulip poll (after combining overlapping votes accordingly) was in favor of this change with 5:5:18 as the no:dontcare:yes vote ratio.

While this PR was being reviewed, a handful of files gained some more likely-accidental autoImplicits. In these places, set_option autoImplicit true has been placed locally within a section, rather than at the top of the file.

@@ -22,6 +22,8 @@ This file defines bundled homomorphisms of `R`-algebras.
 * `A →ₐ[R] B` : `R`-algebra homomorphism from `A` to `B`.
 -/
 
+set_option autoImplicit true
+
 
 open BigOperators
 

We remove all possible occurences of Type _ and Sort _ in favor of Type* and Sort*.

This has nice performance benefits.

@@ -45,8 +45,8 @@ notation:25 A " →ₐ[" R "] " B => AlgHom R A B
 
 /-- `AlgHomClass F R A B` asserts `F` is a type of bundled algebra homomorphisms
 from `A` to `B`.  -/
-class AlgHomClass (F : Type _) (R : outParam (Type _)) (A : outParam (Type _))
-  (B : outParam (Type _)) [CommSemiring R] [Semiring A] [Semiring B] [Algebra R A]
+class AlgHomClass (F : Type*) (R : outParam (Type*)) (A : outParam (Type*))
+  (B : outParam (Type*)) [CommSemiring R] [Semiring A] [Semiring B] [Algebra R A]
   [Algebra R B] extends RingHomClass F A B where
   commutes : ∀ (f : F) (r : R), f (algebraMap R A r) = algebraMap R B r
 #align alg_hom_class AlgHomClass
@@ -59,7 +59,7 @@ class AlgHomClass (F : Type _) (R : outParam (Type _)) (A : outParam (Type _))
 
 namespace AlgHomClass
 
-variable {R : Type _} {A : Type _} {B : Type _} [CommSemiring R] [Semiring A] [Semiring B]
+variable {R : Type*} {A : Type*} {B : Type*} [CommSemiring R] [Semiring A] [Semiring B]
   [Algebra R A] [Algebra R B]
 
 -- see Note [lower instance priority]
@@ -73,12 +73,12 @@ instance (priority := 100) linearMapClass [AlgHomClass F R A B] : LinearMapClass
 /-- Turn an element of a type `F` satisfying `AlgHomClass F α β` into an actual
 `AlgHom`. This is declared as the default coercion from `F` to `α →+* β`. -/
 @[coe]
-def toAlgHom {F : Type _} [AlgHomClass F R A B] (f : F) : A →ₐ[R] B :=
+def toAlgHom {F : Type*} [AlgHomClass F R A B] (f : F) : A →ₐ[R] B :=
   { (f : A →+* B) with
       toFun := f
       commutes' := AlgHomClass.commutes f }
 
-instance coeTC {F : Type _} [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) :=
+instance coeTC {F : Type*} [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) :=
   ⟨AlgHomClass.toAlgHom⟩
 #align alg_hom_class.alg_hom.has_coe_t AlgHomClass.coeTC
 
@@ -118,7 +118,7 @@ def Simps.apply {R α β : Type _} [CommSemiring R]
 initialize_simps_projections AlgHom (toFun → apply)
 
 @[simp]
-protected theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=
+protected theorem coe_coe {F : Type*} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=
   rfl
 #align alg_hom.coe_coe AlgHom.coe_coe
 
@@ -264,12 +264,12 @@ protected theorem map_smul (r : R) (x : A) : φ (r • x) = r • φ x :=
   map_smul _ _ _
 #align alg_hom.map_smul AlgHom.map_smul
 
-protected theorem map_sum {ι : Type _} (f : ι → A) (s : Finset ι) :
+protected theorem map_sum {ι : Type*} (f : ι → A) (s : Finset ι) :
     φ (∑ x in s, f x) = ∑ x in s, φ (f x) :=
   map_sum _ _ _
 #align alg_hom.map_sum AlgHom.map_sum
 
-protected theorem map_finsupp_sum {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
+protected theorem map_finsupp_sum {α : Type*} [Zero α] {ι : Type*} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.sum g) = f.sum fun i a => φ (g i a) :=
   map_finsupp_sum _ _ _
 #align alg_hom.map_finsupp_sum AlgHom.map_finsupp_sum
@@ -460,12 +460,12 @@ protected theorem map_multiset_prod (s : Multiset A) : φ s.prod = (s.map φ).pr
   map_multiset_prod _ _
 #align alg_hom.map_multiset_prod AlgHom.map_multiset_prod
 
-protected theorem map_prod {ι : Type _} (f : ι → A) (s : Finset ι) :
+protected theorem map_prod {ι : Type*} (f : ι → A) (s : Finset ι) :
     φ (∏ x in s, f x) = ∏ x in s, φ (f x) :=
   map_prod _ _ _
 #align alg_hom.map_prod AlgHom.map_prod
 
-protected theorem map_finsupp_prod {α : Type _} [Zero α] {ι : Type _} (f : ι →₀ α) (g : ι → α → A) :
+protected theorem map_finsupp_prod {α : Type*} [Zero α] {ι : Type*} (f : ι →₀ α) (g : ι → α → A) :
     φ (f.prod g) = f.prod fun i a => φ (g i a) :=
   map_finsupp_prod _ _ _
 #align alg_hom.map_finsupp_prod AlgHom.map_finsupp_prod
@@ -492,7 +492,7 @@ end AlgHom
 
 namespace RingHom
 
-variable {R S : Type _}
+variable {R S : Type*}
 
 /-- Reinterpret a `RingHom` as an `ℕ`-algebra homomorphism. -/
 def toNatAlgHom [Semiring R] [Semiring S] (f : R →+* S) : R →ₐ[ℕ] S :=
@@ -522,7 +522,7 @@ end RingHom
 
 section
 
-variable {R S : Type _}
+variable {R S : Type*}
 
 @[simp]
 theorem AlgHom.toRingHom_toRatAlgHom [Ring R] [Ring S] [Algebra ℚ R] [Algebra ℚ S]
@@ -563,7 +563,7 @@ end Algebra
 
 namespace MulSemiringAction
 
-variable {M G : Type _} (R A : Type _) [CommSemiring R] [Semiring A] [Algebra R A]
+variable {M G : Type*} (R A : Type*) [CommSemiring R] [Semiring A] [Algebra R A]
 
 variable [Monoid M] [MulSemiringAction M A] [SMulCommClass M R A]
 

• depends on: #5966

Co-authored-by: Eric Wieser <wieser.eric@gmail.com> Co-authored-by: Scott Morrison <scott.morrison@gmail.com>

@@ -2,14 +2,11 @@
 Copyright (c) 2018 Kenny Lau. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Kenny Lau, Yury Kudryashov
-
-! This file was ported from Lean 3 source module algebra.algebra.hom
-! leanprover-community/mathlib commit e97cf15cd1aec9bd5c193b2ffac5a6dc9118912b
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.Algebra.Basic
 
+#align_import algebra.algebra.hom from "leanprover-community/mathlib"@"e97cf15cd1aec9bd5c193b2ffac5a6dc9118912b"
+
 /-!
 # Homomorphisms of `R`-algebras
 

All of these are doc fixes

@@ -570,7 +570,7 @@ variable {M G : Type _} (R A : Type _) [CommSemiring R] [Semiring A] [Algebra R
 
 variable [Monoid M] [MulSemiringAction M A] [SMulCommClass M R A]
 
-/-- Each element of the monoid defines a algebra homomorphism.
+/-- Each element of the monoid defines an algebra homomorphism.
 
 This is a stronger version of `MulSemiringAction.toRingHom` and
 `DistribMulAction.toLinearMap`. -/

Co-authored-by: Scott Morrison <scott.morrison@anu.edu.au> Co-authored-by: Parcly Taxel <reddeloostw@gmail.com>

@@ -77,9 +77,9 @@ instance (priority := 100) linearMapClass [AlgHomClass F R A B] : LinearMapClass
 `AlgHom`. This is declared as the default coercion from `F` to `α →+* β`. -/
 @[coe]
 def toAlgHom {F : Type _} [AlgHomClass F R A B] (f : F) : A →ₐ[R] B :=
-{ (f : A →+* B) with
-    toFun := f
-    commutes' := AlgHomClass.commutes f }
+  { (f : A →+* B) with
+      toFun := f
+      commutes' := AlgHomClass.commutes f }
 
 instance coeTC {F : Type _} [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) :=
   ⟨AlgHomClass.toAlgHom⟩

@@ -495,9 +495,6 @@ end AlgHom
 
 namespace RingHom
 
--- Porting note: TODO Erase this line. Needed because we don't have η for classes. (lean4#2074)
-attribute [-instance] Ring.toNonAssocRing
-
 variable {R S : Type _}
 
 /-- Reinterpret a `RingHom` as an `ℕ`-algebra homomorphism. -/
@@ -509,18 +506,7 @@ def toNatAlgHom [Semiring R] [Semiring S] (f : R →+* S) : R →ₐ[ℕ] S :=
 
 /-- Reinterpret a `RingHom` as a `ℤ`-algebra homomorphism. -/
 def toIntAlgHom [Ring R] [Ring S] [Algebra ℤ R] [Algebra ℤ S] (f : R →+* S) : R →ₐ[ℤ] S :=
-  { f with
-    commutes' := fun n => by
-      -- Porting note: TODO Erase these `have`s.
-      --               Needed because we don't have η for classes. (lean4#2074)
-      have e₁ : algebraMap ℤ R n = n :=
-        @eq_intCast _ R Ring.toNonAssocRing RingHom.instRingHomClassRingHom (algebraMap ℤ R) n
-      have e₂ : algebraMap ℤ S n = n :=
-        @eq_intCast _ S Ring.toNonAssocRing RingHom.instRingHomClassRingHom (algebraMap ℤ S) n
-      have e₃ : f n = n :=
-        @map_intCast _ R S Ring.toNonAssocRing Ring.toNonAssocRing RingHom.instRingHomClassRingHom
-          f n
-      simp [e₁, e₂, e₃] }
+  { f with commutes' := fun n => by simp }
 #align ring_hom.to_int_alg_hom RingHom.toIntAlgHom
 
 /-- Reinterpret a `RingHom` as a `ℚ`-algebra homomorphism. This actually yields an equivalence,
@@ -539,9 +525,6 @@ end RingHom
 
 section
 
--- Porting note: TODO Erase this line. Needed because we don't have η for classes. (lean4#2074)
-attribute [-instance] Ring.toNonAssocRing
-
 variable {R S : Type _}
 
 @[simp]

@@ -65,11 +65,8 @@ namespace AlgHomClass
 variable {R : Type _} {A : Type _} {B : Type _} [CommSemiring R] [Semiring A] [Semiring B]
   [Algebra R A] [Algebra R B]
 
--- Porting note: marked `{}` rather than `[]` to prevent dangerous instances
 -- see Note [lower instance priority]
-instance (priority := 100) linearMapClass {_ : CommSemiring R} {_ : Semiring A} {_ : Semiring B}
-    {_ : Algebra R A} {_ : Algebra R B} {F : Type _} [AlgHomClass F R A B] :
-    LinearMapClass F R A B :=
+instance (priority := 100) linearMapClass [AlgHomClass F R A B] : LinearMapClass F R A B :=
   { ‹AlgHomClass F R A B› with
     map_smulₛₗ := fun f r x => by
       simp only [Algebra.smul_def, map_mul, commutes, RingHom.id_apply] }

• Also fix the configuration option Simps.Config.lemmasOnly and use it in the library
• Also use @[simps!] in the test file
• Also remove the temporary configuration in LocalHomeomorph
• Zulip thread
• Fixes #2350

@@ -430,7 +430,7 @@ theorem map_list_prod (s : List A) : φ s.prod = (s.map φ).prod :=
   φ.toRingHom.map_list_prod s
 #align alg_hom.map_list_prod AlgHom.map_list_prod
 
-@[simps (config := { attrs := [] }) toSemigroup_toMul_mul toOne_one]
+@[simps (config := .lemmasOnly) toSemigroup_toMul_mul toOne_one]
 instance End : Monoid (A →ₐ[R] A) where
   mul := comp
   mul_assoc ϕ ψ χ := rfl

@@ -75,11 +75,17 @@ instance (priority := 100) linearMapClass {_ : CommSemiring R} {_ : Semiring A}
       simp only [Algebra.smul_def, map_mul, commutes, RingHom.id_apply] }
 #align alg_hom_class.linear_map_class AlgHomClass.linearMapClass
 
-instance coeTC {F : Type _} [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) where
-  coe f :=
-  { (f : A →+* B) with
+-- Porting note: A new definition underlying a coercion `↑`.
+/-- Turn an element of a type `F` satisfying `AlgHomClass F α β` into an actual
+`AlgHom`. This is declared as the default coercion from `F` to `α →+* β`. -/
+@[coe]
+def toAlgHom {F : Type _} [AlgHomClass F R A B] (f : F) : A →ₐ[R] B :=
+{ (f : A →+* B) with
     toFun := f
     commutes' := AlgHomClass.commutes f }
+
+instance coeTC {F : Type _} [AlgHomClass F R A B] : CoeTC F (A →ₐ[R] B) :=
+  ⟨AlgHomClass.toAlgHom⟩
 #align alg_hom_class.alg_hom.has_coe_t AlgHomClass.coeTC
 
 end AlgHomClass

• Some of the older ones do exactly the same as the shorter new ones
• Also update doc (some remarks are only true after #2045 is merged)

@@ -115,7 +115,7 @@ instance algHomClass : AlgHomClass (A →ₐ[R] B) R A B where
 def Simps.apply {R α β : Type _} [CommSemiring R]
     [Semiring α] [Semiring β] [Algebra R α] [Algebra R β] (f : α →ₐ[R] β) : α → β := f
 
-initialize_simps_projections AlgHom (toRingHom_toMonoidHom_toOneHom_toFun → apply)
+initialize_simps_projections AlgHom (toFun → apply)
 
 @[simp]
 protected theorem coe_coe {F : Type _} [AlgHomClass F R A B] (f : F) : ⇑(f : A →ₐ[R] B) = f :=

@@ -40,10 +40,10 @@ structure AlgHom (R : Type u) (A : Type v) (B : Type w) [CommSemiring R] [Semiri
 /-- Reinterpret an `AlgHom` as a `RingHom` -/
 add_decl_doc AlgHom.toRingHom
 
--- mathport name: «expr →ₐ »
+@[inherit_doc AlgHom]
 infixr:25 " →ₐ " => AlgHom _
 
--- mathport name: «expr →ₐ[ ] »
+@[inherit_doc]
 notation:25 A " →ₐ[" R "] " B => AlgHom R A B
 
 /-- `AlgHomClass F R A B` asserts `F` is a type of bundled algebra homomorphisms

Co-authored-by: Johan Commelin <johan@commelin.net>