algebra.direct_sum.finsupp | Mathlib porting status

Changes since the initial port

The following section lists changes to this file in mathlib3 and mathlib4 that occured after the initial port. Most recent changes are shown first. Hovering over a commit will show all commits associated with the same mathlib3 commit.

Changes in mathlib3

aca0874a

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

aa3a4205

bump to nightly-2024-04-06-08

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

e34029c9

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Johannes Hölzl
 -/
 import Algebra.DirectSum.Module
-import Data.Finsupp.ToDfinsupp
+import Data.Finsupp.ToDFinsupp
 
 #align_import algebra.direct_sum.finsupp from "leanprover-community/mathlib"@"aa3a420527e0fbfd0f6615b95b761254a9166e12"

aa3a4205

bump to nightly-2023-09-24-06

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

5655435f

Diff

@@ -3,8 +3,8 @@ Copyright (c) 2019 Johannes Hölzl. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Johannes Hölzl
 -/
-import Mathbin.Algebra.DirectSum.Module
-import Mathbin.Data.Finsupp.ToDfinsupp
+import Algebra.DirectSum.Module
+import Data.Finsupp.ToDfinsupp
 
 #align_import algebra.direct_sum.finsupp from "leanprover-community/mathlib"@"aa3a420527e0fbfd0f6615b95b761254a9166e12"

aa3a4205

bump to nightly-2023-07-20-09

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

9c56d0dd

Diff

@@ -2,15 +2,12 @@
 Copyright (c) 2019 Johannes Hölzl. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Johannes Hölzl
-
-! This file was ported from Lean 3 source module algebra.direct_sum.finsupp
-! leanprover-community/mathlib commit aa3a420527e0fbfd0f6615b95b761254a9166e12
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Algebra.DirectSum.Module
 import Mathbin.Data.Finsupp.ToDfinsupp
 
+#align_import algebra.direct_sum.finsupp from "leanprover-community/mathlib"@"aa3a420527e0fbfd0f6615b95b761254a9166e12"
+
 /-!
 # Results on direct sums and finitely supported functions.

aa3a4205

bump to nightly-2023-07-12-07

mathlib commit https://github.com/leanprover-community/mathlib/commit/4e24c4bfcff371c71f7ba22050308aa17815626c

9849f9d1

Diff

@@ -41,7 +41,7 @@ variable (R M) (ι : Type _) [DecidableEq ι]
 copies of M indexed by ι. -/
 def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
   haveI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
-  finsuppLequivDfinsupp R
+  finsuppLequivDFinsupp R
 #align finsupp_lequiv_direct_sum finsuppLEquivDirectSum
 -/
 
@@ -49,7 +49,7 @@ def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
 @[simp]
 theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
     finsuppLEquivDirectSum R M ι (Finsupp.single i m) = DirectSum.lof R ι _ i m :=
-  Finsupp.toDfinsupp_single i m
+  Finsupp.toDFinsupp_single i m
 #align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_single
 -/
 
@@ -58,7 +58,7 @@ theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
 theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :
     (finsuppLEquivDirectSum R M ι).symm (DirectSum.lof R ι _ i m) = Finsupp.single i m :=
   letI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
-  Dfinsupp.toFinsupp_single i m
+  DFinsupp.toFinsupp_single i m
 #align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lof
 -/

aa3a4205

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -36,25 +36,31 @@ section finsuppLEquivDirectSum
 
 variable (R M) (ι : Type _) [DecidableEq ι]
 
+#print finsuppLEquivDirectSum /-
 /-- The finitely supported functions `ι →₀ M` are in linear equivalence with the direct sum of
 copies of M indexed by ι. -/
 def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
   haveI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
   finsuppLequivDfinsupp R
 #align finsupp_lequiv_direct_sum finsuppLEquivDirectSum
+-/
 
+#print finsuppLEquivDirectSum_single /-
 @[simp]
 theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
     finsuppLEquivDirectSum R M ι (Finsupp.single i m) = DirectSum.lof R ι _ i m :=
   Finsupp.toDfinsupp_single i m
 #align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_single
+-/
 
+#print finsuppLEquivDirectSum_symm_lof /-
 @[simp]
 theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :
     (finsuppLEquivDirectSum R M ι).symm (DirectSum.lof R ι _ i m) = Finsupp.single i m :=
   letI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
   Dfinsupp.toFinsupp_single i m
 #align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lof
+-/
 
 end finsuppLEquivDirectSum

aa3a4205

bump to nightly-2023-05-28-18

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

8d353152

Diff

@@ -26,7 +26,7 @@ universe u v w
 
 noncomputable section
 
-open DirectSum
+open scoped DirectSum
 
 open LinearMap Submodule

aa3a4205

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -36,12 +36,6 @@ section finsuppLEquivDirectSum
 
 variable (R M) (ι : Type _) [DecidableEq ι]
 
-/- warning: finsupp_lequiv_direct_sum -> finsuppLEquivDirectSum is a dubious translation:
-lean 3 declaration is
-  forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι], LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))
-but is expected to have type
-  forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι], LinearEquiv.{u1, u1, max u2 u3, max u2 u3} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHomInvPair.ids.{u1} R (Ring.toSemiring.{u1} R _inst_1)) (RingHomInvPair.ids.{u1} R (Ring.toSemiring.{u1} R _inst_1)) (Finsupp.{u3, u2} ι M (NegZeroClass.toZero.{u2} M (SubNegZeroMonoid.toNegZeroClass.{u2} M (SubtractionMonoid.toSubNegZeroMonoid.{u2} M (SubtractionCommMonoid.toSubtractionMonoid.{u2} M (AddCommGroup.toDivisionAddCommMonoid.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (instAddCommMonoidDirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))
-Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum finsuppLEquivDirectSumₓ'. -/
 /-- The finitely supported functions `ι →₀ M` are in linear equivalence with the direct sum of
 copies of M indexed by ι. -/
 def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
@@ -49,18 +43,12 @@ def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
   finsuppLequivDfinsupp R
 #align finsupp_lequiv_direct_sum finsuppLEquivDirectSum
 
-/- warning: finsupp_lequiv_direct_sum_single -> finsuppLEquivDirectSum_single is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_singleₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
     finsuppLEquivDirectSum R M ι (Finsupp.single i m) = DirectSum.lof R ι _ i m :=
   Finsupp.toDfinsupp_single i m
 #align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_single
 
-/- warning: finsupp_lequiv_direct_sum_symm_lof -> finsuppLEquivDirectSum_symm_lof is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lofₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :
     (finsuppLEquivDirectSum R M ι).symm (DirectSum.lof R ι _ i m) = Finsupp.single i m :=

aa3a4205

bump to nightly-2023-05-28-03

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

6c6011cf

Diff

@@ -50,10 +50,7 @@ def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
 #align finsupp_lequiv_direct_sum finsuppLEquivDirectSum
 
 /- warning: finsupp_lequiv_direct_sum_single -> finsuppLEquivDirectSum_single is a dubious translation:
-lean 3 declaration is
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(AddCommGroup.toAddGroup.{u2} M _inst_2)))))) -> (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2))) (LinearEquiv.hasCoeToFun.{u1, u1, max u3 u2, max u3 u2} R R (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1)) (finsuppLEquivDirectSum.{u1, u2, u3} R M _inst_1 _inst_2 _inst_3 ι (fun (a : ι) (b : ι) => _inst_4 a b)) (Finsupp.single.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2))))) i m)) (coeFn.{max (succ u2) (succ (max u3 u2)), max (succ u2) (succ (max u3 u2))} (LinearMap.{u1, u1, u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) M (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => 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+<too large>
 Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_singleₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
@@ -62,10 +59,7 @@ theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
 #align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_single
 
 /- warning: finsupp_lequiv_direct_sum_symm_lof -> finsuppLEquivDirectSum_symm_lof is a dubious translation:
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ι) => M) i) _inst_2)) _inst_3 (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1)))) (DirectSum.lof.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (a : ι) (b : ι) => _inst_4 a b) (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3) i) m)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)
+<too large>
 Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lofₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :

aa3a4205

bump to nightly-2023-05-24-06

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

fbc7b476

Diff

@@ -53,7 +53,7 @@ def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
 lean 3 declaration is
   forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι] (i : ι) (m : M), Eq.{succ (max u3 u2)} (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (coeFn.{succ (max u3 u2), succ (max u3 u2)} (LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) (fun (_x : LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) => (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) -> (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2))) (LinearEquiv.hasCoeToFun.{u1, u1, max u3 u2, max u3 u2} R R (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1)) (finsuppLEquivDirectSum.{u1, u2, u3} R M _inst_1 _inst_2 _inst_3 ι (fun (a : ι) (b : ι) => _inst_4 a b)) (Finsupp.single.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2))))) i m)) (coeFn.{max (succ u2) (succ (max u3 u2)), max (succ u2) (succ (max u3 u2))} (LinearMap.{u1, u1, u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) M (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) _inst_3 (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) (fun (_x : LinearMap.{u1, u1, u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) M (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) _inst_3 (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) => M -> (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2))) (LinearMap.hasCoeToFun.{u1, u1, u2, max u3 u2} R R M (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) _inst_3 (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1)))) (DirectSum.lof.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (a : ι) (b : ι) => _inst_4 a b) (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3) i) m)
 but is expected to have type
-  forall (R : Type.{u2}) (M : Type.{u3}) [_inst_1 : Ring.{u2} R] [_inst_2 : AddCommGroup.{u3} M] [_inst_3 : Module.{u2, u3} R M (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)] (ι : Type.{u1}) [_inst_4 : DecidableEq.{succ u1} ι] (i : ι) (m : M), Eq.{max (succ u3) (succ u1)} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) => DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)) (FunLike.coe.{max (succ u3) (succ u1), max (succ u3) (succ u1), max (succ u3) (succ u1)} (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (fun (_x : Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) => DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _x) (SMulHomClass.toFunLike.{max u3 u1, u2, max u3 u1, max u3 u1} (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} 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u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{max u3 u1} (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2))) (AddCommMonoid.toAddMonoid.{max u3 u1} (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2))) (Module.toDistribMulAction.{u2, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) (Module.toDistribMulAction.{u2, max u3 u1} R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Ring.toSemiring.{u2} R _inst_1) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (SemilinearMapClass.distribMulActionHomClass.{u2, max u3 u1, max u3 u1, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (SemilinearEquivClass.instSemilinearMapClass.{u2, u2, max u3 u1, max u3 u1, max u3 u1} R R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (LinearEquiv.instSemilinearEquivClassLinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1))))))) (finsuppLEquivDirectSum.{u2, u3, u1} R M _inst_1 _inst_2 _inst_3 ι (fun (a : ι) (b : ι) => _inst_4 a b)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)) (FunLike.coe.{max (succ u1) (succ u3), succ u3, max (succ u1) (succ u3)} (LinearMap.{u2, u2, u3, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) M (DirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _inst_3 (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) M (fun (_x : M) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6193 : M) => DirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _x) (LinearMap.instFunLikeLinearMap.{u2, u2, u3, max u1 u3} R R M (DirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _inst_3 (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1)))) (DirectSum.lof.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (a : ι) (b : ι) => _inst_4 a b) (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3) i) m)
 Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_singleₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
@@ -65,7 +65,7 @@ theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
 lean 3 declaration is
   forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι] (i : ι) (m : M), Eq.{max (succ u3) (succ u2)} (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (coeFn.{succ (max u3 u2), succ (max u3 u2)} (LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => 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 but is expected to have type
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AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (SMulZeroClass.toSMul.{u2, max u3 u1} R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => 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_inst_1) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)))))) (SMulZeroClass.toSMul.{u2, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (AddMonoid.toZero.{max u3 u1} (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (AddCommMonoid.toAddMonoid.{max u3 u1} 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(AddCommGroup.toAddCommMonoid.{u3} M _inst_2))) (Module.toDistribMulAction.{u2, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u1, u2, max u3 u1, max u3 u1} (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{max u3 u1} (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2))) (AddCommMonoid.toAddMonoid.{max u3 u1} (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M 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M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) (SemilinearMapClass.distribMulActionHomClass.{u2, max u3 u1, max u3 u1, max u3 u1} R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) (Ring.toSemiring.{u2} R _inst_1) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (SemilinearEquivClass.instSemilinearMapClass.{u2, u2, max u3 u1, max u3 u1, max u3 u1} R R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) 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ι) => M) i) _inst_2)) _inst_3 (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1)))) (DirectSum.lof.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (a : ι) (b : ι) => _inst_4 a b) (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3) i) m)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)
 Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lofₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :

aa3a4205

bump to nightly-2023-05-18-03

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

b46e9d53

Diff

@@ -53,7 +53,7 @@ def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
 lean 3 declaration is
   forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι] (i : ι) (m : M), Eq.{succ (max u3 u2)} (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (coeFn.{succ (max u3 u2), succ (max u3 u2)} (LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) (fun (_x : LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) => (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) -> (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2))) (LinearEquiv.hasCoeToFun.{u1, u1, max u3 u2, max u3 u2} R R (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1)) (finsuppLEquivDirectSum.{u1, u2, u3} R M _inst_1 _inst_2 _inst_3 ι (fun (a : ι) (b : ι) => _inst_4 a b)) (Finsupp.single.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2))))) i m)) (coeFn.{max (succ u2) (succ (max u3 u2)), max (succ u2) (succ (max u3 u2))} (LinearMap.{u1, u1, u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) M (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) _inst_3 (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) (fun (_x : LinearMap.{u1, u1, u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) M (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) _inst_3 (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))) => M -> (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2))) (LinearMap.hasCoeToFun.{u1, u1, u2, max u3 u2} R R M (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) _inst_3 (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1)))) (DirectSum.lof.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (a : ι) (b : ι) => _inst_4 a b) (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3) i) m)
 but is expected to have type
-  forall (R : Type.{u2}) (M : Type.{u3}) [_inst_1 : Ring.{u2} R] [_inst_2 : AddCommGroup.{u3} M] [_inst_3 : Module.{u2, u3} R M (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)] (ι : Type.{u1}) [_inst_4 : DecidableEq.{succ u1} ι] (i : ι) (m : M), Eq.{max (succ u3) (succ u1)} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) => DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)) (FunLike.coe.{max (succ u3) (succ u1), max (succ u3) (succ u1), max (succ u3) (succ u1)} (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (fun (_x : Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) => (fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) => DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _x) (SMulHomClass.toFunLike.{max u3 u1, u2, max u3 u1, max u3 u1} (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} 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(Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{max u3 u1} (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2))) (AddCommMonoid.toAddMonoid.{max u3 u1} (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2))) (Module.toDistribMulAction.{u2, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) (Module.toDistribMulAction.{u2, max u3 u1} R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Ring.toSemiring.{u2} R _inst_1) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (SemilinearMapClass.distribMulActionHomClass.{u2, max u3 u1, max u3 u1, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (SemilinearEquivClass.instSemilinearMapClass.{u2, u2, max u3 u1, max u3 u1, max u3 u1} R R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (LinearEquiv.instSemilinearEquivClassLinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1))))))) (finsuppLEquivDirectSum.{u2, u3, u1} R M _inst_1 _inst_2 _inst_3 ι (fun (a : ι) (b : ι) => _inst_4 a b)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)) (FunLike.coe.{max (succ u1) (succ u3), succ u3, max (succ u1) (succ u3)} (LinearMap.{u2, u2, u3, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) M (DirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _inst_3 (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))) M (fun (_x : M) => (fun (x._@.Mathlib.Algebra.Module.LinearMap._hyg.6191 : M) => DirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _x) (LinearMap.instFunLikeLinearMap.{u2, u2, u3, max u1 u3} R R M (DirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) _inst_3 (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1)))) (DirectSum.lof.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (a : ι) (b : ι) => _inst_4 a b) (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3) i) m)
 Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_singleₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
@@ -65,7 +65,7 @@ theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
 lean 3 declaration is
   forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι] (i : ι) (m : M), Eq.{max (succ u3) (succ u2)} (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (coeFn.{succ (max u3 u2), succ (max u3 u2)} (LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => 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 but is expected to have type
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AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (SMulZeroClass.toSMul.{u2, max u3 u1} R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => 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_inst_1) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)))))) (SMulZeroClass.toSMul.{u2, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (AddMonoid.toZero.{max u3 u1} (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (AddCommMonoid.toAddMonoid.{max u3 u1} 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(AddCommGroup.toAddCommMonoid.{u3} M _inst_2))) (Module.toDistribMulAction.{u2, max u3 u1} R (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3))))) (DistribMulActionHomClass.toSMulHomClass.{max u3 u1, u2, max u3 u1, max u3 u1} (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (MonoidWithZero.toMonoid.{u2} R (Semiring.toMonoidWithZero.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (AddCommMonoid.toAddMonoid.{max u3 u1} (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2))) (AddCommMonoid.toAddMonoid.{max u3 u1} (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M 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M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (Ring.toSemiring.{u2} R _inst_1) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) (SemilinearMapClass.distribMulActionHomClass.{u2, max u3 u1, max u3 u1, max u3 u1} R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (LinearEquiv.{u2, u2, max u3 u1, max u3 u1} R R (Ring.toSemiring.{u2} R _inst_1) (Ring.toSemiring.{u2} R _inst_1) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1))) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (RingHomInvPair.ids.{u2} R (Ring.toSemiring.{u2} R _inst_1)) (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3)) (Ring.toSemiring.{u2} R _inst_1) (instAddCommMonoidDirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u1, u3} ι M (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (Finsupp.module.{u1, u3, u2} ι M R (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2) _inst_3) (SemilinearEquivClass.instSemilinearMapClass.{u2, u2, max u3 u1, max u3 u1, max u3 u1} R R (DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) 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ι) => M) i) _inst_2)) _inst_3 (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3)) (RingHom.id.{u2} R (Semiring.toNonAssocSemiring.{u2} R (Ring.toSemiring.{u2} R _inst_1)))) (DirectSum.lof.{u2, u1, u3} R (Ring.toSemiring.{u2} R _inst_1) ι (fun (a : ι) (b : ι) => _inst_4 a b) (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3) i) m)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)
 Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lofₓ'. -/
 @[simp]
 theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :

aa3a4205

bump to nightly-2023-03-22-02

mathlib commit https://github.com/leanprover-community/mathlib/commit/dd6388c44e6f6b4547070b887c5905d5cfe6c9f8

2e6ecab9

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Johannes Hölzl
 
 ! This file was ported from Lean 3 source module algebra.direct_sum.finsupp
-! leanprover-community/mathlib commit aca0874a9ce95510752f4075f80f273172e9b177
+! leanprover-community/mathlib commit aa3a420527e0fbfd0f6615b95b761254a9166e12
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -14,6 +14,9 @@ import Mathbin.Data.Finsupp.ToDfinsupp
 /-!
 # Results on direct sums and finitely supported functions.
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 1. The linear equivalence between finitely supported functions `ι →₀ M` and
 the direct sum of copies of `M` indexed by `ι`.
 -/

aca0874a

bump to nightly-2023-03-20-10

mathlib commit https://github.com/leanprover-community/mathlib/commit/7ec294687917cbc5c73620b4414ae9b5dd9ae1b4

0469e46c

Diff

@@ -29,29 +29,47 @@ open LinearMap Submodule
 
 variable {R : Type u} {M : Type v} [Ring R] [AddCommGroup M] [Module R M]
 
-section finsuppLequivDirectSum
+section finsuppLEquivDirectSum
 
 variable (R M) (ι : Type _) [DecidableEq ι]
 
+/- warning: finsupp_lequiv_direct_sum -> finsuppLEquivDirectSum is a dubious translation:
+lean 3 declaration is
+  forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι], LinearEquiv.{u1, u1, max u3 u2, max u3 u2} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (finsuppLEquivDirectSum._proof_1.{u1} R _inst_1) (finsuppLEquivDirectSum._proof_2.{u1} R _inst_1) (Finsupp.{u3, u2} ι M (AddZeroClass.toHasZero.{u2} M (AddMonoid.toAddZeroClass.{u2} M (SubNegMonoid.toAddMonoid.{u2} M (AddGroup.toSubNegMonoid.{u2} M (AddCommGroup.toAddGroup.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (DirectSum.addCommMonoid.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.module.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3))
+but is expected to have type
+  forall (R : Type.{u1}) (M : Type.{u2}) [_inst_1 : Ring.{u1} R] [_inst_2 : AddCommGroup.{u2} M] [_inst_3 : Module.{u1, u2} R M (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)] (ι : Type.{u3}) [_inst_4 : DecidableEq.{succ u3} ι], LinearEquiv.{u1, u1, max u2 u3, max u2 u3} R R (Ring.toSemiring.{u1} R _inst_1) (Ring.toSemiring.{u1} R _inst_1) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHom.id.{u1} R (Semiring.toNonAssocSemiring.{u1} R (Ring.toSemiring.{u1} R _inst_1))) (RingHomInvPair.ids.{u1} R (Ring.toSemiring.{u1} R _inst_1)) (RingHomInvPair.ids.{u1} R (Ring.toSemiring.{u1} R _inst_1)) (Finsupp.{u3, u2} ι M (NegZeroClass.toZero.{u2} M (SubNegZeroMonoid.toNegZeroClass.{u2} M (SubtractionMonoid.toSubNegZeroMonoid.{u2} M (SubtractionCommMonoid.toSubtractionMonoid.{u2} M (AddCommGroup.toDivisionAddCommMonoid.{u2} M _inst_2)))))) (DirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.addCommMonoid.{u3, u2} ι M (AddCommGroup.toAddCommMonoid.{u2} M _inst_2)) (instAddCommMonoidDirectSum.{u3, u2} ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.module.{u3, u2, u1} ι M R (Ring.toSemiring.{u1} R _inst_1) (AddCommGroup.toAddCommMonoid.{u2} M _inst_2) _inst_3) (DirectSum.instModuleDirectSumInstAddCommMonoidDirectSum.{u1, u3, u2} R (Ring.toSemiring.{u1} R _inst_1) ι (fun (i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u2} ((fun (_i : ι) => M) i) _inst_2) (fun (i : ι) => _inst_3))
+Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum finsuppLEquivDirectSumₓ'. -/
 /-- The finitely supported functions `ι →₀ M` are in linear equivalence with the direct sum of
 copies of M indexed by ι. -/
-def finsuppLequivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
+def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ i : ι, M :=
   haveI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
   finsuppLequivDfinsupp R
-#align finsupp_lequiv_direct_sum finsuppLequivDirectSum
-
+#align finsupp_lequiv_direct_sum finsuppLEquivDirectSum
+
+/- warning: finsupp_lequiv_direct_sum_single -> finsuppLEquivDirectSum_single is a dubious translation:
+lean 3 declaration is
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AddCommGroup.toAddCommMonoid.{u2} M _inst_2) (fun (i : ι) => _inst_3) i) m)
+but is expected to have type
+  forall (R : Type.{u2}) (M : Type.{u3}) [_inst_1 : Ring.{u2} R] [_inst_2 : AddCommGroup.{u3} M] [_inst_3 : Module.{u2, u3} R M (Ring.toSemiring.{u2} R _inst_1) (AddCommGroup.toAddCommMonoid.{u3} M _inst_2)] (ι : Type.{u1}) [_inst_4 : DecidableEq.{succ u1} ι] (i : ι) (m : M), Eq.{max (succ u3) (succ u1)} ((fun (x._@.Mathlib.Algebra.Hom.GroupAction._hyg.2186 : Finsupp.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2)))))) => DirectSum.{u1, u3} ι (fun (_i : ι) => M) (fun (i : ι) => AddCommGroup.toAddCommMonoid.{u3} ((fun (_i : ι) => M) i) _inst_2)) (Finsupp.single.{u1, u3} ι M (NegZeroClass.toZero.{u3} M (SubNegZeroMonoid.toNegZeroClass.{u3} M (SubtractionMonoid.toSubNegZeroMonoid.{u3} M (SubtractionCommMonoid.toSubtractionMonoid.{u3} M (AddCommGroup.toDivisionAddCommMonoid.{u3} M _inst_2))))) i m)) 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+Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_singleₓ'. -/
 @[simp]
-theorem finsuppLequivDirectSum_single (i : ι) (m : M) :
-    finsuppLequivDirectSum R M ι (Finsupp.single i m) = DirectSum.lof R ι _ i m :=
+theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
+    finsuppLEquivDirectSum R M ι (Finsupp.single i m) = DirectSum.lof R ι _ i m :=
   Finsupp.toDfinsupp_single i m
-#align finsupp_lequiv_direct_sum_single finsuppLequivDirectSum_single
-
+#align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_single
+
+/- warning: finsupp_lequiv_direct_sum_symm_lof -> finsuppLEquivDirectSum_symm_lof is a dubious translation:
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+but is expected to have type
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+Case conversion may be inaccurate. Consider using '#align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lofₓ'. -/
 @[simp]
-theorem finsuppLequivDirectSum_symm_lof (i : ι) (m : M) :
-    (finsuppLequivDirectSum R M ι).symm (DirectSum.lof R ι _ i m) = Finsupp.single i m :=
+theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :
+    (finsuppLEquivDirectSum R M ι).symm (DirectSum.lof R ι _ i m) = Finsupp.single i m :=
   letI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
   Dfinsupp.toFinsupp_single i m
-#align finsupp_lequiv_direct_sum_symm_lof finsuppLequivDirectSum_symm_lof
+#align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lof
 
-end finsuppLequivDirectSum
+end finsuppLEquivDirectSum

aca0874a

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

aca0874a

feat: generalize direct sum results to avoid negation (#10828)

Three files are modified, where the hypotheses are relaxed from Ring or CommRing to Semiring or CommSemiring, and AddCommGroup to AddCommMonoid. Besides this, no definition is changed, and for one proof in RingTheory.Flat.Basic, I needed to add an instance (letI…) in the proof. (Everything pertains to direct sums of modules.)

Co-authored-by: Antoine Chambert-Loir <antoine.chambert-loir@math.univ-paris-diderot.fr> Co-authored-by: Eric Wieser <wieser.eric@gmail.com>

e9e590d6

Diff

@@ -24,7 +24,7 @@ open DirectSum
 
 open LinearMap Submodule
 
-variable {R : Type u} {M : Type v} [Ring R] [AddCommGroup M] [Module R M]
+variable {R : Type u} {M : Type v} [Semiring R] [AddCommMonoid M] [Module R M]
 
 section finsuppLequivDirectSum

aca0874a

chore: banish Type _ and Sort _ (#6499)

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

This has nice performance benefits.

32de3f67

Diff

@@ -28,7 +28,7 @@ variable {R : Type u} {M : Type v} [Ring R] [AddCommGroup M] [Module R M]
 
 section finsuppLequivDirectSum
 
-variable (R M) (ι : Type _) [DecidableEq ι]
+variable (R M) (ι : Type*) [DecidableEq ι]
 
 /-- The finitely supported functions `ι →₀ M` are in linear equivalence with the direct sum of
 copies of M indexed by ι. -/

aca0874a

chore: script to replace headers with #align_import statements (#5979)

depends on: #5966

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

89aa3a3b

Diff

@@ -2,15 +2,12 @@
 Copyright (c) 2019 Johannes Hölzl. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Johannes Hölzl
-
-! This file was ported from Lean 3 source module algebra.direct_sum.finsupp
-! leanprover-community/mathlib commit aca0874a9ce95510752f4075f80f273172e9b177
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.DirectSum.Module
 import Mathlib.Data.Finsupp.ToDFinsupp
 
+#align_import algebra.direct_sum.finsupp from "leanprover-community/mathlib"@"aca0874a9ce95510752f4075f80f273172e9b177"
+
 /-!
 # Results on direct sums and finitely supported functions.

aca0874a

chore: rename Dfinsupp to DFinsupp (#5822)

See #4354

268b7d43

Diff

@@ -9,7 +9,7 @@ Authors: Johannes Hölzl
 ! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.DirectSum.Module
-import Mathlib.Data.Finsupp.ToDfinsupp
+import Mathlib.Data.Finsupp.ToDFinsupp
 
 /-!
 # Results on direct sums and finitely supported functions.
@@ -37,20 +37,20 @@ variable (R M) (ι : Type _) [DecidableEq ι]
 copies of M indexed by ι. -/
 def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ _ : ι, M :=
   haveI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
-  finsuppLequivDfinsupp R
+  finsuppLequivDFinsupp R
 #align finsupp_lequiv_direct_sum finsuppLEquivDirectSum
 
 @[simp]
 theorem finsuppLEquivDirectSum_single (i : ι) (m : M) :
     finsuppLEquivDirectSum R M ι (Finsupp.single i m) = DirectSum.lof R ι _ i m :=
-  Finsupp.toDfinsupp_single i m
+  Finsupp.toDFinsupp_single i m
 #align finsupp_lequiv_direct_sum_single finsuppLEquivDirectSum_single
 
 @[simp]
 theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :
     (finsuppLEquivDirectSum R M ι).symm (DirectSum.lof R ι _ i m) = Finsupp.single i m :=
   letI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
-  Dfinsupp.toFinsupp_single i m
+  DFinsupp.toFinsupp_single i m
 #align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lof
 
 end finsuppLequivDirectSum

aca0874a

style: allow _ for an argument in notation3 & replace _foo with _ in notation3 (#4652)

e2b5ca37

Diff

@@ -35,7 +35,7 @@ variable (R M) (ι : Type _) [DecidableEq ι]
 
 /-- The finitely supported functions `ι →₀ M` are in linear equivalence with the direct sum of
 copies of M indexed by ι. -/
-def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ _i : ι, M :=
+def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ _ : ι, M :=
   haveI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
   finsuppLequivDfinsupp R
 #align finsupp_lequiv_direct_sum finsuppLEquivDirectSum

aca0874a

chore: cleanup various notes about etaExperiment (#4029)

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>

ecb752ad

Diff

@@ -33,13 +33,9 @@ section finsuppLequivDirectSum
 
 variable (R M) (ι : Type _) [DecidableEq ι]
 
--- Porting note: with etaExperiment no changes required, the statement can be:
--- `(ι →₀ M) ≃ₗ[R] ⨁ i : ι, M`
 /-- The finitely supported functions `ι →₀ M` are in linear equivalence with the direct sum of
 copies of M indexed by ι. -/
-def finsuppLEquivDirectSum : 
-    @LinearEquiv R R _ _ (RingHom.id _) (RingHom.id _) (RingHomInvPair.ids) 
-    (RingHomInvPair.ids) (ι →₀ M) (⨁ _i : ι, M) _ _ _ _ :=
+def finsuppLEquivDirectSum : (ι →₀ M) ≃ₗ[R] ⨁ _i : ι, M :=
   haveI : ∀ m : M, Decidable (m ≠ 0) := Classical.decPred _
   finsuppLequivDfinsupp R
 #align finsupp_lequiv_direct_sum finsuppLEquivDirectSum
@@ -58,4 +54,3 @@ theorem finsuppLEquivDirectSum_symm_lof (i : ι) (m : M) :
 #align finsupp_lequiv_direct_sum_symm_lof finsuppLEquivDirectSum_symm_lof
 
 end finsuppLequivDirectSum
-

aca0874a

feat: port Algebra.DirectSum.Finsupp (#2995)

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

7307cd34

`algebra.direct_sum.finsupp` ⟷ `Mathlib.Algebra.DirectSum.Finsupp`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 8 + 424

algebra.direct_sum.finsupp ⟷ Mathlib.Algebra.DirectSum.Finsupp

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 8 + 424

`algebra.direct_sum.finsupp` ⟷ `Mathlib.Algebra.DirectSum.Finsupp`