category_theory.adjunction.basic ⟷ Mathlib.CategoryTheory.Adjunction.Basic

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

@@ -598,8 +598,10 @@ isomorphisms, then the functor is an equivalence of categories.
 @[simps]
 noncomputable def isRightAdjointToIsEquivalence [IsRightAdjoint G]
     [∀ X, IsIso ((Adjunction.ofRightAdjoint G).Unit.app X)]
-    [∀ Y, IsIso ((Adjunction.ofRightAdjoint G).counit.app Y)] : IsEquivalence G :=
-  IsEquivalence.ofEquivalenceInverse (Adjunction.ofRightAdjoint G).toEquivalence
+    [∀ Y, IsIso ((Adjunction.ofRightAdjoint G).counit.app Y)] :
+    CategoryTheory.Functor.IsEquivalence G :=
+  CategoryTheory.Functor.IsEquivalence.ofEquivalenceInverse
+    (Adjunction.ofRightAdjoint G).toEquivalence
 #align category_theory.adjunction.is_right_adjoint_to_is_equivalence CategoryTheory.Adjunction.isRightAdjointToIsEquivalence
 -/
 
@@ -635,14 +637,15 @@ namespace Functor
 
 #print CategoryTheory.Functor.adjunction /-
 /-- An equivalence `E` is left adjoint to its inverse. -/
-def adjunction (E : C ⥤ D) [IsEquivalence E] : E ⊣ E.inv :=
+def adjunction (E : C ⥤ D) [CategoryTheory.Functor.IsEquivalence E] : E ⊣ E.inv :=
   E.asEquivalence.toAdjunction
 #align category_theory.functor.adjunction CategoryTheory.Functor.adjunction
 -/
 
 #print CategoryTheory.Functor.leftAdjointOfEquivalence /-
 /-- If `F` is an equivalence, it's a left adjoint. -/
-instance (priority := 10) leftAdjointOfEquivalence {F : C ⥤ D} [IsEquivalence F] : IsLeftAdjoint F
+instance (priority := 10) leftAdjointOfEquivalence {F : C ⥤ D}
+    [CategoryTheory.Functor.IsEquivalence F] : IsLeftAdjoint F
     where
   right := _
   adj := Functor.adjunction F
@@ -651,14 +654,16 @@ instance (priority := 10) leftAdjointOfEquivalence {F : C ⥤ D} [IsEquivalence
 
 #print CategoryTheory.Functor.rightAdjoint_of_isEquivalence /-
 @[simp]
-theorem rightAdjoint_of_isEquivalence {F : C ⥤ D} [IsEquivalence F] : rightAdjoint F = inv F :=
+theorem rightAdjoint_of_isEquivalence {F : C ⥤ D} [CategoryTheory.Functor.IsEquivalence F] :
+    rightAdjoint F = inv F :=
   rfl
 #align category_theory.functor.right_adjoint_of_is_equivalence CategoryTheory.Functor.rightAdjoint_of_isEquivalence
 -/
 
 #print CategoryTheory.Functor.rightAdjointOfEquivalence /-
 /-- If `F` is an equivalence, it's a right adjoint. -/
-instance (priority := 10) rightAdjointOfEquivalence {F : C ⥤ D} [IsEquivalence F] : IsRightAdjoint F
+instance (priority := 10) rightAdjointOfEquivalence {F : C ⥤ D}
+    [CategoryTheory.Functor.IsEquivalence F] : IsRightAdjoint F
     where
   left := _
   adj := Functor.adjunction F.inv
@@ -667,7 +672,8 @@ instance (priority := 10) rightAdjointOfEquivalence {F : C ⥤ D} [IsEquivalence
 
 #print CategoryTheory.Functor.leftAdjoint_of_isEquivalence /-
 @[simp]
-theorem leftAdjoint_of_isEquivalence {F : C ⥤ D} [IsEquivalence F] : leftAdjoint F = inv F :=
+theorem leftAdjoint_of_isEquivalence {F : C ⥤ D} [CategoryTheory.Functor.IsEquivalence F] :
+    leftAdjoint F = inv F :=
   rfl
 #align category_theory.functor.left_adjoint_of_is_equivalence CategoryTheory.Functor.leftAdjoint_of_isEquivalence
 -/

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

@@ -349,16 +349,16 @@ def mkOfUnitCounit (adj : CoreUnitCounit F G) : F ⊣ G :=
           rw [F.map_comp, assoc, ← functor.comp_map, adj.counit.naturality, ← assoc]
           convert id_comp f
           have t := congr_arg (fun t : nat_trans _ _ => t.app _) adj.left_triangle
-          dsimp at t 
-          simp only [id_comp] at t 
+          dsimp at t
+          simp only [id_comp] at t
           exact t
         right_inv := fun g => by
           change _ ≫ G.map (_ ≫ _) = _
           rw [G.map_comp, ← assoc, ← functor.comp_map, ← adj.unit.naturality, assoc]
           convert comp_id g
           have t := congr_arg (fun t : nat_trans _ _ => t.app _) adj.right_triangle
-          dsimp at t 
-          simp only [id_comp] at t 
+          dsimp at t
+          simp only [id_comp] at t
           exact t } }
 #align category_theory.adjunction.mk_of_unit_counit CategoryTheory.Adjunction.mkOfUnitCounit
 -/

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

@@ -619,21 +619,15 @@ def toAdjunction (e : C ≌ D) : e.Functor ⊣ e.inverse :=
 #align category_theory.equivalence.to_adjunction CategoryTheory.Equivalence.toAdjunction
 -/
 
-#print CategoryTheory.Equivalence.asEquivalence_toAdjunction_unit /-
 @[simp]
-theorem asEquivalence_toAdjunction_unit {e : C ≌ D} :
-    e.Functor.asEquivalence.toAdjunction.Unit = e.Unit :=
+theorem toAdjunction_unit {e : C ≌ D} : e.Functor.asEquivalence.toAdjunction.Unit = e.Unit :=
   rfl
-#align category_theory.equivalence.as_equivalence_to_adjunction_unit CategoryTheory.Equivalence.asEquivalence_toAdjunction_unit
--/
+#align category_theory.equivalence.as_equivalence_to_adjunction_unit CategoryTheory.Equivalence.toAdjunction_unitₓ
 
-#print CategoryTheory.Equivalence.asEquivalence_toAdjunction_counit /-
 @[simp]
-theorem asEquivalence_toAdjunction_counit {e : C ≌ D} :
-    e.Functor.asEquivalence.toAdjunction.counit = e.counit :=
+theorem toAdjunction_counit {e : C ≌ D} : e.Functor.asEquivalence.toAdjunction.counit = e.counit :=
   rfl
-#align category_theory.equivalence.as_equivalence_to_adjunction_counit CategoryTheory.Equivalence.asEquivalence_toAdjunction_counit
--/
+#align category_theory.equivalence.as_equivalence_to_adjunction_counit CategoryTheory.Equivalence.toAdjunction_counitₓ
 
 end Equivalence
 

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

@@ -3,7 +3,7 @@ Copyright (c) 2019 Reid Barton. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Reid Barton, Johan Commelin, Bhavik Mehta
 -/
-import Mathbin.CategoryTheory.Equivalence
+import CategoryTheory.Equivalence
 
 #align_import category_theory.adjunction.basic from "leanprover-community/mathlib"@"23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6"
 

mathlib commit https://github.com/leanprover-community/mathlib/commit/442a83d738cb208d3600056c489be16900ba701d

@@ -120,10 +120,6 @@ def Adjunction.ofRightAdjoint (right : C ⥤ D) [IsRightAdjoint right] :
 
 namespace Adjunction
 
-restate_axiom hom_equiv_unit'
-
-restate_axiom hom_equiv_counit'
-
 attribute [simp] hom_equiv_unit hom_equiv_counit
 
 section
@@ -265,10 +261,6 @@ structure CoreHomEquiv (F : C ⥤ D) (G : D ⥤ C) where
 
 namespace CoreHomEquiv
 
-restate_axiom hom_equiv_naturality_left_symm'
-
-restate_axiom hom_equiv_naturality_right'
-
 attribute [simp] hom_equiv_naturality_left_symm hom_equiv_naturality_right
 
 variable {F : C ⥤ D} {G : D ⥤ C} (adj : CoreHomEquiv F G) {X' X : C} {Y Y' : D}
@@ -313,10 +305,6 @@ structure CoreUnitCounit (F : C ⥤ D) (G : D ⥤ C) where
 
 namespace CoreUnitCounit
 
-restate_axiom left_triangle'
-
-restate_axiom right_triangle'
-
 attribute [simp] left_triangle right_triangle
 
 end CoreUnitCounit

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

@@ -2,14 +2,11 @@
 Copyright (c) 2019 Reid Barton. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Reid Barton, Johan Commelin, Bhavik Mehta
-
-! This file was ported from Lean 3 source module category_theory.adjunction.basic
-! leanprover-community/mathlib commit 23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Equivalence
 
+#align_import category_theory.adjunction.basic from "leanprover-community/mathlib"@"23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6"
+
 /-!
 # Adjunctions between functors
 

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

@@ -73,7 +73,6 @@ structure Adjunction (F : C ⥤ D) (G : D ⥤ C) where
 #align category_theory.adjunction CategoryTheory.Adjunction
 -/
 
--- mathport name: «expr ⊣ »
 infixl:15 " ⊣ " => Adjunction
 
 #print CategoryTheory.IsLeftAdjoint /-
@@ -134,35 +133,47 @@ section
 
 variable {F : C ⥤ D} {G : D ⥤ C} (adj : F ⊣ G) {X' X : C} {Y Y' : D}
 
+#print CategoryTheory.Adjunction.homEquiv_id /-
 theorem homEquiv_id (X : C) : adj.homEquiv X _ (𝟙 _) = adj.Unit.app X := by simp
 #align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_id
+-/
 
+#print CategoryTheory.Adjunction.homEquiv_symm_id /-
 theorem homEquiv_symm_id (X : D) : (adj.homEquiv _ X).symm (𝟙 _) = adj.counit.app X := by simp
 #align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_id
+-/
 
+#print CategoryTheory.Adjunction.homEquiv_naturality_left_symm /-
 @[simp]
 theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
     (adj.homEquiv X' Y).symm (f ≫ g) = F.map f ≫ (adj.homEquiv X Y).symm g := by
   rw [hom_equiv_counit, F.map_comp, assoc, adj.hom_equiv_counit.symm]
 #align category_theory.adjunction.hom_equiv_naturality_left_symm CategoryTheory.Adjunction.homEquiv_naturality_left_symm
+-/
 
+#print CategoryTheory.Adjunction.homEquiv_naturality_left /-
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
     (adj.homEquiv X' Y) (F.map f ≫ g) = f ≫ (adj.homEquiv X Y) g := by
   rw [← Equiv.eq_symm_apply] <;> simp [-hom_equiv_unit]
 #align category_theory.adjunction.hom_equiv_naturality_left CategoryTheory.Adjunction.homEquiv_naturality_left
+-/
 
+#print CategoryTheory.Adjunction.homEquiv_naturality_right /-
 @[simp]
 theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
     (adj.homEquiv X Y') (f ≫ g) = (adj.homEquiv X Y) f ≫ G.map g := by
   rw [hom_equiv_unit, G.map_comp, ← assoc, ← hom_equiv_unit]
 #align category_theory.adjunction.hom_equiv_naturality_right CategoryTheory.Adjunction.homEquiv_naturality_right
+-/
 
+#print CategoryTheory.Adjunction.homEquiv_naturality_right_symm /-
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
     (adj.homEquiv X Y').symm (f ≫ G.map g) = (adj.homEquiv X Y).symm f ≫ g := by
   rw [Equiv.symm_apply_eq] <;> simp [-hom_equiv_counit]
 #align category_theory.adjunction.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.homEquiv_naturality_right_symm
+-/
 
 #print CategoryTheory.Adjunction.left_triangle /-
 @[simp]
@@ -184,39 +195,51 @@ theorem right_triangle : whiskerLeft G adj.Unit ≫ whiskerRight adj.counit G =
 #align category_theory.adjunction.right_triangle CategoryTheory.Adjunction.right_triangle
 -/
 
+#print CategoryTheory.Adjunction.left_triangle_components /-
 @[simp, reassoc]
 theorem left_triangle_components :
     F.map (adj.Unit.app X) ≫ adj.counit.app (F.obj X) = 𝟙 (F.obj X) :=
   congr_arg (fun t : NatTrans _ (𝟭 C ⋙ F) => t.app X) adj.left_triangle
 #align category_theory.adjunction.left_triangle_components CategoryTheory.Adjunction.left_triangle_components
+-/
 
+#print CategoryTheory.Adjunction.right_triangle_components /-
 @[simp, reassoc]
 theorem right_triangle_components {Y : D} :
     adj.Unit.app (G.obj Y) ≫ G.map (adj.counit.app Y) = 𝟙 (G.obj Y) :=
   congr_arg (fun t : NatTrans _ (G ⋙ 𝟭 C) => t.app Y) adj.right_triangle
 #align category_theory.adjunction.right_triangle_components CategoryTheory.Adjunction.right_triangle_components
+-/
 
+#print CategoryTheory.Adjunction.counit_naturality /-
 @[simp, reassoc]
 theorem counit_naturality {X Y : D} (f : X ⟶ Y) :
     F.map (G.map f) ≫ adj.counit.app Y = adj.counit.app X ≫ f :=
   adj.counit.naturality f
 #align category_theory.adjunction.counit_naturality CategoryTheory.Adjunction.counit_naturality
+-/
 
+#print CategoryTheory.Adjunction.unit_naturality /-
 @[simp, reassoc]
 theorem unit_naturality {X Y : C} (f : X ⟶ Y) :
     adj.Unit.app X ≫ G.map (F.map f) = f ≫ adj.Unit.app Y :=
   (adj.Unit.naturality f).symm
 #align category_theory.adjunction.unit_naturality CategoryTheory.Adjunction.unit_naturality
+-/
 
+#print CategoryTheory.Adjunction.homEquiv_apply_eq /-
 theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     adj.homEquiv A B f = g ↔ f = (adj.homEquiv A B).symm g :=
   ⟨fun h => by cases h; simp, fun h => by cases h; simp⟩
 #align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eq
+-/
 
+#print CategoryTheory.Adjunction.eq_homEquiv_apply /-
 theorem eq_homEquiv_apply {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     g = adj.homEquiv A B f ↔ (adj.homEquiv A B).symm g = f :=
   ⟨fun h => by cases h; simp, fun h => by cases h; simp⟩
 #align category_theory.adjunction.eq_hom_equiv_apply CategoryTheory.Adjunction.eq_homEquiv_apply
+-/
 
 end
 
@@ -253,17 +276,21 @@ attribute [simp] hom_equiv_naturality_left_symm hom_equiv_naturality_right
 
 variable {F : C ⥤ D} {G : D ⥤ C} (adj : CoreHomEquiv F G) {X' X : C} {Y Y' : D}
 
+#print CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_left /-
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
     (adj.homEquiv X' Y) (F.map f ≫ g) = f ≫ (adj.homEquiv X Y) g := by
   rw [← Equiv.eq_symm_apply] <;> simp
 #align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_left CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_left
+-/
 
+#print CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_right_symm /-
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
     (adj.homEquiv X Y').symm (f ≫ G.map g) = (adj.homEquiv X Y).symm f ≫ g := by
   rw [Equiv.symm_apply_eq] <;> simp
 #align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_right_symm
+-/
 
 end CoreHomEquiv
 
@@ -364,6 +391,7 @@ def id : 𝟭 C ⊣ 𝟭 C where
 instance : Inhabited (Adjunction (𝟭 C) (𝟭 C)) :=
   ⟨id⟩
 
+#print CategoryTheory.Adjunction.equivHomsetLeftOfNatIso /-
 /-- If F and G are naturally isomorphic functors, establish an equivalence of hom-sets. -/
 @[simps]
 def equivHomsetLeftOfNatIso {F F' : C ⥤ D} (iso : F ≅ F') {X : C} {Y : D} :
@@ -374,7 +402,9 @@ def equivHomsetLeftOfNatIso {F F' : C ⥤ D} (iso : F ≅ F') {X : C} {Y : D} :
   left_inv f := by simp
   right_inv g := by simp
 #align category_theory.adjunction.equiv_homset_left_of_nat_iso CategoryTheory.Adjunction.equivHomsetLeftOfNatIso
+-/
 
+#print CategoryTheory.Adjunction.equivHomsetRightOfNatIso /-
 /-- If G and H are naturally isomorphic functors, establish an equivalence of hom-sets. -/
 @[simps]
 def equivHomsetRightOfNatIso {G G' : D ⥤ C} (iso : G ≅ G') {X : C} {Y : D} :
@@ -385,6 +415,7 @@ def equivHomsetRightOfNatIso {G G' : D ⥤ C} (iso : G ≅ G') {X : C} {Y : D} :
   left_inv f := by simp
   right_inv g := by simp
 #align category_theory.adjunction.equiv_homset_right_of_nat_iso CategoryTheory.Adjunction.equivHomsetRightOfNatIso
+-/
 
 #print CategoryTheory.Adjunction.ofNatIsoLeft /-
 /-- Transport an adjunction along an natural isomorphism on the left. -/
@@ -473,11 +504,10 @@ variable (e : ∀ X Y, (F_obj X ⟶ Y) ≃ (X ⟶ G.obj Y))
 
 variable (he : ∀ X Y Y' g h, e X Y' (h ≫ g) = e X Y h ≫ G.map g)
 
-include he
-
 private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).symm f ≫ g := by
   intros <;> rw [Equiv.symm_apply_eq, he] <;> simp
 
+#print CategoryTheory.Adjunction.leftAdjointOfEquiv /-
 /-- Construct a left adjoint functor to `G`, given the functor's value on objects `F_obj` and
 a bijection `e` between `F_obj X ⟶ Y` and `X ⟶ G.obj Y` satisfying a naturality law
 `he : ∀ X Y Y' g h, e X Y' (h ≫ g) = e X Y h ≫ G.map g`.
@@ -494,7 +524,9 @@ def leftAdjointOfEquiv : C ⥤ D where
       rw [assoc, ← he, id_comp, Equiv.apply_symm_apply]
     simp
 #align category_theory.adjunction.left_adjoint_of_equiv CategoryTheory.Adjunction.leftAdjointOfEquiv
+-/
 
+#print CategoryTheory.Adjunction.adjunctionOfEquivLeft /-
 /-- Show that the functor given by `left_adjoint_of_equiv` is indeed left adjoint to `G`. Dual
 to `adjunction_of_equiv_right`. -/
 @[simps]
@@ -506,6 +538,7 @@ def adjunctionOfEquivLeft : leftAdjointOfEquiv e he ⊣ G :=
         erw [← he' e he, ← Equiv.apply_eq_iff_eq]
         simp [(he _ _ _ _ _).symm] }
 #align category_theory.adjunction.adjunction_of_equiv_left CategoryTheory.Adjunction.adjunctionOfEquivLeft
+-/
 
 end ConstructLeft
 
@@ -518,11 +551,10 @@ variable (e : ∀ X Y, (F.obj X ⟶ Y) ≃ (X ⟶ G_obj Y))
 
 variable (he : ∀ X' X Y f g, e X' Y (F.map f ≫ g) = f ≫ e X Y g)
 
-include he
-
 private theorem he' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm (f ≫ g) := by
   intros <;> rw [Equiv.eq_symm_apply, he] <;> simp
 
+#print CategoryTheory.Adjunction.rightAdjointOfEquiv /-
 /-- Construct a right adjoint functor to `F`, given the functor's value on objects `G_obj` and
 a bijection `e` between `F.obj X ⟶ Y` and `X ⟶ G_obj Y` satisfying a naturality law
 `he : ∀ X Y Y' g h, e X' Y (F.map f ≫ g) = f ≫ e X Y g`.
@@ -539,7 +571,9 @@ def rightAdjointOfEquiv : D ⥤ C where
       rw [← assoc, he' e he, comp_id, Equiv.symm_apply_apply]
     simp
 #align category_theory.adjunction.right_adjoint_of_equiv CategoryTheory.Adjunction.rightAdjointOfEquiv
+-/
 
+#print CategoryTheory.Adjunction.adjunctionOfEquivRight /-
 /-- Show that the functor given by `right_adjoint_of_equiv` is indeed right adjoint to `F`. Dual
 to `adjunction_of_equiv_left`. -/
 @[simps]
@@ -551,9 +585,11 @@ def adjunctionOfEquivRight : F ⊣ rightAdjointOfEquiv e he :=
         intro X Y Y' g h
         erw [← he, Equiv.apply_eq_iff_eq, ← assoc, he' e he, comp_id, Equiv.symm_apply_apply] }
 #align category_theory.adjunction.adjunction_of_equiv_right CategoryTheory.Adjunction.adjunctionOfEquivRight
+-/
 
 end ConstructRight
 
+#print CategoryTheory.Adjunction.toEquivalence /-
 /--
 If the unit and counit of a given adjunction are (pointwise) isomorphisms, then we can upgrade the
 adjunction to an equivalence.
@@ -567,7 +603,9 @@ noncomputable def toEquivalence (adj : F ⊣ G) [∀ X, IsIso (adj.Unit.app X)]
   unitIso := NatIso.ofComponents (fun X => asIso (adj.Unit.app X)) (by simp)
   counitIso := NatIso.ofComponents (fun Y => asIso (adj.counit.app Y)) (by simp)
 #align category_theory.adjunction.to_equivalence CategoryTheory.Adjunction.toEquivalence
+-/
 
+#print CategoryTheory.Adjunction.isRightAdjointToIsEquivalence /-
 /--
 If the unit and counit for the adjunction corresponding to a right adjoint functor are (pointwise)
 isomorphisms, then the functor is an equivalence of categories.
@@ -578,6 +616,7 @@ noncomputable def isRightAdjointToIsEquivalence [IsRightAdjoint G]
     [∀ Y, IsIso ((Adjunction.ofRightAdjoint G).counit.app Y)] : IsEquivalence G :=
   IsEquivalence.ofEquivalenceInverse (Adjunction.ofRightAdjoint G).toEquivalence
 #align category_theory.adjunction.is_right_adjoint_to_is_equivalence CategoryTheory.Adjunction.isRightAdjointToIsEquivalence
+-/
 
 end Adjunction
 
@@ -585,6 +624,7 @@ open Adjunction
 
 namespace Equivalence
 
+#print CategoryTheory.Equivalence.toAdjunction /-
 /-- The adjunction given by an equivalence of categories. (To obtain the opposite adjunction,
 simply use `e.symm.to_adjunction`. -/
 def toAdjunction (e : C ≌ D) : e.Functor ⊣ e.inverse :=
@@ -592,18 +632,23 @@ def toAdjunction (e : C ≌ D) : e.Functor ⊣ e.inverse :=
     ⟨e.Unit, e.counit, by ext; dsimp; simp only [id_comp]; exact e.functor_unit_comp _, by ext;
       dsimp; simp only [id_comp]; exact e.unit_inverse_comp _⟩
 #align category_theory.equivalence.to_adjunction CategoryTheory.Equivalence.toAdjunction
+-/
 
+#print CategoryTheory.Equivalence.asEquivalence_toAdjunction_unit /-
 @[simp]
 theorem asEquivalence_toAdjunction_unit {e : C ≌ D} :
     e.Functor.asEquivalence.toAdjunction.Unit = e.Unit :=
   rfl
 #align category_theory.equivalence.as_equivalence_to_adjunction_unit CategoryTheory.Equivalence.asEquivalence_toAdjunction_unit
+-/
 
+#print CategoryTheory.Equivalence.asEquivalence_toAdjunction_counit /-
 @[simp]
 theorem asEquivalence_toAdjunction_counit {e : C ≌ D} :
     e.Functor.asEquivalence.toAdjunction.counit = e.counit :=
   rfl
 #align category_theory.equivalence.as_equivalence_to_adjunction_counit CategoryTheory.Equivalence.asEquivalence_toAdjunction_counit
+-/
 
 end Equivalence
 

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

@@ -337,16 +337,16 @@ def mkOfUnitCounit (adj : CoreUnitCounit F G) : F ⊣ G :=
           rw [F.map_comp, assoc, ← functor.comp_map, adj.counit.naturality, ← assoc]
           convert id_comp f
           have t := congr_arg (fun t : nat_trans _ _ => t.app _) adj.left_triangle
-          dsimp at t
-          simp only [id_comp] at t
+          dsimp at t 
+          simp only [id_comp] at t 
           exact t
         right_inv := fun g => by
           change _ ≫ G.map (_ ≫ _) = _
           rw [G.map_comp, ← assoc, ← functor.comp_map, ← adj.unit.naturality, assoc]
           convert comp_id g
           have t := congr_arg (fun t : nat_trans _ _ => t.app _) adj.right_triangle
-          dsimp at t
-          simp only [id_comp] at t
+          dsimp at t 
+          simp only [id_comp] at t 
           exact t } }
 #align category_theory.adjunction.mk_of_unit_counit CategoryTheory.Adjunction.mkOfUnitCounit
 -/

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

@@ -134,48 +134,30 @@ section
 
 variable {F : C ⥤ D} {G : D ⥤ C} (adj : F ⊣ G) {X' X : C} {Y Y' : D}
 
-/- warning: category_theory.adjunction.hom_equiv_id -> CategoryTheory.Adjunction.homEquiv_id is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_idₓ'. -/
 theorem homEquiv_id (X : C) : adj.homEquiv X _ (𝟙 _) = adj.Unit.app X := by simp
 #align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_id
 
-/- warning: category_theory.adjunction.hom_equiv_symm_id -> CategoryTheory.Adjunction.homEquiv_symm_id is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_idₓ'. -/
 theorem homEquiv_symm_id (X : D) : (adj.homEquiv _ X).symm (𝟙 _) = adj.counit.app X := by simp
 #align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_id
 
-/- warning: category_theory.adjunction.hom_equiv_naturality_left_symm -> CategoryTheory.Adjunction.homEquiv_naturality_left_symm is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left_symm CategoryTheory.Adjunction.homEquiv_naturality_left_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
     (adj.homEquiv X' Y).symm (f ≫ g) = F.map f ≫ (adj.homEquiv X Y).symm g := by
   rw [hom_equiv_counit, F.map_comp, assoc, adj.hom_equiv_counit.symm]
 #align category_theory.adjunction.hom_equiv_naturality_left_symm CategoryTheory.Adjunction.homEquiv_naturality_left_symm
 
-/- warning: category_theory.adjunction.hom_equiv_naturality_left -> CategoryTheory.Adjunction.homEquiv_naturality_left is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left CategoryTheory.Adjunction.homEquiv_naturality_leftₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
     (adj.homEquiv X' Y) (F.map f ≫ g) = f ≫ (adj.homEquiv X Y) g := by
   rw [← Equiv.eq_symm_apply] <;> simp [-hom_equiv_unit]
 #align category_theory.adjunction.hom_equiv_naturality_left CategoryTheory.Adjunction.homEquiv_naturality_left
 
-/- warning: category_theory.adjunction.hom_equiv_naturality_right -> CategoryTheory.Adjunction.homEquiv_naturality_right is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right CategoryTheory.Adjunction.homEquiv_naturality_rightₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
     (adj.homEquiv X Y') (f ≫ g) = (adj.homEquiv X Y) f ≫ G.map g := by
   rw [hom_equiv_unit, G.map_comp, ← assoc, ← hom_equiv_unit]
 #align category_theory.adjunction.hom_equiv_naturality_right CategoryTheory.Adjunction.homEquiv_naturality_right
 
-/- warning: category_theory.adjunction.hom_equiv_naturality_right_symm -> CategoryTheory.Adjunction.homEquiv_naturality_right_symm is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.homEquiv_naturality_right_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
     (adj.homEquiv X Y').symm (f ≫ G.map g) = (adj.homEquiv X Y).symm f ≫ g := by
@@ -202,62 +184,35 @@ theorem right_triangle : whiskerLeft G adj.Unit ≫ whiskerRight adj.counit G =
 #align category_theory.adjunction.right_triangle CategoryTheory.Adjunction.right_triangle
 -/
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.left_triangle_components CategoryTheory.Adjunction.left_triangle_componentsₓ'. -/
 @[simp, reassoc]
 theorem left_triangle_components :
     F.map (adj.Unit.app X) ≫ adj.counit.app (F.obj X) = 𝟙 (F.obj X) :=
   congr_arg (fun t : NatTrans _ (𝟭 C ⋙ F) => t.app X) adj.left_triangle
 #align category_theory.adjunction.left_triangle_components CategoryTheory.Adjunction.left_triangle_components
 
-/- warning: category_theory.adjunction.right_triangle_components -> CategoryTheory.Adjunction.right_triangle_components is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.right_triangle_components CategoryTheory.Adjunction.right_triangle_componentsₓ'. -/
 @[simp, reassoc]
 theorem right_triangle_components {Y : D} :
     adj.Unit.app (G.obj Y) ≫ G.map (adj.counit.app Y) = 𝟙 (G.obj Y) :=
   congr_arg (fun t : NatTrans _ (G ⋙ 𝟭 C) => t.app Y) adj.right_triangle
 #align category_theory.adjunction.right_triangle_components CategoryTheory.Adjunction.right_triangle_components
 
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 @[simp, reassoc]
 theorem counit_naturality {X Y : D} (f : X ⟶ Y) :
     F.map (G.map f) ≫ adj.counit.app Y = adj.counit.app X ≫ f :=
   adj.counit.naturality f
 #align category_theory.adjunction.counit_naturality CategoryTheory.Adjunction.counit_naturality
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.unit_naturality CategoryTheory.Adjunction.unit_naturalityₓ'. -/
 @[simp, reassoc]
 theorem unit_naturality {X Y : C} (f : X ⟶ Y) :
     adj.Unit.app X ≫ G.map (F.map f) = f ≫ adj.Unit.app Y :=
   (adj.Unit.naturality f).symm
 #align category_theory.adjunction.unit_naturality CategoryTheory.Adjunction.unit_naturality
 
-/- warning: category_theory.adjunction.hom_equiv_apply_eq -> CategoryTheory.Adjunction.homEquiv_apply_eq is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eqₓ'. -/
 theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     adj.homEquiv A B f = g ↔ f = (adj.homEquiv A B).symm g :=
   ⟨fun h => by cases h; simp, fun h => by cases h; simp⟩
 #align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eq
 
-/- warning: category_theory.adjunction.eq_hom_equiv_apply -> CategoryTheory.Adjunction.eq_homEquiv_apply is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.eq_hom_equiv_apply CategoryTheory.Adjunction.eq_homEquiv_applyₓ'. -/
 theorem eq_homEquiv_apply {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     g = adj.homEquiv A B f ↔ (adj.homEquiv A B).symm g = f :=
   ⟨fun h => by cases h; simp, fun h => by cases h; simp⟩
@@ -298,18 +253,12 @@ attribute [simp] hom_equiv_naturality_left_symm hom_equiv_naturality_right
 
 variable {F : C ⥤ D} {G : D ⥤ C} (adj : CoreHomEquiv F G) {X' X : C} {Y Y' : D}
 
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-<too large>
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 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
     (adj.homEquiv X' Y) (F.map f ≫ g) = f ≫ (adj.homEquiv X Y) g := by
   rw [← Equiv.eq_symm_apply] <;> simp
 #align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_left CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_left
 
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-<too large>
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 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
     (adj.homEquiv X Y').symm (f ≫ G.map g) = (adj.homEquiv X Y).symm f ≫ g := by
@@ -415,12 +364,6 @@ def id : 𝟭 C ⊣ 𝟭 C where
 instance : Inhabited (Adjunction (𝟭 C) (𝟭 C)) :=
   ⟨id⟩
 
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 /-- If F and G are naturally isomorphic functors, establish an equivalence of hom-sets. -/
 @[simps]
 def equivHomsetLeftOfNatIso {F F' : C ⥤ D} (iso : F ≅ F') {X : C} {Y : D} :
@@ -432,12 +375,6 @@ def equivHomsetLeftOfNatIso {F F' : C ⥤ D} (iso : F ≅ F') {X : C} {Y : D} :
   right_inv g := by simp
 #align category_theory.adjunction.equiv_homset_left_of_nat_iso CategoryTheory.Adjunction.equivHomsetLeftOfNatIso
 
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 /-- If G and H are naturally isomorphic functors, establish an equivalence of hom-sets. -/
 @[simps]
 def equivHomsetRightOfNatIso {G G' : D ⥤ C} (iso : G ≅ G') {X : C} {Y : D} :
@@ -541,9 +478,6 @@ include he
 private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).symm f ≫ g := by
   intros <;> rw [Equiv.symm_apply_eq, he] <;> simp
 
-/- warning: category_theory.adjunction.left_adjoint_of_equiv -> CategoryTheory.Adjunction.leftAdjointOfEquiv is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.left_adjoint_of_equiv CategoryTheory.Adjunction.leftAdjointOfEquivₓ'. -/
 /-- Construct a left adjoint functor to `G`, given the functor's value on objects `F_obj` and
 a bijection `e` between `F_obj X ⟶ Y` and `X ⟶ G.obj Y` satisfying a naturality law
 `he : ∀ X Y Y' g h, e X Y' (h ≫ g) = e X Y h ≫ G.map g`.
@@ -561,9 +495,6 @@ def leftAdjointOfEquiv : C ⥤ D where
     simp
 #align category_theory.adjunction.left_adjoint_of_equiv CategoryTheory.Adjunction.leftAdjointOfEquiv
 
-/- warning: category_theory.adjunction.adjunction_of_equiv_left -> CategoryTheory.Adjunction.adjunctionOfEquivLeft is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.adjunction_of_equiv_left CategoryTheory.Adjunction.adjunctionOfEquivLeftₓ'. -/
 /-- Show that the functor given by `left_adjoint_of_equiv` is indeed left adjoint to `G`. Dual
 to `adjunction_of_equiv_right`. -/
 @[simps]
@@ -592,9 +523,6 @@ include he
 private theorem he' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm (f ≫ g) := by
   intros <;> rw [Equiv.eq_symm_apply, he] <;> simp
 
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-<too large>
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 /-- Construct a right adjoint functor to `F`, given the functor's value on objects `G_obj` and
 a bijection `e` between `F.obj X ⟶ Y` and `X ⟶ G_obj Y` satisfying a naturality law
 `he : ∀ X Y Y' g h, e X' Y (F.map f ≫ g) = f ≫ e X Y g`.
@@ -612,9 +540,6 @@ def rightAdjointOfEquiv : D ⥤ C where
     simp
 #align category_theory.adjunction.right_adjoint_of_equiv CategoryTheory.Adjunction.rightAdjointOfEquiv
 
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-<too large>
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 /-- Show that the functor given by `right_adjoint_of_equiv` is indeed right adjoint to `F`. Dual
 to `adjunction_of_equiv_left`. -/
 @[simps]
@@ -629,12 +554,6 @@ def adjunctionOfEquivRight : F ⊣ rightAdjointOfEquiv e he :=
 
 end ConstructRight
 
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 /--
 If the unit and counit of a given adjunction are (pointwise) isomorphisms, then we can upgrade the
 adjunction to an equivalence.
@@ -649,12 +568,6 @@ noncomputable def toEquivalence (adj : F ⊣ G) [∀ X, IsIso (adj.Unit.app X)]
   counitIso := NatIso.ofComponents (fun Y => asIso (adj.counit.app Y)) (by simp)
 #align category_theory.adjunction.to_equivalence CategoryTheory.Adjunction.toEquivalence
 
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 /--
 If the unit and counit for the adjunction corresponding to a right adjoint functor are (pointwise)
 isomorphisms, then the functor is an equivalence of categories.
@@ -672,12 +585,6 @@ open Adjunction
 
 namespace Equivalence
 
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 /-- The adjunction given by an equivalence of categories. (To obtain the opposite adjunction,
 simply use `e.symm.to_adjunction`. -/
 def toAdjunction (e : C ≌ D) : e.Functor ⊣ e.inverse :=
@@ -686,24 +593,12 @@ def toAdjunction (e : C ≌ D) : e.Functor ⊣ e.inverse :=
       dsimp; simp only [id_comp]; exact e.unit_inverse_comp _⟩
 #align category_theory.equivalence.to_adjunction CategoryTheory.Equivalence.toAdjunction
 
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 @[simp]
 theorem asEquivalence_toAdjunction_unit {e : C ≌ D} :
     e.Functor.asEquivalence.toAdjunction.Unit = e.Unit :=
   rfl
 #align category_theory.equivalence.as_equivalence_to_adjunction_unit CategoryTheory.Equivalence.asEquivalence_toAdjunction_unit
 
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 @[simp]
 theorem asEquivalence_toAdjunction_counit {e : C ≌ D} :
     e.Functor.asEquivalence.toAdjunction.counit = e.counit :=

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

@@ -252,11 +252,7 @@ theorem unit_naturality {X Y : C} (f : X ⟶ Y) :
 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eqₓ'. -/
 theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     adj.homEquiv A B f = g ↔ f = (adj.homEquiv A B).symm g :=
-  ⟨fun h => by
-    cases h
-    simp, fun h => by
-    cases h
-    simp⟩
+  ⟨fun h => by cases h; simp, fun h => by cases h; simp⟩
 #align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eq
 
 /- warning: category_theory.adjunction.eq_hom_equiv_apply -> CategoryTheory.Adjunction.eq_homEquiv_apply is a dubious translation:
@@ -264,11 +260,7 @@ theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B
 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.eq_hom_equiv_apply CategoryTheory.Adjunction.eq_homEquiv_applyₓ'. -/
 theorem eq_homEquiv_apply {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     g = adj.homEquiv A B f ↔ (adj.homEquiv A B).symm g = f :=
-  ⟨fun h => by
-    cases h
-    simp, fun h => by
-    cases h
-    simp⟩
+  ⟨fun h => by cases h; simp, fun h => by cases h; simp⟩
 #align category_theory.adjunction.eq_hom_equiv_apply CategoryTheory.Adjunction.eq_homEquiv_apply
 
 end
@@ -690,15 +682,8 @@ Case conversion may be inaccurate. Consider using '#align category_theory.equiva
 simply use `e.symm.to_adjunction`. -/
 def toAdjunction (e : C ≌ D) : e.Functor ⊣ e.inverse :=
   mkOfUnitCounit
-    ⟨e.Unit, e.counit, by
-      ext
-      dsimp
-      simp only [id_comp]
-      exact e.functor_unit_comp _, by
-      ext
-      dsimp
-      simp only [id_comp]
-      exact e.unit_inverse_comp _⟩
+    ⟨e.Unit, e.counit, by ext; dsimp; simp only [id_comp]; exact e.functor_unit_comp _, by ext;
+      dsimp; simp only [id_comp]; exact e.unit_inverse_comp _⟩
 #align category_theory.equivalence.to_adjunction CategoryTheory.Equivalence.toAdjunction
 
 /- warning: category_theory.equivalence.as_equivalence_to_adjunction_unit -> CategoryTheory.Equivalence.asEquivalence_toAdjunction_unit is a dubious translation:

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

@@ -135,28 +135,19 @@ section
 variable {F : C ⥤ D} {G : D ⥤ C} (adj : F ⊣ G) {X' X : C} {Y Y' : D}
 
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 theorem homEquiv_id (X : C) : adj.homEquiv X _ (𝟙 _) = adj.Unit.app X := by simp
 #align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_id
 
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 theorem homEquiv_symm_id (X : D) : (adj.homEquiv _ X).symm (𝟙 _) = adj.counit.app X := by simp
 #align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_id
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left_symm CategoryTheory.Adjunction.homEquiv_naturality_left_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
@@ -165,10 +156,7 @@ theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
 #align category_theory.adjunction.hom_equiv_naturality_left_symm CategoryTheory.Adjunction.homEquiv_naturality_left_symm
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left CategoryTheory.Adjunction.homEquiv_naturality_leftₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
@@ -177,10 +165,7 @@ theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
 #align category_theory.adjunction.hom_equiv_naturality_left CategoryTheory.Adjunction.homEquiv_naturality_left
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right CategoryTheory.Adjunction.homEquiv_naturality_rightₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
@@ -189,10 +174,7 @@ theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
 #align category_theory.adjunction.hom_equiv_naturality_right CategoryTheory.Adjunction.homEquiv_naturality_right
 
 /- warning: category_theory.adjunction.hom_equiv_naturality_right_symm -> CategoryTheory.Adjunction.homEquiv_naturality_right_symm is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.homEquiv_naturality_right_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
@@ -233,10 +215,7 @@ theorem left_triangle_components :
 #align category_theory.adjunction.left_triangle_components CategoryTheory.Adjunction.left_triangle_components
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.right_triangle_components CategoryTheory.Adjunction.right_triangle_componentsₓ'. -/
 @[simp, reassoc]
 theorem right_triangle_components {Y : D} :
@@ -269,10 +248,7 @@ theorem unit_naturality {X Y : C} (f : X ⟶ Y) :
 #align category_theory.adjunction.unit_naturality CategoryTheory.Adjunction.unit_naturality
 
 /- warning: category_theory.adjunction.hom_equiv_apply_eq -> CategoryTheory.Adjunction.homEquiv_apply_eq is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eqₓ'. -/
 theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     adj.homEquiv A B f = g ↔ f = (adj.homEquiv A B).symm g :=
@@ -284,10 +260,7 @@ theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B
 #align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eq
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.eq_hom_equiv_apply CategoryTheory.Adjunction.eq_homEquiv_applyₓ'. -/
 theorem eq_homEquiv_apply {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     g = adj.homEquiv A B f ↔ (adj.homEquiv A B).symm g = f :=
@@ -334,10 +307,7 @@ attribute [simp] hom_equiv_naturality_left_symm hom_equiv_naturality_right
 variable {F : C ⥤ D} {G : D ⥤ C} (adj : CoreHomEquiv F G) {X' X : C} {Y Y' : D}
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_left CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_leftₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
@@ -346,10 +316,7 @@ theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
 #align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_left CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_left
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_right_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
@@ -581,13 +548,9 @@ include he
 
 private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).symm f ≫ g := by
   intros <;> rw [Equiv.symm_apply_eq, he] <;> simp
-#align category_theory.adjunction.he' category_theory.adjunction.he'
 
 /- warning: category_theory.adjunction.left_adjoint_of_equiv -> CategoryTheory.Adjunction.leftAdjointOfEquiv is a dubious translation:
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 /-- Construct a left adjoint functor to `G`, given the functor's value on objects `F_obj` and
 a bijection `e` between `F_obj X ⟶ Y` and `X ⟶ G.obj Y` satisfying a naturality law
@@ -607,10 +570,7 @@ def leftAdjointOfEquiv : C ⥤ D where
 #align category_theory.adjunction.left_adjoint_of_equiv CategoryTheory.Adjunction.leftAdjointOfEquiv
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.adjunction_of_equiv_left CategoryTheory.Adjunction.adjunctionOfEquivLeftₓ'. -/
 /-- Show that the functor given by `left_adjoint_of_equiv` is indeed left adjoint to `G`. Dual
 to `adjunction_of_equiv_right`. -/
@@ -639,13 +599,9 @@ include he
 
 private theorem he' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm (f ≫ g) := by
   intros <;> rw [Equiv.eq_symm_apply, he] <;> simp
-#align category_theory.adjunction.he' category_theory.adjunction.he'
 
 /- warning: category_theory.adjunction.right_adjoint_of_equiv -> CategoryTheory.Adjunction.rightAdjointOfEquiv is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.right_adjoint_of_equiv CategoryTheory.Adjunction.rightAdjointOfEquivₓ'. -/
 /-- Construct a right adjoint functor to `F`, given the functor's value on objects `G_obj` and
 a bijection `e` between `F.obj X ⟶ Y` and `X ⟶ G_obj Y` satisfying a naturality law
@@ -665,10 +621,7 @@ def rightAdjointOfEquiv : D ⥤ C where
 #align category_theory.adjunction.right_adjoint_of_equiv CategoryTheory.Adjunction.rightAdjointOfEquiv
 
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(CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X) Y) => Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X (G_obj Y)) _x) (Equiv.instFunLikeEquiv.{succ u2, succ u1} (Quiver.Hom.{succ u2, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X) Y) (Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X (G_obj Y))) (e X Y) g))), CategoryTheory.Adjunction.{u1, u2, u3, u4} C _inst_1 D _inst_2 F (CategoryTheory.Adjunction.rightAdjointOfEquiv.{u1, u2, u3, u4} C _inst_1 D _inst_2 F (fun (Y : D) => G_obj Y) e he)
+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.adjunction_of_equiv_right CategoryTheory.Adjunction.adjunctionOfEquivRightₓ'. -/
 /-- Show that the functor given by `right_adjoint_of_equiv` is indeed right adjoint to `F`. Dual
 to `adjunction_of_equiv_left`. -/

mathlib commit https://github.com/leanprover-community/mathlib/commit/75e7fca56381d056096ce5d05e938f63a6567828

@@ -226,7 +226,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] {F : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2} {G : CategoryTheory.Functor.{u2, u1, u4, u3} D _inst_2 C _inst_1} (adj : CategoryTheory.Adjunction.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G) {X : C}, Eq.{succ u2} (Quiver.Hom.{succ u2, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1)) X)) (Prefunctor.obj.{succ u2, succ u2, u4, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.id.{u2, u4} D _inst_2)) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) 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(CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.id.{u2, u4} D _inst_2)) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X)) (Prefunctor.map.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1)) X) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.comp.{u1, u2, u1, u3, u4, u3} C _inst_1 D _inst_2 C _inst_1 F G)) X) (CategoryTheory.NatTrans.app.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1) (CategoryTheory.Functor.comp.{u1, u2, u1, u3, u4, u3} C _inst_1 D _inst_2 C _inst_1 F G) (CategoryTheory.Adjunction.unit.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G adj) X)) (CategoryTheory.NatTrans.app.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.comp.{u2, u1, u2, u4, u3, u4} D _inst_2 C _inst_1 D _inst_2 G F) (CategoryTheory.Functor.id.{u2, u4} D _inst_2) (CategoryTheory.Adjunction.counit.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G adj) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X))) (CategoryTheory.CategoryStruct.id.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X))
 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.left_triangle_components CategoryTheory.Adjunction.left_triangle_componentsₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem left_triangle_components :
     F.map (adj.Unit.app X) ≫ adj.counit.app (F.obj X) = 𝟙 (F.obj X) :=
   congr_arg (fun t : NatTrans _ (𝟭 C ⋙ F) => t.app X) adj.left_triangle
@@ -238,7 +238,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] {F : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2} {G : CategoryTheory.Functor.{u2, u1, u4, u3} D _inst_2 C _inst_1} (adj : CategoryTheory.Adjunction.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G) {Y : D}, Eq.{succ u1} (Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1)) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) Y)) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) (Prefunctor.obj.{succ u2, succ u2, u4, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.id.{u2, u4} D _inst_2)) Y))) (CategoryTheory.CategoryStruct.comp.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1)) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) Y)) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.comp.{u1, u2, u1, u3, u4, u3} C _inst_1 D _inst_2 C _inst_1 F G)) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) Y)) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) (Prefunctor.obj.{succ u2, succ u2, u4, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.id.{u2, u4} D _inst_2)) Y)) (CategoryTheory.NatTrans.app.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1) (CategoryTheory.Functor.comp.{u1, u2, u1, u3, u4, u3} C _inst_1 D _inst_2 C _inst_1 F G) (CategoryTheory.Adjunction.unit.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G adj) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) Y)) (Prefunctor.map.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) Y)) (Prefunctor.obj.{succ u2, succ u2, u4, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.id.{u2, u4} D _inst_2)) Y) (CategoryTheory.NatTrans.app.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.comp.{u2, u1, u2, u4, u3, u4} D _inst_2 C _inst_1 D _inst_2 G F) (CategoryTheory.Functor.id.{u2, u4} D _inst_2) (CategoryTheory.Adjunction.counit.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G adj) Y))) (CategoryTheory.CategoryStruct.id.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) Y))
 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.right_triangle_components CategoryTheory.Adjunction.right_triangle_componentsₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem right_triangle_components {Y : D} :
     adj.Unit.app (G.obj Y) ≫ G.map (adj.counit.app Y) = 𝟙 (G.obj Y) :=
   congr_arg (fun t : NatTrans _ (G ⋙ 𝟭 C) => t.app Y) adj.right_triangle
@@ -250,7 +250,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] {F : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2} {G : CategoryTheory.Functor.{u2, u1, u4, u3} D _inst_2 C _inst_1} (adj : CategoryTheory.Adjunction.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G) {X : D} {Y : D} (f : Quiver.Hom.{succ u2, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) X Y), Eq.{succ u2} (Quiver.Hom.{succ u2, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) X)) (Prefunctor.obj.{succ u2, succ u2, u4, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.id.{u2, u4} D _inst_2)) Y)) (CategoryTheory.CategoryStruct.comp.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C 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(CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) X) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) Y) (Prefunctor.map.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) X Y f)) (CategoryTheory.NatTrans.app.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.comp.{u2, u1, u2, u4, u3, u4} D _inst_2 C _inst_1 D _inst_2 G F) (CategoryTheory.Functor.id.{u2, u4} D _inst_2) (CategoryTheory.Adjunction.counit.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G adj) Y)) (CategoryTheory.CategoryStruct.comp.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2) (Prefunctor.obj.{succ u2, succ u2, u4, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.comp.{u2, u1, u2, u4, u3, u4} D _inst_2 C _inst_1 D _inst_2 G F)) X) (Prefunctor.obj.{succ u2, succ u2, u4, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.id.{u2, u4} D _inst_2)) X) Y (CategoryTheory.NatTrans.app.{u2, u2, u4, u4} D _inst_2 D _inst_2 (CategoryTheory.Functor.comp.{u2, u1, u2, u4, u3, u4} D _inst_2 C _inst_1 D _inst_2 G F) (CategoryTheory.Functor.id.{u2, u4} D _inst_2) (CategoryTheory.Adjunction.counit.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G adj) X) f)
 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.counit_naturality CategoryTheory.Adjunction.counit_naturalityₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem counit_naturality {X Y : D} (f : X ⟶ Y) :
     F.map (G.map f) ≫ adj.counit.app Y = adj.counit.app X ≫ f :=
   adj.counit.naturality f
@@ -262,7 +262,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] {F : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2} {G : CategoryTheory.Functor.{u2, u1, u4, u3} D _inst_2 C _inst_1} (adj : CategoryTheory.Adjunction.{u1, u2, u3, u4} C _inst_1 D _inst_2 F G) {X : C} {Y : C} (f : Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X Y), Eq.{succ u1} (Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1)) X) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u4, u3} D _inst_2 C _inst_1 G) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) Y))) (CategoryTheory.CategoryStruct.comp.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.id.{u1, u3} C _inst_1)) X) (Prefunctor.obj.{succ u1, succ u1, u3, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u3, u3} C _inst_1 C _inst_1 (CategoryTheory.Functor.comp.{u1, u2, u1, u3, u4, u3} C _inst_1 D _inst_2 C _inst_1 F G)) X) (Prefunctor.obj.{succ u2, succ u1, u4, u3} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C 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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.unit_naturality CategoryTheory.Adjunction.unit_naturalityₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem unit_naturality {X Y : C} (f : X ⟶ Y) :
     adj.Unit.app X ≫ G.map (F.map f) = f ≫ adj.Unit.app Y :=
   (adj.Unit.naturality f).symm

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

@@ -138,7 +138,7 @@ variable {F : C ⥤ D} {G : D ⥤ C} (adj : F ⊣ G) {X' X : C} {Y Y' : D}
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_idₓ'. -/
 theorem homEquiv_id (X : C) : adj.homEquiv X _ (𝟙 _) = adj.Unit.app X := by simp
 #align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_id
@@ -147,7 +147,7 @@ theorem homEquiv_id (X : C) : adj.homEquiv X _ (𝟙 _) = adj.Unit.app X := by s
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_idₓ'. -/
 theorem homEquiv_symm_id (X : D) : (adj.homEquiv _ X).symm (𝟙 _) = adj.counit.app X := by simp
 #align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_id
@@ -156,7 +156,7 @@ theorem homEquiv_symm_id (X : D) : (adj.homEquiv _ X).symm (𝟙 _) = adj.counit
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left_symm CategoryTheory.Adjunction.homEquiv_naturality_left_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
@@ -168,7 +168,7 @@ theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left CategoryTheory.Adjunction.homEquiv_naturality_leftₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
@@ -180,7 +180,7 @@ theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right CategoryTheory.Adjunction.homEquiv_naturality_rightₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
@@ -192,7 +192,7 @@ theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.homEquiv_naturality_right_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
@@ -272,7 +272,7 @@ theorem unit_naturality {X Y : C} (f : X ⟶ Y) :
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eqₓ'. -/
 theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     adj.homEquiv A B f = g ↔ f = (adj.homEquiv A B).symm g :=
@@ -287,7 +287,7 @@ theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.eq_hom_equiv_apply CategoryTheory.Adjunction.eq_homEquiv_applyₓ'. -/
 theorem eq_homEquiv_apply {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     g = adj.homEquiv A B f ↔ (adj.homEquiv A B).symm g = f :=
@@ -337,7 +337,7 @@ variable {F : C ⥤ D} {G : D ⥤ C} (adj : CoreHomEquiv F G) {X' X : C} {Y Y' :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_left CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_leftₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
@@ -349,7 +349,7 @@ theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_right_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
@@ -587,7 +587,7 @@ private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).sym
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.left_adjoint_of_equiv CategoryTheory.Adjunction.leftAdjointOfEquivₓ'. -/
 /-- Construct a left adjoint functor to `G`, given the functor's value on objects `F_obj` and
 a bijection `e` between `F_obj X ⟶ Y` and `X ⟶ G.obj Y` satisfying a naturality law
@@ -610,7 +610,7 @@ def leftAdjointOfEquiv : C ⥤ D where
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.adjunction_of_equiv_left CategoryTheory.Adjunction.adjunctionOfEquivLeftₓ'. -/
 /-- Show that the functor given by `left_adjoint_of_equiv` is indeed left adjoint to `G`. Dual
 to `adjunction_of_equiv_right`. -/
@@ -645,7 +645,7 @@ private theorem he' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.right_adjoint_of_equiv CategoryTheory.Adjunction.rightAdjointOfEquivₓ'. -/
 /-- Construct a right adjoint functor to `F`, given the functor's value on objects `G_obj` and
 a bijection `e` between `F.obj X ⟶ Y` and `X ⟶ G_obj Y` satisfying a naturality law
@@ -668,7 +668,7 @@ def rightAdjointOfEquiv : D ⥤ C where
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.adjunction_of_equiv_right CategoryTheory.Adjunction.adjunctionOfEquivRightₓ'. -/
 /-- Show that the functor given by `right_adjoint_of_equiv` is indeed right adjoint to `F`. Dual
 to `adjunction_of_equiv_left`. -/

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

@@ -138,7 +138,7 @@ variable {F : C ⥤ D} {G : D ⥤ C} (adj : F ⊣ G) {X' X : C} {Y Y' : D}
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_idₓ'. -/
 theorem homEquiv_id (X : C) : adj.homEquiv X _ (𝟙 _) = adj.Unit.app X := by simp
 #align category_theory.adjunction.hom_equiv_id CategoryTheory.Adjunction.homEquiv_id
@@ -147,7 +147,7 @@ theorem homEquiv_id (X : C) : adj.homEquiv X _ (𝟙 _) = adj.Unit.app X := by s
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_idₓ'. -/
 theorem homEquiv_symm_id (X : D) : (adj.homEquiv _ X).symm (𝟙 _) = adj.counit.app X := by simp
 #align category_theory.adjunction.hom_equiv_symm_id CategoryTheory.Adjunction.homEquiv_symm_id
@@ -156,7 +156,7 @@ theorem homEquiv_symm_id (X : D) : (adj.homEquiv _ X).symm (𝟙 _) = adj.counit
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left_symm CategoryTheory.Adjunction.homEquiv_naturality_left_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
@@ -168,7 +168,7 @@ theorem homEquiv_naturality_left_symm (f : X' ⟶ X) (g : X ⟶ G.obj Y) :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_left CategoryTheory.Adjunction.homEquiv_naturality_leftₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
@@ -180,7 +180,7 @@ theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right CategoryTheory.Adjunction.homEquiv_naturality_rightₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
@@ -192,7 +192,7 @@ theorem homEquiv_naturality_right (f : F.obj X ⟶ Y) (g : Y ⟶ Y') :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.homEquiv_naturality_right_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
@@ -272,7 +272,7 @@ theorem unit_naturality {X Y : C} (f : X ⟶ Y) :
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.hom_equiv_apply_eq CategoryTheory.Adjunction.homEquiv_apply_eqₓ'. -/
 theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     adj.homEquiv A B f = g ↔ f = (adj.homEquiv A B).symm g :=
@@ -287,7 +287,7 @@ theorem homEquiv_apply_eq {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.eq_hom_equiv_apply CategoryTheory.Adjunction.eq_homEquiv_applyₓ'. -/
 theorem eq_homEquiv_apply {A : C} {B : D} (f : F.obj A ⟶ B) (g : A ⟶ G.obj B) :
     g = adj.homEquiv A B f ↔ (adj.homEquiv A B).symm g = f :=
@@ -337,7 +337,7 @@ variable {F : C ⥤ D} {G : D ⥤ C} (adj : CoreHomEquiv F G) {X' X : C} {Y Y' :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_left CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_leftₓ'. -/
 @[simp]
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
@@ -349,7 +349,7 @@ theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_right_symmₓ'. -/
 @[simp]
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
@@ -587,7 +587,7 @@ private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).sym
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.left_adjoint_of_equiv CategoryTheory.Adjunction.leftAdjointOfEquivₓ'. -/
 /-- Construct a left adjoint functor to `G`, given the functor's value on objects `F_obj` and
 a bijection `e` between `F_obj X ⟶ Y` and `X ⟶ G.obj Y` satisfying a naturality law
@@ -610,7 +610,7 @@ def leftAdjointOfEquiv : C ⥤ D where
 lean 3 declaration is
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 but is expected to have type
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.adjunction_of_equiv_left CategoryTheory.Adjunction.adjunctionOfEquivLeftₓ'. -/
 /-- Show that the functor given by `left_adjoint_of_equiv` is indeed left adjoint to `G`. Dual
 to `adjunction_of_equiv_right`. -/
@@ -645,7 +645,7 @@ private theorem he' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.right_adjoint_of_equiv CategoryTheory.Adjunction.rightAdjointOfEquivₓ'. -/
 /-- Construct a right adjoint functor to `F`, given the functor's value on objects `G_obj` and
 a bijection `e` between `F.obj X ⟶ Y` and `X ⟶ G_obj Y` satisfying a naturality law
@@ -668,7 +668,7 @@ def rightAdjointOfEquiv : D ⥤ C where
 lean 3 declaration is
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u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X) Y) (fun (_x : Quiver.Hom.{succ u2, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (Prefunctor.obj.{succ u1, succ u2, u3, u4} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D (CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X) Y) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : Quiver.Hom.{succ u2, u4} D (CategoryTheory.CategoryStruct.toQuiver.{u2, u4} D 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(CategoryTheory.Category.toCategoryStruct.{u2, u4} D _inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 F) X) Y) (Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X (G_obj Y))) (e X Y) g))), CategoryTheory.Adjunction.{u1, u2, u3, u4} C _inst_1 D _inst_2 F (CategoryTheory.Adjunction.rightAdjointOfEquiv.{u1, u2, u3, u4} C _inst_1 D _inst_2 F (fun (Y : D) => G_obj Y) e he)
 Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.adjunction_of_equiv_right CategoryTheory.Adjunction.adjunctionOfEquivRightₓ'. -/
 /-- Show that the functor given by `right_adjoint_of_equiv` is indeed right adjoint to `F`. Dual
 to `adjunction_of_equiv_left`. -/

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

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Reid Barton, Johan Commelin, Bhavik Mehta
 
 ! This file was ported from Lean 3 source module category_theory.adjunction.basic
-! leanprover-community/mathlib commit 14b69e9f3c16630440a2cbd46f1ddad0d561dee7
+! leanprover-community/mathlib commit 23aa88e32dcc9d2a24cca7bc23268567ed4cd7d6
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -13,6 +13,9 @@ import Mathbin.CategoryTheory.Equivalence
 /-!
 # Adjunctions between functors
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 `F ⊣ G` represents the data of an adjunction between two functors
 `F : C ⥤ D` and `G : D ⥤ C`. `F` is the left adjoint and `G` is the right adjoint.
 

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

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

@@ -242,7 +242,7 @@ namespace Adjunction
 See `Adjunction.mkOfHomEquiv`.
 This structure won't typically be used anywhere else.
 -/
--- Porting comment: `has_nonempty_instance` linter doesn't exist (yet?)
+-- Porting note(#5171): `has_nonempty_instance` linter not ported yet
 -- @[nolint has_nonempty_instance]
 structure CoreHomEquiv (F : C ⥤ D) (G : D ⥤ C) where
   /-- The equivalence between `Hom (F X) Y` and `Hom X (G Y)` -/
@@ -304,7 +304,7 @@ end CoreHomEquiv
 See `Adjunction.mkOfUnitCounit`.
 This structure won't typically be used anywhere else.
 -/
--- Porting comment: `has_nonempty_instance` linter doesn't exist (yet?)
+-- Porting note(#5171): `has_nonempty_instance` linter not ported yet
 -- @[nolint has_nonempty_instance]
 structure CoreUnitCounit (F : C ⥤ D) (G : D ⥤ C) where
   /-- The unit of an adjunction between `F` and `G` -/

These notions on functors are now Functor.Full, Functor.Faithful, Functor.EssSurj, Functor.IsEquivalence, Functor.ReflectsIsomorphisms. Deprecated aliases are introduced for the previous names.

@@ -597,8 +597,8 @@ isomorphisms, then the functor is an equivalence of categories.
 @[simps!]
 noncomputable def isRightAdjointToIsEquivalence [IsRightAdjoint G]
     [∀ X, IsIso ((Adjunction.ofRightAdjoint G).unit.app X)]
-    [∀ Y, IsIso ((Adjunction.ofRightAdjoint G).counit.app Y)] : IsEquivalence G :=
-  IsEquivalence.ofEquivalenceInverse (Adjunction.ofRightAdjoint G).toEquivalence
+    [∀ Y, IsIso ((Adjunction.ofRightAdjoint G).counit.app Y)] : G.IsEquivalence :=
+  Functor.IsEquivalence.ofEquivalenceInverse (Adjunction.ofRightAdjoint G).toEquivalence
 #align category_theory.adjunction.is_right_adjoint_to_is_equivalence CategoryTheory.Adjunction.isRightAdjointToIsEquivalence
 
 end Adjunction

Quoting [@digama0](https://github.com/digama0):

These were actually never meant to go in the file, they are basically debugging information and only useful on significantly broken mathport files. You can safely remove all of them.

@@ -78,7 +78,6 @@ structure Adjunction (F : C ⥤ D) (G : D ⥤ C) where
 #align category_theory.adjunction.hom_equiv_counit CategoryTheory.Adjunction.homEquiv_counit
 #align category_theory.adjunction.hom_equiv_counit' CategoryTheory.Adjunction.homEquiv_counit
 
--- mathport name: «expr ⊣ »
 /-- The notation `F ⊣ G` stands for `Adjunction F G` representing that `F` is left adjoint to `G` -/
 infixl:15 " ⊣ " => Adjunction
 

Empty lines were removed by executing the following Python script twice

import os
import re


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

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

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

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

@@ -494,9 +494,7 @@ section ConstructLeft
 -- Hom(X, GY) natural in Y. The action of F on morphisms can be
 -- constructed from this data.
 variable {F_obj : C → D}
-
 variable (e : ∀ X Y, (F_obj X ⟶ Y) ≃ (X ⟶ G.obj Y))
-
 variable (he : ∀ X Y Y' g h, e X Y' (h ≫ g) = e X Y h ≫ G.map g)
 
 private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).symm f ≫ g := by
@@ -541,9 +539,7 @@ section ConstructRight
 
 -- Construction of a right adjoint, analogous to the above.
 variable {G_obj : D → C}
-
 variable (e : ∀ X Y, (F.obj X ⟶ Y) ≃ (X ⟶ G_obj Y))
-
 variable (he : ∀ X' X Y f g, e X' Y (F.map f ≫ g) = f ≫ e X Y g)
 
 private theorem he'' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm (f ≫ g) := by

More tactics that are not used, found using the linter at #11308.

The PR consists of tactic removals, whitespace changes and replacing a porting note by an explanation.

@@ -500,7 +500,7 @@ variable (e : ∀ X Y, (F_obj X ⟶ Y) ≃ (X ⟶ G.obj Y))
 variable (he : ∀ X Y Y' g h, e X Y' (h ≫ g) = e X Y h ≫ G.map g)
 
 private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).symm f ≫ g := by
-  intros; rw [Equiv.symm_apply_eq, he]; simp
+  rw [Equiv.symm_apply_eq, he]; simp
 -- #align category_theory.adjunction.he' category_theory.adjunction.he'
 
 /-- Construct a left adjoint functor to `G`, given the functor's value on objects `F_obj` and
@@ -547,7 +547,7 @@ variable (e : ∀ X Y, (F.obj X ⟶ Y) ≃ (X ⟶ G_obj Y))
 variable (he : ∀ X' X Y f g, e X' Y (F.map f ≫ g) = f ≫ e X Y g)
 
 private theorem he'' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm (f ≫ g) := by
-  intros; rw [Equiv.eq_symm_apply, he]; simp
+  rw [Equiv.eq_symm_apply, he]; simp
 -- #align category_theory.adjunction.he' category_theory.adjunction.he'
 
 /-- Construct a right adjoint functor to `F`, given the functor's value on objects `G_obj` and

Homogenises porting notes via capitalisation and addition of whitespace.

It makes the following changes:

• converts "--porting note" into "-- Porting note";
• converts "porting note" into "Porting note".

@@ -122,7 +122,7 @@ def Adjunction.ofRightAdjoint (right : C ⥤ D) [IsRightAdjoint right] :
 
 namespace Adjunction
 
--- porting note: Workaround not needed in Lean 4
+-- Porting note: Workaround not needed in Lean 4
 -- restate_axiom homEquiv_unit'
 
 -- restate_axiom homEquiv_counit'

This PR contains various prerequisites in order to show that under suitable assumptions, a localized category of a category that has finite products also has finite products:

• the equivalence of categories (J → C) ≌ (Discrete J ⥤ C)
• more API for the existence of limits as a consequence of a right adjoint to the constant functor C ⥤ (J ⥤ C).
• the typeclass MorphismProperty.IsStableUnderFiniteProducts

@@ -187,6 +187,8 @@ theorem right_triangle : whiskerLeft G adj.unit ≫ whiskerRight adj.counit G =
   simp
 #align category_theory.adjunction.right_triangle CategoryTheory.Adjunction.right_triangle
 
+variable (X Y)
+
 @[reassoc (attr := simp)]
 theorem left_triangle_components :
     F.map (adj.unit.app X) ≫ adj.counit.app (F.obj X) = 𝟙 (F.obj X) :=
@@ -194,11 +196,13 @@ theorem left_triangle_components :
 #align category_theory.adjunction.left_triangle_components CategoryTheory.Adjunction.left_triangle_components
 
 @[reassoc (attr := simp)]
-theorem right_triangle_components {Y : D} :
+theorem right_triangle_components :
     adj.unit.app (G.obj Y) ≫ G.map (adj.counit.app Y) = 𝟙 (G.obj Y) :=
   congr_arg (fun t : NatTrans _ (G ⋙ 𝟭 C) => t.app Y) adj.right_triangle
 #align category_theory.adjunction.right_triangle_components CategoryTheory.Adjunction.right_triangle_components
 
+variable {X Y}
+
 @[reassoc (attr := simp)]
 theorem counit_naturality {X Y : D} (f : X ⟶ Y) :
     F.map (G.map f) ≫ adj.counit.app Y = adj.counit.app X ≫ f :=

Removes nonterminal simps on lines looking like simp [...]

@@ -524,7 +524,7 @@ def adjunctionOfEquivLeft : leftAdjointOfEquiv e he ⊣ G :=
       homEquiv_naturality_left_symm := fun {X'} {X} {Y} f g => by
         have := @he' C _ D _ G F_obj e he
         erw [← this, ← Equiv.apply_eq_iff_eq (e X' Y)]
-        simp [(he X' (F_obj X) Y (e X Y |>.symm g) (leftAdjointOfEquiv e he |>.map f)).symm]
+        simp only [leftAdjointOfEquiv_obj, Equiv.apply_symm_apply, assoc]
         congr
         rw [← he]
         simp

@@ -610,6 +610,7 @@ namespace Equivalence
 
 /-- The adjunction given by an equivalence of categories. (To obtain the opposite adjunction,
 simply use `e.symm.toAdjunction`. -/
+@[pp_dot, simps! unit counit]
 def toAdjunction (e : C ≌ D) : e.functor ⊣ e.inverse :=
   mkOfUnitCounit
     ⟨e.unit, e.counit, by
@@ -623,17 +624,8 @@ def toAdjunction (e : C ≌ D) : e.functor ⊣ e.inverse :=
       exact e.unit_inverse_comp _⟩
 #align category_theory.equivalence.to_adjunction CategoryTheory.Equivalence.toAdjunction
 
-@[simp]
-theorem asEquivalence_toAdjunction_unit {e : C ≌ D} :
-    e.functor.asEquivalence.toAdjunction.unit = e.unit :=
-  rfl
-#align category_theory.equivalence.as_equivalence_to_adjunction_unit CategoryTheory.Equivalence.asEquivalence_toAdjunction_unit
-
-@[simp]
-theorem asEquivalence_toAdjunction_counit {e : C ≌ D} :
-    e.functor.asEquivalence.toAdjunction.counit = e.counit :=
-  rfl
-#align category_theory.equivalence.as_equivalence_to_adjunction_counit CategoryTheory.Equivalence.asEquivalence_toAdjunction_counit
+#align category_theory.equivalence.as_equivalence_to_adjunction_unit CategoryTheory.Equivalence.toAdjunction_unitₓ
+#align category_theory.equivalence.as_equivalence_to_adjunction_counit CategoryTheory.Equivalence.toAdjunction_counitₓ
 
 end Equivalence
 

• depends on: #5966

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

@@ -2,14 +2,11 @@
 Copyright (c) 2019 Reid Barton. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Reid Barton, Johan Commelin, Bhavik Mehta
-
-! This file was ported from Lean 3 source module category_theory.adjunction.basic
-! leanprover-community/mathlib commit d101e93197bb5f6ea89bd7ba386b7f7dff1f3903
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Equivalence
 
+#align_import category_theory.adjunction.basic from "leanprover-community/mathlib"@"d101e93197bb5f6ea89bd7ba386b7f7dff1f3903"
+
 /-!
 # Adjunctions between functors
 

This is the second half of the changes originally in #5699, removing all occurrences of ; after a space and implementing a linter rule to enforce it.

In most cases this 2-character substring has a space after it, so the following command was run first:

find . -type f -name "*.lean" -exec sed -i -E 's/ ; /; /g' {} \;

The remaining cases were few enough in number that they were done manually.

@@ -279,23 +279,23 @@ variable {F : C ⥤ D} {G : D ⥤ C} (adj : CoreHomEquiv F G) {X' X : C} {Y Y' :
 @[simp]
 theorem homEquiv_naturality_left_aux (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
     (adj.homEquiv X' (F.obj X)) (F.map f) ≫ G.map g = f ≫ (adj.homEquiv X Y) g := by
-  rw [← homEquiv_naturality_right, ← Equiv.eq_symm_apply] ; simp
+  rw [← homEquiv_naturality_right, ← Equiv.eq_symm_apply]; simp
 
 -- @[simp] -- Porting note: LHS simplifies, added aux lemma above
 theorem homEquiv_naturality_left (f : X' ⟶ X) (g : F.obj X ⟶ Y) :
     (adj.homEquiv X' Y) (F.map f ≫ g) = f ≫ (adj.homEquiv X Y) g := by
-  rw [← Equiv.eq_symm_apply] ; simp
+  rw [← Equiv.eq_symm_apply]; simp
 #align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_left CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_left
 
 @[simp]
 theorem homEquiv_naturality_right_symm_aux (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
     F.map f ≫ (adj.homEquiv (G.obj Y) Y').symm (G.map g) = (adj.homEquiv X Y).symm f ≫ g := by
-  rw [← homEquiv_naturality_left_symm, Equiv.symm_apply_eq] ; simp
+  rw [← homEquiv_naturality_left_symm, Equiv.symm_apply_eq]; simp
 
 -- @[simp] -- Porting note: LHS simplifies, added aux lemma above
 theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
     (adj.homEquiv X Y').symm (f ≫ G.map g) = (adj.homEquiv X Y).symm f ≫ g := by
-  rw [Equiv.symm_apply_eq] ; simp
+  rw [Equiv.symm_apply_eq]; simp
 #align category_theory.adjunction.core_hom_equiv.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.CoreHomEquiv.homEquiv_naturality_right_symm
 
 end CoreHomEquiv
@@ -499,7 +499,7 @@ variable (e : ∀ X Y, (F_obj X ⟶ Y) ≃ (X ⟶ G.obj Y))
 variable (he : ∀ X Y Y' g h, e X Y' (h ≫ g) = e X Y h ≫ G.map g)
 
 private theorem he' {X Y Y'} (f g) : (e X Y').symm (f ≫ G.map g) = (e X Y).symm f ≫ g := by
-  intros ; rw [Equiv.symm_apply_eq, he] ; simp
+  intros; rw [Equiv.symm_apply_eq, he]; simp
 -- #align category_theory.adjunction.he' category_theory.adjunction.he'
 
 /-- Construct a left adjoint functor to `G`, given the functor's value on objects `F_obj` and
@@ -546,7 +546,7 @@ variable (e : ∀ X Y, (F.obj X ⟶ Y) ≃ (X ⟶ G_obj Y))
 variable (he : ∀ X' X Y f g, e X' Y (F.map f ≫ g) = f ≫ e X Y g)
 
 private theorem he'' {X' X Y} (f g) : F.map f ≫ (e X Y).symm g = (e X' Y).symm (f ≫ g) := by
-  intros ; rw [Equiv.eq_symm_apply, he] ; simp
+  intros; rw [Equiv.eq_symm_apply, he]; simp
 -- #align category_theory.adjunction.he' category_theory.adjunction.he'
 
 /-- Construct a right adjoint functor to `F`, given the functor's value on objects `G_obj` and

All of these are doc fixes

@@ -425,13 +425,13 @@ def equivHomsetRightOfNatIso {G G' : D ⥤ C} (iso : G ≅ G') {X : C} {Y : D} :
   right_inv g := by simp
 #align category_theory.adjunction.equiv_homset_right_of_nat_iso CategoryTheory.Adjunction.equivHomsetRightOfNatIso
 
-/-- Transport an adjunction along an natural isomorphism on the left. -/
+/-- Transport an adjunction along a natural isomorphism on the left. -/
 def ofNatIsoLeft {F G : C ⥤ D} {H : D ⥤ C} (adj : F ⊣ H) (iso : F ≅ G) : G ⊣ H :=
   Adjunction.mkOfHomEquiv
     { homEquiv := fun X Y => (equivHomsetLeftOfNatIso iso.symm).trans (adj.homEquiv X Y) }
 #align category_theory.adjunction.of_nat_iso_left CategoryTheory.Adjunction.ofNatIsoLeft
 
-/-- Transport an adjunction along an natural isomorphism on the right. -/
+/-- Transport an adjunction along a natural isomorphism on the right. -/
 def ofNatIsoRight {F : C ⥤ D} {G H : D ⥤ C} (adj : F ⊣ G) (iso : G ≅ H) : F ⊣ H :=
   Adjunction.mkOfHomEquiv
     { homEquiv := fun X Y => (adj.homEquiv X Y).trans (equivHomsetRightOfNatIso iso) }

Clean up of automation in the category theory library. Leaving out unnecessary proof steps, or fields done by aesop_cat, and making more use of available autoparameters.

Co-authored-by: Scott Morrison <scott.morrison@anu.edu.au>

@@ -590,8 +590,8 @@ noncomputable def toEquivalence (adj : F ⊣ G) [∀ X, IsIso (adj.unit.app X)]
     where
   functor := F
   inverse := G
-  unitIso := NatIso.ofComponents (fun X => asIso (adj.unit.app X)) (by simp)
-  counitIso := NatIso.ofComponents (fun Y => asIso (adj.counit.app Y)) (by simp)
+  unitIso := NatIso.ofComponents fun X => asIso (adj.unit.app X)
+  counitIso := NatIso.ofComponents fun Y => asIso (adj.counit.app Y)
 #align category_theory.adjunction.to_equivalence CategoryTheory.Adjunction.toEquivalence
 
 /--

This PR puts, with one exception, every single remaining by that lies all by itself on its own line to the previous line, thus matching the current behaviour of start-port.sh. The exception is when the by begins the second or later argument to a tuple or anonymous constructor; see https://github.com/leanprover-community/mathlib4/pull/3825#discussion_r1186702599.

Essentially this is s/\n *by$/ by/g, but with manual editing to satisfy the linter's max-100-char-line requirement. The Python style linter is also modified to catch these "isolated bys".

@@ -510,8 +510,7 @@ Dual to `rightAdjointOfEquiv`. -/
 def leftAdjointOfEquiv : C ⥤ D where
   obj := F_obj
   map {X} {X'} f := (e X (F_obj X')).symm (f ≫ e X' (F_obj X') (𝟙 _))
-  map_comp := fun f f' =>
-    by
+  map_comp := fun f f' => by
     rw [Equiv.symm_apply_eq, he, Equiv.apply_symm_apply]
     conv =>
       rhs

@@ -177,14 +177,14 @@ theorem homEquiv_naturality_right_symm (f : X ⟶ G.obj Y) (g : Y ⟶ Y') :
 #align category_theory.adjunction.hom_equiv_naturality_right_symm CategoryTheory.Adjunction.homEquiv_naturality_right_symm
 
 @[simp]
-theorem left_triangle : whiskerRight adj.unit F ≫ whiskerLeft F adj.counit = NatTrans.id _ := by
+theorem left_triangle : whiskerRight adj.unit F ≫ whiskerLeft F adj.counit = 𝟙 _ := by
   ext; dsimp
   erw [← adj.homEquiv_counit, Equiv.symm_apply_eq, adj.homEquiv_unit]
   simp
 #align category_theory.adjunction.left_triangle CategoryTheory.Adjunction.left_triangle
 
 @[simp]
-theorem right_triangle : whiskerLeft G adj.unit ≫ whiskerRight adj.counit G = NatTrans.id _ := by
+theorem right_triangle : whiskerLeft G adj.unit ≫ whiskerRight adj.counit G = 𝟙 _ := by
   ext; dsimp
   erw [← adj.homEquiv_unit, ← Equiv.eq_symm_apply, adj.homEquiv_counit]
   simp
@@ -387,10 +387,10 @@ def mkOfUnitCounit (adj : CoreUnitCounit F G) : F ⊣ G :=
           exact t } }
 #align category_theory.adjunction.mk_of_unit_counit CategoryTheory.Adjunction.mkOfUnitCounit
 
-/- Porting note: simpNF linter claims these are solved by simp but that 
+/- Porting note: simpNF linter claims these are solved by simp but that
 is not true -/
-attribute [nolint simpNF] CategoryTheory.Adjunction.mkOfUnitCounit_homEquiv_symm_apply 
-attribute [nolint simpNF] CategoryTheory.Adjunction.mkOfUnitCounit_homEquiv_apply 
+attribute [nolint simpNF] CategoryTheory.Adjunction.mkOfUnitCounit_homEquiv_symm_apply
+attribute [nolint simpNF] CategoryTheory.Adjunction.mkOfUnitCounit_homEquiv_apply
 
 /-- The adjunction between the identity functor on a category and itself. -/
 def id : 𝟭 C ⊣ 𝟭 C where

Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com> Co-authored-by: Matthew Ballard <matt@mrb.email> Co-authored-by: thorimur <68410468+thorimur@users.noreply.github.com>