category_theory.limits.shapes.equalizers

Changes since the initial port

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

Changes in mathlib3

4698e35c

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

f4758115

bump to nightly-2024-03-17-08

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

22f01ce4

Diff

@@ -1482,7 +1482,7 @@ def isEqualizerCompMono {c : Fork f g} (i : IsLimit c) {Z : C} (h : Y ⟶ Z) [hm
     let s' : Fork f g := Fork.ofι s.ι (by apply hm.right_cancellation <;> simp [s.condition])
     let l := Fork.IsLimit.lift' i s'.ι s'.condition
     ⟨l.1, l.2, fun m hm => by
-      apply fork.is_limit.hom_ext i <;> rw [fork.ι_of_ι] at hm  <;> rw [hm] <;> exact l.2.symm⟩
+      apply fork.is_limit.hom_ext i <;> rw [fork.ι_of_ι] at hm <;> rw [hm] <;> exact l.2.symm⟩
 #align category_theory.limits.is_equalizer_comp_mono CategoryTheory.Limits.isEqualizerCompMono
 -/
 
@@ -1580,8 +1580,7 @@ def isCoequalizerEpiComp {c : Cofork f g} (i : IsColimit c) {W : C} (h : W ⟶ X
       Cofork.ofπ s.π (by apply hm.left_cancellation <;> simp_rw [← category.assoc, s.condition])
     let l := Cofork.IsColimit.desc' i s'.π s'.condition
     ⟨l.1, l.2, fun m hm => by
-      apply cofork.is_colimit.hom_ext i <;> rw [cofork.π_of_π] at hm  <;> rw [hm] <;>
-        exact l.2.symm⟩
+      apply cofork.is_colimit.hom_ext i <;> rw [cofork.π_of_π] at hm <;> rw [hm] <;> exact l.2.symm⟩
 #align category_theory.limits.is_coequalizer_epi_comp CategoryTheory.Limits.isCoequalizerEpiComp
 -/

f4758115

bump to nightly-2023-09-24-06

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

5655435f

Diff

@@ -3,8 +3,8 @@ Copyright (c) 2018 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison, Markus Himmel
 -/
-import Mathbin.CategoryTheory.EpiMono
-import Mathbin.CategoryTheory.Limits.HasLimits
+import CategoryTheory.EpiMono
+import CategoryTheory.Limits.HasLimits
 
 #align_import category_theory.limits.shapes.equalizers from "leanprover-community/mathlib"@"f47581155c818e6361af4e4fda60d27d020c226b"

f4758115

bump to nightly-2023-07-20-09

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

9c56d0dd

Diff

@@ -2,15 +2,12 @@
 Copyright (c) 2018 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison, Markus Himmel
-
-! This file was ported from Lean 3 source module category_theory.limits.shapes.equalizers
-! leanprover-community/mathlib commit f47581155c818e6361af4e4fda60d27d020c226b
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.EpiMono
 import Mathbin.CategoryTheory.Limits.HasLimits
 
+#align_import category_theory.limits.shapes.equalizers from "leanprover-community/mathlib"@"f47581155c818e6361af4e4fda60d27d020c226b"
+
 /-!
 # Equalizers and coequalizers

f4758115

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -128,28 +128,37 @@ def walkingParallelPairOp : WalkingParallelPair ⥤ WalkingParallelPairᵒᵖ
 #align category_theory.limits.walking_parallel_pair_op CategoryTheory.Limits.walkingParallelPairOp
 -/
 
+#print CategoryTheory.Limits.walkingParallelPairOp_zero /-
 @[simp]
 theorem walkingParallelPairOp_zero : walkingParallelPairOp.obj zero = op one :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_zero CategoryTheory.Limits.walkingParallelPairOp_zero
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOp_one /-
 @[simp]
 theorem walkingParallelPairOp_one : walkingParallelPairOp.obj one = op zero :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_one CategoryTheory.Limits.walkingParallelPairOp_one
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOp_left /-
 @[simp]
 theorem walkingParallelPairOp_left :
     walkingParallelPairOp.map left = @Quiver.Hom.op _ _ zero one left :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_left CategoryTheory.Limits.walkingParallelPairOp_left
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOp_right /-
 @[simp]
 theorem walkingParallelPairOp_right :
     walkingParallelPairOp.map right = @Quiver.Hom.op _ _ zero one right :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_right CategoryTheory.Limits.walkingParallelPairOp_right
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOpEquiv /-
 /--
 The equivalence `walking_parallel_pair ⥤ walking_parallel_pairᵒᵖ` sending left to left and right to
 right.
@@ -169,30 +178,39 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
       let g := f.unop; have : f = g.op := rfl; clear_value g; subst this
       rcases i with (_ | _) <;> rcases j with (_ | _) <;> rcases g with (_ | _ | _) <;> rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv CategoryTheory.Limits.walkingParallelPairOpEquiv
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zero /-
 @[simp]
 theorem walkingParallelPairOpEquiv_unitIso_zero :
     walkingParallelPairOpEquiv.unitIso.app zero = Iso.refl zero :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zero
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_one /-
 @[simp]
 theorem walkingParallelPairOpEquiv_unitIso_one :
     walkingParallelPairOpEquiv.unitIso.app one = Iso.refl one :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_one
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero /-
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_zero :
     walkingParallelPairOpEquiv.counitIso.app (op zero) = Iso.refl (op zero) :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_one /-
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_one :
     walkingParallelPairOpEquiv.counitIso.app (op one) = Iso.refl (op one) :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_one
+-/
 
 variable {C : Type u} [Category.{v} C]
 
@@ -217,31 +235,42 @@ def parallelPair (f g : X ⟶ Y) : WalkingParallelPair ⥤ C
 #align category_theory.limits.parallel_pair CategoryTheory.Limits.parallelPair
 -/
 
+#print CategoryTheory.Limits.parallelPair_obj_zero /-
 @[simp]
 theorem parallelPair_obj_zero (f g : X ⟶ Y) : (parallelPair f g).obj zero = X :=
   rfl
 #align category_theory.limits.parallel_pair_obj_zero CategoryTheory.Limits.parallelPair_obj_zero
+-/
 
+#print CategoryTheory.Limits.parallelPair_obj_one /-
 @[simp]
 theorem parallelPair_obj_one (f g : X ⟶ Y) : (parallelPair f g).obj one = Y :=
   rfl
 #align category_theory.limits.parallel_pair_obj_one CategoryTheory.Limits.parallelPair_obj_one
+-/
 
+#print CategoryTheory.Limits.parallelPair_map_left /-
 @[simp]
 theorem parallelPair_map_left (f g : X ⟶ Y) : (parallelPair f g).map left = f :=
   rfl
 #align category_theory.limits.parallel_pair_map_left CategoryTheory.Limits.parallelPair_map_left
+-/
 
+#print CategoryTheory.Limits.parallelPair_map_right /-
 @[simp]
 theorem parallelPair_map_right (f g : X ⟶ Y) : (parallelPair f g).map right = g :=
   rfl
 #align category_theory.limits.parallel_pair_map_right CategoryTheory.Limits.parallelPair_map_right
+-/
 
+#print CategoryTheory.Limits.parallelPair_functor_obj /-
 @[simp]
 theorem parallelPair_functor_obj {F : WalkingParallelPair ⥤ C} (j : WalkingParallelPair) :
     (parallelPair (F.map left) (F.map right)).obj j = F.obj j := by cases j <;> rfl
 #align category_theory.limits.parallel_pair_functor_obj CategoryTheory.Limits.parallelPair_functor_obj
+-/
 
+#print CategoryTheory.Limits.diagramIsoParallelPair /-
 /-- Every functor indexing a (co)equalizer is naturally isomorphic (actually, equal) to a
     `parallel_pair` -/
 @[simps]
@@ -249,6 +278,7 @@ def diagramIsoParallelPair (F : WalkingParallelPair ⥤ C) :
     F ≅ parallelPair (F.map left) (F.map right) :=
   (NatIso.ofComponents fun j => eqToIso <| by cases j <;> tidy) <| by tidy
 #align category_theory.limits.diagram_iso_parallel_pair CategoryTheory.Limits.diagramIsoParallelPair
+-/
 
 #print CategoryTheory.Limits.parallelPairHom /-
 /-- Construct a morphism between parallel pairs. -/
@@ -263,20 +293,25 @@ def parallelPairHom {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X
 #align category_theory.limits.parallel_pair_hom CategoryTheory.Limits.parallelPairHom
 -/
 
+#print CategoryTheory.Limits.parallelPairHom_app_zero /-
 @[simp]
 theorem parallelPairHom_app_zero {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
     (q : Y ⟶ Y') (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') :
     (parallelPairHom f g f' g' p q wf wg).app zero = p :=
   rfl
 #align category_theory.limits.parallel_pair_hom_app_zero CategoryTheory.Limits.parallelPairHom_app_zero
+-/
 
+#print CategoryTheory.Limits.parallelPairHom_app_one /-
 @[simp]
 theorem parallelPairHom_app_one {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
     (q : Y ⟶ Y') (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') :
     (parallelPairHom f g f' g' p q wf wg).app one = q :=
   rfl
 #align category_theory.limits.parallel_pair_hom_app_one CategoryTheory.Limits.parallelPairHom_app_one
+-/
 
+#print CategoryTheory.Limits.parallelPair.ext /-
 /-- Construct a natural isomorphism between functors out of the walking parallel pair from
 its components. -/
 @[simps]
@@ -286,6 +321,7 @@ def parallelPair.ext {F G : WalkingParallelPair ⥤ C} (zero : F.obj zero ≅ G.
   NatIso.ofComponents (by rintro ⟨j⟩; exacts [zero, one])
     (by rintro ⟨j₁⟩ ⟨j₂⟩ ⟨f⟩ <;> simp [left, right])
 #align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.ext
+-/
 
 #print CategoryTheory.Limits.parallelPair.eqOfHomEq /-
 /-- Construct a natural isomorphism between `parallel_pair f g` and `parallel_pair f' g'` given
@@ -313,49 +349,65 @@ abbrev Cofork (f g : X ⟶ Y) :=
 
 variable {f g : X ⟶ Y}
 
+#print CategoryTheory.Limits.Fork.ι /-
 /-- A fork `t` on the parallel pair `f g : X ⟶ Y` consists of two morphisms `t.π.app zero : t.X ⟶ X`
     and `t.π.app one : t.X ⟶ Y`. Of these, only the first one is interesting, and we give it the
     shorter name `fork.ι t`. -/
 def Fork.ι (t : Fork f g) :=
   t.π.app zero
 #align category_theory.limits.fork.ι CategoryTheory.Limits.Fork.ι
+-/
 
+#print CategoryTheory.Limits.Fork.app_zero_eq_ι /-
 @[simp]
 theorem Fork.app_zero_eq_ι (t : Fork f g) : t.π.app zero = t.ι :=
   rfl
 #align category_theory.limits.fork.app_zero_eq_ι CategoryTheory.Limits.Fork.app_zero_eq_ι
+-/
 
+#print CategoryTheory.Limits.Cofork.π /-
 /-- A cofork `t` on the parallel_pair `f g : X ⟶ Y` consists of two morphisms
     `t.ι.app zero : X ⟶ t.X` and `t.ι.app one : Y ⟶ t.X`. Of these, only the second one is
     interesting, and we give it the shorter name `cofork.π t`. -/
 def Cofork.π (t : Cofork f g) :=
   t.ι.app one
 #align category_theory.limits.cofork.π CategoryTheory.Limits.Cofork.π
+-/
 
+#print CategoryTheory.Limits.Cofork.app_one_eq_π /-
 @[simp]
 theorem Cofork.app_one_eq_π (t : Cofork f g) : t.ι.app one = t.π :=
   rfl
 #align category_theory.limits.cofork.app_one_eq_π CategoryTheory.Limits.Cofork.app_one_eq_π
+-/
 
+#print CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left /-
 @[simp]
 theorem Fork.app_one_eq_ι_comp_left (s : Fork f g) : s.π.app one = s.ι ≫ f := by
   rw [← s.app_zero_eq_ι, ← s.w left, parallel_pair_map_left]
 #align category_theory.limits.fork.app_one_eq_ι_comp_left CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left
+-/
 
+#print CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right /-
 @[reassoc]
 theorem Fork.app_one_eq_ι_comp_right (s : Fork f g) : s.π.app one = s.ι ≫ g := by
   rw [← s.app_zero_eq_ι, ← s.w right, parallel_pair_map_right]
 #align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right
+-/
 
+#print CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_left /-
 @[simp]
 theorem Cofork.app_zero_eq_comp_π_left (s : Cofork f g) : s.ι.app zero = f ≫ s.π := by
   rw [← s.app_one_eq_π, ← s.w left, parallel_pair_map_left]
 #align category_theory.limits.cofork.app_zero_eq_comp_π_left CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_left
+-/
 
+#print CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_right /-
 @[reassoc]
 theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g ≫ s.π := by
   rw [← s.app_one_eq_π, ← s.w right, parallel_pair_map_right]
 #align category_theory.limits.cofork.app_zero_eq_comp_π_right CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_right
+-/
 
 #print CategoryTheory.Limits.Fork.ofι /-
 /-- A fork on `f g : X ⟶ Y` is determined by the morphism `ι : P ⟶ X` satisfying `ι ≫ f = ι ≫ g`.
@@ -389,27 +441,36 @@ def Cofork.ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : Cofork f g
 #align category_theory.limits.cofork.of_π CategoryTheory.Limits.Cofork.ofπ
 -/
 
+#print CategoryTheory.Limits.Fork.ι_ofι /-
 -- See note [dsimp, simp]
 @[simp]
 theorem Fork.ι_ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : (Fork.ofι ι w).ι = ι :=
   rfl
 #align category_theory.limits.fork.ι_of_ι CategoryTheory.Limits.Fork.ι_ofι
+-/
 
+#print CategoryTheory.Limits.Cofork.π_ofπ /-
 @[simp]
 theorem Cofork.π_ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : (Cofork.ofπ π w).π = π :=
   rfl
 #align category_theory.limits.cofork.π_of_π CategoryTheory.Limits.Cofork.π_ofπ
+-/
 
+#print CategoryTheory.Limits.Fork.condition /-
 @[simp, reassoc]
 theorem Fork.condition (t : Fork f g) : t.ι ≫ f = t.ι ≫ g := by
   rw [← t.app_one_eq_ι_comp_left, ← t.app_one_eq_ι_comp_right]
 #align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.condition
+-/
 
+#print CategoryTheory.Limits.Cofork.condition /-
 @[simp, reassoc]
 theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
   rw [← t.app_zero_eq_comp_π_left, ← t.app_zero_eq_comp_π_right]
 #align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.condition
+-/
 
+#print CategoryTheory.Limits.Fork.equalizer_ext /-
 /-- To check whether two maps are equalized by both maps of a fork, it suffices to check it for the
     first map -/
 theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫ s.ι = l ≫ s.ι) :
@@ -417,7 +478,9 @@ theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫
   | zero => h
   | one => by rw [s.app_one_eq_ι_comp_left, reassoc_of h]
 #align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_ext
+-/
 
+#print CategoryTheory.Limits.Cofork.coequalizer_ext /-
 /-- To check whether two maps are coequalized by both maps of a cofork, it suffices to check it for
     the second map -/
 theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.pt ⟶ W}
@@ -425,53 +488,71 @@ theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.pt ⟶ W}
   | zero => by simp only [s.app_zero_eq_comp_π_left, category.assoc, h]
   | one => h
 #align category_theory.limits.cofork.coequalizer_ext CategoryTheory.Limits.Cofork.coequalizer_ext
+-/
 
+#print CategoryTheory.Limits.Fork.IsLimit.hom_ext /-
 theorem Fork.IsLimit.hom_ext {s : Fork f g} (hs : IsLimit s) {W : C} {k l : W ⟶ s.pt}
     (h : k ≫ Fork.ι s = l ≫ Fork.ι s) : k = l :=
   hs.hom_ext <| Fork.equalizer_ext _ h
 #align category_theory.limits.fork.is_limit.hom_ext CategoryTheory.Limits.Fork.IsLimit.hom_ext
+-/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.hom_ext /-
 theorem Cofork.IsColimit.hom_ext {s : Cofork f g} (hs : IsColimit s) {W : C} {k l : s.pt ⟶ W}
     (h : Cofork.π s ≫ k = Cofork.π s ≫ l) : k = l :=
   hs.hom_ext <| Cofork.coequalizer_ext _ h
 #align category_theory.limits.cofork.is_colimit.hom_ext CategoryTheory.Limits.Cofork.IsColimit.hom_ext
+-/
 
+#print CategoryTheory.Limits.Fork.IsLimit.lift_ι /-
 @[simp, reassoc]
 theorem Fork.IsLimit.lift_ι {s t : Fork f g} (hs : IsLimit s) : hs.lift t ≫ s.ι = t.ι :=
   hs.fac _ _
 #align category_theory.limits.fork.is_limit.lift_ι CategoryTheory.Limits.Fork.IsLimit.lift_ι
+-/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.π_desc /-
 @[simp, reassoc]
 theorem Cofork.IsColimit.π_desc {s t : Cofork f g} (hs : IsColimit s) : s.π ≫ hs.desc t = t.π :=
   hs.fac _ _
 #align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_desc
+-/
 
+#print CategoryTheory.Limits.Fork.IsLimit.lift' /-
 /-- If `s` is a limit fork over `f` and `g`, then a morphism `k : W ⟶ X` satisfying
     `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ s.X` such that `l ≫ fork.ι s = k`. -/
 def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
     { l : W ⟶ s.pt // l ≫ Fork.ι s = k } :=
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _⟩
 #align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'
+-/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.desc' /-
 /-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
     `f ≫ k = g ≫ k` induces a morphism `l : s.X ⟶ W` such that `cofork.π s ≫ l = k`. -/
 def Cofork.IsColimit.desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
     (h : f ≫ k = g ≫ k) : { l : s.pt ⟶ W // Cofork.π s ≫ l = k } :=
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _⟩
 #align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'
+-/
 
+#print CategoryTheory.Limits.Fork.IsLimit.existsUnique /-
 theorem Fork.IsLimit.existsUnique {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X)
     (h : k ≫ f = k ≫ g) : ∃! l : W ⟶ s.pt, l ≫ Fork.ι s = k :=
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _, fun m hm =>
     Fork.IsLimit.hom_ext hs <| hm.symm ▸ (hs.fac (Fork.ofι _ h) WalkingParallelPair.zero).symm⟩
 #align category_theory.limits.fork.is_limit.exists_unique CategoryTheory.Limits.Fork.IsLimit.existsUnique
+-/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.existsUnique /-
 theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
     (h : f ≫ k = g ≫ k) : ∃! d : s.pt ⟶ W, Cofork.π s ≫ d = k :=
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _, fun m hm =>
     Cofork.IsColimit.hom_ext hs <| hm.symm ▸ (hs.fac (Cofork.ofπ _ h) WalkingParallelPair.one).symm⟩
 #align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUnique
+-/
 
+#print CategoryTheory.Limits.Fork.IsLimit.mk /-
 /-- This is a slightly more convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content -/
 @[simps lift]
@@ -484,7 +565,9 @@ def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.pt ⟶ t.pt)
         erw [← s.w left, ← t.w left, ← category.assoc, fac] <;> rfl
     uniq := fun s m j => by tidy }
 #align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mk
+-/
 
+#print CategoryTheory.Limits.Fork.IsLimit.mk' /-
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
@@ -492,7 +575,9 @@ def Fork.IsLimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Fork f g)
     (create : ∀ s : Fork f g, { l // l ≫ t.ι = s.ι ∧ ∀ {m}, m ≫ t.ι = s.ι → m = l }) : IsLimit t :=
   Fork.IsLimit.mk t (fun s => (create s).1) (fun s => (create s).2.1) fun s m w => (create s).2.2 w
 #align category_theory.limits.fork.is_limit.mk' CategoryTheory.Limits.Fork.IsLimit.mk'
+-/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.mk /-
 /-- This is a slightly more convenient method to verify that a cofork is a colimit cocone. It
     only asks for a proof of facts that carry any mathematical content -/
 def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.pt)
@@ -504,7 +589,9 @@ def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.
         (fac s)
     uniq := by tidy }
 #align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mk
+-/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.mk' /-
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
@@ -515,18 +602,23 @@ def Cofork.IsColimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Cofork f g)
   Cofork.IsColimit.mk t (fun s => (create s).1) (fun s => (create s).2.1) fun s m w =>
     (create s).2.2 w
 #align category_theory.limits.cofork.is_colimit.mk' CategoryTheory.Limits.Cofork.IsColimit.mk'
+-/
 
+#print CategoryTheory.Limits.Fork.IsLimit.ofExistsUnique /-
 /-- Noncomputably make a limit cone from the existence of unique factorizations. -/
 def Fork.IsLimit.ofExistsUnique {t : Fork f g}
     (hs : ∀ s : Fork f g, ∃! l : s.pt ⟶ t.pt, l ≫ Fork.ι t = Fork.ι s) : IsLimit t := by
   choose d hd hd' using hs; exact fork.is_limit.mk _ d hd fun s m hm => hd' _ _ hm
 #align category_theory.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUnique
+-/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.ofExistsUnique /-
 /-- Noncomputably make a colimit cocone from the existence of unique factorizations. -/
 def Cofork.IsColimit.ofExistsUnique {t : Cofork f g}
     (hs : ∀ s : Cofork f g, ∃! d : t.pt ⟶ s.pt, Cofork.π t ≫ d = Cofork.π s) : IsColimit t := by
   choose d hd hd' using hs; exact cofork.is_colimit.mk _ d hd fun s m hm => hd' _ _ hm
 #align category_theory.limits.cofork.is_colimit.of_exists_unique CategoryTheory.Limits.Cofork.IsColimit.ofExistsUnique
+-/
 
 #print CategoryTheory.Limits.Fork.IsLimit.homIso /-
 /--
@@ -546,12 +638,14 @@ def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t
 #align category_theory.limits.fork.is_limit.hom_iso CategoryTheory.Limits.Fork.IsLimit.homIso
 -/
 
+#print CategoryTheory.Limits.Fork.IsLimit.homIso_natural /-
 /-- The bijection of `fork.is_limit.hom_iso` is natural in `Z`. -/
 theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t)
     {Z Z' : C} (q : Z' ⟶ Z) (k : Z ⟶ t.pt) :
     (Fork.IsLimit.homIso ht _ (q ≫ k) : Z' ⟶ X) = q ≫ (Fork.IsLimit.homIso ht _ k : Z ⟶ X) :=
   Category.assoc _ _ _
 #align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_natural
+-/
 
 #print CategoryTheory.Limits.Cofork.IsColimit.homIso /-
 /-- Given a colimit cocone for the pair `f g : X ⟶ Y`, for any `Z`, morphisms from the cocone point
@@ -570,6 +664,7 @@ def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsC
 #align category_theory.limits.cofork.is_colimit.hom_iso CategoryTheory.Limits.Cofork.IsColimit.homIso
 -/
 
+#print CategoryTheory.Limits.Cofork.IsColimit.homIso_natural /-
 /-- The bijection of `cofork.is_colimit.hom_iso` is natural in `Z`. -/
 theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} {Z Z' : C}
     (q : Z ⟶ Z') (ht : IsColimit t) (k : t.pt ⟶ Z) :
@@ -577,7 +672,9 @@ theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f
       (Cofork.IsColimit.homIso ht _ k : Y ⟶ Z) ≫ q :=
   (Category.assoc _ _ _).symm
 #align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_natural
+-/
 
+#print CategoryTheory.Limits.Cone.ofFork /-
 /-- This is a helper construction that can be useful when verifying that a category has all
     equalizers. Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)`, and a fork on `F.map left` and `F.map right`,
@@ -592,7 +689,9 @@ def Cone.ofFork {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map ri
     { app := fun X => t.π.app X ≫ eqToHom (by tidy)
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
 #align category_theory.limits.cone.of_fork CategoryTheory.Limits.Cone.ofFork
+-/
 
+#print CategoryTheory.Limits.Cocone.ofCofork /-
 /-- This is a helper construction that can be useful when verifying that a category has all
     coequalizers. Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)`, and a cofork on `F.map left` and `F.map right`,
@@ -608,19 +707,25 @@ def Cocone.ofCofork {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.
     { app := fun X => eqToHom (by tidy) ≫ t.ι.app X
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
 #align category_theory.limits.cocone.of_cofork CategoryTheory.Limits.Cocone.ofCofork
+-/
 
+#print CategoryTheory.Limits.Cone.ofFork_π /-
 @[simp]
 theorem Cone.ofFork_π {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map right)) (j) :
     (Cone.ofFork t).π.app j = t.π.app j ≫ eqToHom (by tidy) :=
   rfl
 #align category_theory.limits.cone.of_fork_π CategoryTheory.Limits.Cone.ofFork_π
+-/
 
+#print CategoryTheory.Limits.Cocone.ofCofork_ι /-
 @[simp]
 theorem Cocone.ofCofork_ι {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.map right))
     (j) : (Cocone.ofCofork t).ι.app j = eqToHom (by tidy) ≫ t.ι.app j :=
   rfl
 #align category_theory.limits.cocone.of_cofork_ι CategoryTheory.Limits.Cocone.ofCofork_ι
+-/
 
+#print CategoryTheory.Limits.Fork.ofCone /-
 /-- Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)` and a cone on `F`, we get a fork on
     `F.map left` and `F.map right`. -/
@@ -629,7 +734,9 @@ def Fork.ofCone {F : WalkingParallelPair ⥤ C} (t : Cone F) : Fork (F.map left)
   pt := t.pt
   π := { app := fun X => t.π.app X ≫ eqToHom (by tidy) }
 #align category_theory.limits.fork.of_cone CategoryTheory.Limits.Fork.ofCone
+-/
 
+#print CategoryTheory.Limits.Cofork.ofCocone /-
 /-- Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)` and a cocone on `F`, we get a cofork on
     `F.map left` and `F.map right`. -/
@@ -638,31 +745,41 @@ def Cofork.ofCocone {F : WalkingParallelPair ⥤ C} (t : Cocone F) : Cofork (F.m
   pt := t.pt
   ι := { app := fun X => eqToHom (by tidy) ≫ t.ι.app X }
 #align category_theory.limits.cofork.of_cocone CategoryTheory.Limits.Cofork.ofCocone
+-/
 
+#print CategoryTheory.Limits.Fork.ofCone_π /-
 @[simp]
 theorem Fork.ofCone_π {F : WalkingParallelPair ⥤ C} (t : Cone F) (j) :
     (Fork.ofCone t).π.app j = t.π.app j ≫ eqToHom (by tidy) :=
   rfl
 #align category_theory.limits.fork.of_cone_π CategoryTheory.Limits.Fork.ofCone_π
+-/
 
+#print CategoryTheory.Limits.Cofork.ofCocone_ι /-
 @[simp]
 theorem Cofork.ofCocone_ι {F : WalkingParallelPair ⥤ C} (t : Cocone F) (j) :
     (Cofork.ofCocone t).ι.app j = eqToHom (by tidy) ≫ t.ι.app j :=
   rfl
 #align category_theory.limits.cofork.of_cocone_ι CategoryTheory.Limits.Cofork.ofCocone_ι
+-/
 
+#print CategoryTheory.Limits.Fork.ι_postcompose /-
 @[simp]
 theorem Fork.ι_postcompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
     {c : Fork f g} : Fork.ι ((Cones.postcompose α).obj c) = c.ι ≫ α.app _ :=
   rfl
 #align category_theory.limits.fork.ι_postcompose CategoryTheory.Limits.Fork.ι_postcompose
+-/
 
+#print CategoryTheory.Limits.Cofork.π_precompose /-
 @[simp]
 theorem Cofork.π_precompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
     {c : Cofork f' g'} : Cofork.π ((Cocones.precompose α).obj c) = α.app _ ≫ c.π :=
   rfl
 #align category_theory.limits.cofork.π_precompose CategoryTheory.Limits.Cofork.π_precompose
+-/
 
+#print CategoryTheory.Limits.Fork.mkHom /-
 /-- Helper function for constructing morphisms between equalizer forks.
 -/
 @[simps]
@@ -674,7 +791,9 @@ def Fork.mkHom {s t : Fork f g} (k : s.pt ⟶ t.pt) (w : k ≫ t.ι = s.ι) : s
     · exact w
     · simp only [fork.app_one_eq_ι_comp_left, reassoc_of w]
 #align category_theory.limits.fork.mk_hom CategoryTheory.Limits.Fork.mkHom
+-/
 
+#print CategoryTheory.Limits.Fork.ext /-
 /-- To construct an isomorphism between forks,
 it suffices to give an isomorphism between the cone points
 and check that it commutes with the `ι` morphisms.
@@ -685,12 +804,16 @@ def Fork.ext {s t : Fork f g} (i : s.pt ≅ t.pt) (w : i.Hom ≫ t.ι = s.ι) :
   Hom := Fork.mkHom i.Hom w
   inv := Fork.mkHom i.inv (by rw [← w, iso.inv_hom_id_assoc])
 #align category_theory.limits.fork.ext CategoryTheory.Limits.Fork.ext
+-/
 
+#print CategoryTheory.Limits.Fork.isoForkOfι /-
 /-- Every fork is isomorphic to one of the form `fork.of_ι _ _`. -/
 def Fork.isoForkOfι (c : Fork f g) : c ≅ Fork.ofι c.ι c.condition :=
   Fork.ext (by simp only [fork.of_ι_X, functor.const_obj_obj]) (by simp)
 #align category_theory.limits.fork.iso_fork_of_ι CategoryTheory.Limits.Fork.isoForkOfι
+-/
 
+#print CategoryTheory.Limits.Cofork.mkHom /-
 /-- Helper function for constructing morphisms between coequalizer coforks.
 -/
 @[simps]
@@ -702,15 +825,21 @@ def Cofork.mkHom {s t : Cofork f g} (k : s.pt ⟶ t.pt) (w : s.π ≫ k = t.π)
     · simp [cofork.app_zero_eq_comp_π_left, w]
     · exact w
 #align category_theory.limits.cofork.mk_hom CategoryTheory.Limits.Cofork.mkHom
+-/
 
+#print CategoryTheory.Limits.Fork.hom_comp_ι /-
 @[simp, reassoc]
 theorem Fork.hom_comp_ι {s t : Fork f g} (f : s ⟶ t) : f.Hom ≫ t.ι = s.ι := by tidy
 #align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ι
+-/
 
+#print CategoryTheory.Limits.Fork.π_comp_hom /-
 @[simp, reassoc]
 theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.π := by tidy
 #align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_hom
+-/
 
+#print CategoryTheory.Limits.Cofork.ext /-
 /-- To construct an isomorphism between coforks,
 it suffices to give an isomorphism between the cocone points
 and check that it commutes with the `π` morphisms.
@@ -721,11 +850,14 @@ def Cofork.ext {s t : Cofork f g} (i : s.pt ≅ t.pt) (w : s.π ≫ i.Hom = t.π
   Hom := Cofork.mkHom i.Hom w
   inv := Cofork.mkHom i.inv (by rw [iso.comp_inv_eq, w])
 #align category_theory.limits.cofork.ext CategoryTheory.Limits.Cofork.ext
+-/
 
+#print CategoryTheory.Limits.Cofork.isoCoforkOfπ /-
 /-- Every cofork is isomorphic to one of the form `cofork.of_π _ _`. -/
 def Cofork.isoCoforkOfπ (c : Cofork f g) : c ≅ Cofork.ofπ c.π c.condition :=
   Cofork.ext (by simp only [cofork.of_π_X, functor.const_obj_obj]) (by dsimp <;> simp)
 #align category_theory.limits.cofork.iso_cofork_of_π CategoryTheory.Limits.Cofork.isoCoforkOfπ
+-/
 
 variable (f g)
 
@@ -766,15 +898,19 @@ abbrev equalizer.fork : Fork f g :=
 #align category_theory.limits.equalizer.fork CategoryTheory.Limits.equalizer.fork
 -/
 
+#print CategoryTheory.Limits.equalizer.fork_ι /-
 @[simp]
 theorem equalizer.fork_ι : (equalizer.fork f g).ι = equalizer.ι f g :=
   rfl
 #align category_theory.limits.equalizer.fork_ι CategoryTheory.Limits.equalizer.fork_ι
+-/
 
+#print CategoryTheory.Limits.equalizer.fork_π_app_zero /-
 @[simp]
 theorem equalizer.fork_π_app_zero : (equalizer.fork f g).π.app zero = equalizer.ι f g :=
   rfl
 #align category_theory.limits.equalizer.fork_π_app_zero CategoryTheory.Limits.equalizer.fork_π_app_zero
+-/
 
 #print CategoryTheory.Limits.equalizer.condition /-
 @[reassoc]
@@ -847,10 +983,12 @@ section
 
 variable {f g}
 
+#print CategoryTheory.Limits.mono_of_isLimit_fork /-
 /-- The equalizer morphism in any limit cone is a monomorphism. -/
 theorem mono_of_isLimit_fork {c : Fork f g} (i : IsLimit c) : Mono (Fork.ι c) :=
   { right_cancellation := fun Z h k w => Fork.IsLimit.hom_ext i w }
 #align category_theory.limits.mono_of_is_limit_fork CategoryTheory.Limits.mono_of_isLimit_fork
+-/
 
 end
 
@@ -873,11 +1011,13 @@ def isLimitIdFork (h : f = g) : IsLimit (idFork h) :=
 #align category_theory.limits.is_limit_id_fork CategoryTheory.Limits.isLimitIdFork
 -/
 
+#print CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_eq /-
 /-- Every equalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_eq (h₀ : f = g) {c : Fork f g} (h : IsLimit c) :
     IsIso c.ι :=
   IsIso.of_iso <| IsLimit.conePointUniqueUpToIso h <| isLimitIdFork h₀
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_eq CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_eq
+-/
 
 #print CategoryTheory.Limits.equalizer.ι_of_eq /-
 /-- The equalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
@@ -886,20 +1026,26 @@ theorem equalizer.ι_of_eq [HasEqualizer f g] (h : f = g) : IsIso (equalizer.ι
 #align category_theory.limits.equalizer.ι_of_eq CategoryTheory.Limits.equalizer.ι_of_eq
 -/
 
+#print CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_self /-
 /-- Every equalizer of `(f, f)` is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_self {c : Fork f f} (h : IsLimit c) : IsIso c.ι :=
   isIso_limit_cone_parallelPair_of_eq rfl h
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_self CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_self
+-/
 
+#print CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_epi /-
 /-- An equalizer that is an epimorphism is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_epi {c : Fork f g} (h : IsLimit c) [Epi c.ι] : IsIso c.ι :=
   isIso_limit_cone_parallelPair_of_eq ((cancel_epi _).1 (Fork.condition c)) h
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_epi
+-/
 
+#print CategoryTheory.Limits.eq_of_epi_fork_ι /-
 /-- Two morphisms are equal if there is a fork whose inclusion is epi. -/
 theorem eq_of_epi_fork_ι (t : Fork f g) [Epi (Fork.ι t)] : f = g :=
   (cancel_epi (Fork.ι t)).1 <| Fork.condition t
 #align category_theory.limits.eq_of_epi_fork_ι CategoryTheory.Limits.eq_of_epi_fork_ι
+-/
 
 #print CategoryTheory.Limits.eq_of_epi_equalizer /-
 /-- If the equalizer of two morphisms is an epimorphism, then the two morphisms are equal. -/
@@ -984,15 +1130,19 @@ abbrev coequalizer.cofork : Cofork f g :=
 #align category_theory.limits.coequalizer.cofork CategoryTheory.Limits.coequalizer.cofork
 -/
 
+#print CategoryTheory.Limits.coequalizer.cofork_π /-
 @[simp]
 theorem coequalizer.cofork_π : (coequalizer.cofork f g).π = coequalizer.π f g :=
   rfl
 #align category_theory.limits.coequalizer.cofork_π CategoryTheory.Limits.coequalizer.cofork_π
+-/
 
+#print CategoryTheory.Limits.coequalizer.cofork_ι_app_one /-
 @[simp]
 theorem coequalizer.cofork_ι_app_one : (coequalizer.cofork f g).ι.app one = coequalizer.π f g :=
   rfl
 #align category_theory.limits.coequalizer.cofork_ι_app_one CategoryTheory.Limits.coequalizer.cofork_ι_app_one
+-/
 
 #print CategoryTheory.Limits.coequalizer.condition /-
 @[reassoc]
@@ -1076,10 +1226,12 @@ section
 
 variable {f g}
 
+#print CategoryTheory.Limits.epi_of_isColimit_cofork /-
 /-- The coequalizer morphism in any colimit cocone is an epimorphism. -/
 theorem epi_of_isColimit_cofork {c : Cofork f g} (i : IsColimit c) : Epi c.π :=
   { left_cancellation := fun Z h k w => Cofork.IsColimit.hom_ext i w }
 #align category_theory.limits.epi_of_is_colimit_cofork CategoryTheory.Limits.epi_of_isColimit_cofork
+-/
 
 end
 
@@ -1102,11 +1254,13 @@ def isColimitIdCofork (h : f = g) : IsColimit (idCofork h) :=
 #align category_theory.limits.is_colimit_id_cofork CategoryTheory.Limits.isColimitIdCofork
 -/
 
+#print CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_eq /-
 /-- Every coequalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem isIso_colimit_cocone_parallelPair_of_eq (h₀ : f = g) {c : Cofork f g} (h : IsColimit c) :
     IsIso c.π :=
   IsIso.of_iso <| IsColimit.coconePointUniqueUpToIso (isColimitIdCofork h₀) h
 #align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_eq CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_eq
+-/
 
 #print CategoryTheory.Limits.coequalizer.π_of_eq /-
 /-- The coequalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
@@ -1115,21 +1269,27 @@ theorem coequalizer.π_of_eq [HasCoequalizer f g] (h : f = g) : IsIso (coequaliz
 #align category_theory.limits.coequalizer.π_of_eq CategoryTheory.Limits.coequalizer.π_of_eq
 -/
 
+#print CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_self /-
 /-- Every coequalizer of `(f, f)` is an isomorphism. -/
 theorem isIso_colimit_cocone_parallelPair_of_self {c : Cofork f f} (h : IsColimit c) : IsIso c.π :=
   isIso_colimit_cocone_parallelPair_of_eq rfl h
 #align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_self CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_self
+-/
 
+#print CategoryTheory.Limits.isIso_limit_cocone_parallelPair_of_epi /-
 /-- A coequalizer that is a monomorphism is an isomorphism. -/
 theorem isIso_limit_cocone_parallelPair_of_epi {c : Cofork f g} (h : IsColimit c) [Mono c.π] :
     IsIso c.π :=
   isIso_colimit_cocone_parallelPair_of_eq ((cancel_mono _).1 (Cofork.condition c)) h
 #align category_theory.limits.is_iso_limit_cocone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cocone_parallelPair_of_epi
+-/
 
+#print CategoryTheory.Limits.eq_of_mono_cofork_π /-
 /-- Two morphisms are equal if there is a cofork whose projection is mono. -/
 theorem eq_of_mono_cofork_π (t : Cofork f g) [Mono (Cofork.π t)] : f = g :=
   (cancel_mono (Cofork.π t)).1 <| Cofork.condition t
 #align category_theory.limits.eq_of_mono_cofork_π CategoryTheory.Limits.eq_of_mono_cofork_π
+-/
 
 #print CategoryTheory.Limits.eq_of_mono_coequalizer /-
 /-- If the coequalizer of two morphisms is a monomorphism, then the two morphisms are equal. -/
@@ -1181,6 +1341,7 @@ section Comparison
 
 variable {D : Type u₂} [Category.{v₂} D] (G : C ⥤ D)
 
+#print CategoryTheory.Limits.equalizerComparison /-
 /-- The comparison morphism for the equalizer of `f,g`.
 This is an isomorphism iff `G` preserves the equalizer of `f,g`; see
 `category_theory/limits/preserves/shapes/equalizers.lean`
@@ -1189,13 +1350,17 @@ def equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
     G.obj (equalizer f g) ⟶ equalizer (G.map f) (G.map g) :=
   equalizer.lift (G.map (equalizer.ι _ _)) (by simp only [← G.map_comp, equalizer.condition])
 #align category_theory.limits.equalizer_comparison CategoryTheory.Limits.equalizerComparison
+-/
 
+#print CategoryTheory.Limits.equalizerComparison_comp_π /-
 @[simp, reassoc]
 theorem equalizerComparison_comp_π [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
     equalizerComparison f g G ≫ equalizer.ι (G.map f) (G.map g) = G.map (equalizer.ι f g) :=
   equalizer.lift_ι _ _
 #align category_theory.limits.equalizer_comparison_comp_π CategoryTheory.Limits.equalizerComparison_comp_π
+-/
 
+#print CategoryTheory.Limits.map_lift_equalizerComparison /-
 @[simp, reassoc]
 theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] {Z : C}
     {h : Z ⟶ X} (w : h ≫ f = h ≫ g) :
@@ -1203,19 +1368,25 @@ theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f)
       equalizer.lift (G.map h) (by simp only [← G.map_comp, w]) :=
   by ext; simp [← G.map_comp]
 #align category_theory.limits.map_lift_equalizer_comparison CategoryTheory.Limits.map_lift_equalizerComparison
+-/
 
+#print CategoryTheory.Limits.coequalizerComparison /-
 /-- The comparison morphism for the coequalizer of `f,g`. -/
 def coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer (G.map f) (G.map g) ⟶ G.obj (coequalizer f g) :=
   coequalizer.desc (G.map (coequalizer.π _ _)) (by simp only [← G.map_comp, coequalizer.condition])
 #align category_theory.limits.coequalizer_comparison CategoryTheory.Limits.coequalizerComparison
+-/
 
+#print CategoryTheory.Limits.ι_comp_coequalizerComparison /-
 @[simp, reassoc]
 theorem ι_comp_coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer.π _ _ ≫ coequalizerComparison f g G = G.map (coequalizer.π _ _) :=
   coequalizer.π_desc _ _
 #align category_theory.limits.ι_comp_coequalizer_comparison CategoryTheory.Limits.ι_comp_coequalizerComparison
+-/
 
+#print CategoryTheory.Limits.coequalizerComparison_map_desc /-
 @[simp, reassoc]
 theorem coequalizerComparison_map_desc [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)]
     {Z : C} {h : Y ⟶ Z} (w : f ≫ h = g ≫ h) :
@@ -1223,6 +1394,7 @@ theorem coequalizerComparison_map_desc [HasCoequalizer f g] [HasCoequalizer (G.m
       coequalizer.desc (G.map h) (by simp only [← G.map_comp, w]) :=
   by ext; simp [← G.map_comp]
 #align category_theory.limits.coequalizer_comparison_map_desc CategoryTheory.Limits.coequalizerComparison_map_desc
+-/
 
 end Comparison
 
@@ -1273,10 +1445,12 @@ def coneOfIsSplitMono : Fork (𝟙 Y) (retraction f ≫ f) :=
 #align category_theory.limits.cone_of_is_split_mono CategoryTheory.Limits.coneOfIsSplitMono
 -/
 
+#print CategoryTheory.Limits.coneOfIsSplitMono_ι /-
 @[simp]
 theorem coneOfIsSplitMono_ι : (coneOfIsSplitMono f).ι = f :=
   rfl
 #align category_theory.limits.cone_of_is_split_mono_ι CategoryTheory.Limits.coneOfIsSplitMono_ι
+-/
 
 #print CategoryTheory.Limits.isSplitMonoEqualizes /-
 /-- A split mono `f` equalizes `(retraction f ≫ f)` and `(𝟙 Y)`.
@@ -1326,6 +1500,7 @@ theorem hasEqualizer_comp_mono [HasEqualizer f g] {Z : C} (h : Y ⟶ Z) [Mono h]
 #align category_theory.limits.has_equalizer_comp_mono CategoryTheory.Limits.hasEqualizer_comp_mono
 -/
 
+#print CategoryTheory.Limits.splitMonoOfIdempotentOfIsLimitFork /-
 /-- An equalizer of an idempotent morphism and the identity is split mono. -/
 @[simps]
 def splitMonoOfIdempotentOfIsLimitFork {X : C} {f : X ⟶ X} (hf : f ≫ f = f) {c : Fork (𝟙 X) f}
@@ -1337,6 +1512,7 @@ def splitMonoOfIdempotentOfIsLimitFork {X : C} {f : X ⟶ X} (hf : f ≫ f = f)
     rw [← cancel_mono_id c.ι, category.assoc, fork.is_limit.lift_ι, fork.ι_of_ι, ← c.condition]
     exact category.comp_id c.ι
 #align category_theory.limits.split_mono_of_idempotent_of_is_limit_fork CategoryTheory.Limits.splitMonoOfIdempotentOfIsLimitFork
+-/
 
 #print CategoryTheory.Limits.splitMonoOfIdempotentEqualizer /-
 /-- The equalizer of an idempotent morphism and the identity is split mono. -/
@@ -1361,10 +1537,12 @@ def coconeOfIsSplitEpi : Cofork (𝟙 X) (f ≫ section_ f) :=
 #align category_theory.limits.cocone_of_is_split_epi CategoryTheory.Limits.coconeOfIsSplitEpi
 -/
 
+#print CategoryTheory.Limits.coconeOfIsSplitEpi_π /-
 @[simp]
 theorem coconeOfIsSplitEpi_π : (coconeOfIsSplitEpi f).π = f :=
   rfl
 #align category_theory.limits.cocone_of_is_split_epi_π CategoryTheory.Limits.coconeOfIsSplitEpi_π
+-/
 
 #print CategoryTheory.Limits.isSplitEpiCoequalizes /-
 /-- A split epi `f` coequalizes `(f ≫ section_ f)` and `(𝟙 X)`.
@@ -1420,6 +1598,7 @@ theorem hasCoequalizer_epi_comp [HasCoequalizer f g] {W : C} (h : W ⟶ X) [hm :
 
 variable (C f g)
 
+#print CategoryTheory.Limits.splitEpiOfIdempotentOfIsColimitCofork /-
 /-- A coequalizer of an idempotent morphism and the identity is split epi. -/
 @[simps]
 def splitEpiOfIdempotentOfIsColimitCofork {X : C} {f : X ⟶ X} (hf : f ≫ f = f) {c : Cofork (𝟙 X) f}
@@ -1432,6 +1611,7 @@ def splitEpiOfIdempotentOfIsColimitCofork {X : C} {f : X ⟶ X} (hf : f ≫ f =
       c.condition]
     exact category.id_comp _
 #align category_theory.limits.split_epi_of_idempotent_of_is_colimit_cofork CategoryTheory.Limits.splitEpiOfIdempotentOfIsColimitCofork
+-/
 
 #print CategoryTheory.Limits.splitEpiOfIdempotentCoequalizer /-
 /-- The coequalizer of an idempotent morphism and the identity is split epi. -/

f4758115

bump to nightly-2023-06-01-16

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

b9c87c70

Diff

@@ -121,9 +121,9 @@ right.
 -/
 def walkingParallelPairOp : WalkingParallelPair ⥤ WalkingParallelPairᵒᵖ
     where
-  obj x := op <| by cases x; exacts[one, zero]
+  obj x := op <| by cases x; exacts [one, zero]
   map i j f := by cases f <;> apply Quiver.Hom.op;
-    exacts[left, right, walking_parallel_pair_hom.id _]
+    exacts [left, right, walking_parallel_pair_hom.id _]
   map_comp' := by rintro (_ | _) (_ | _) (_ | _) (_ | _ | _) (_ | _ | _) <;> rfl
 #align category_theory.limits.walking_parallel_pair_op CategoryTheory.Limits.walkingParallelPairOp
 -/
@@ -283,7 +283,7 @@ its components. -/
 def parallelPair.ext {F G : WalkingParallelPair ⥤ C} (zero : F.obj zero ≅ G.obj zero)
     (one : F.obj one ≅ G.obj one) (left : F.map left ≫ one.Hom = zero.Hom ≫ G.map left)
     (right : F.map right ≫ one.Hom = zero.Hom ≫ G.map right) : F ≅ G :=
-  NatIso.ofComponents (by rintro ⟨j⟩; exacts[zero, one])
+  NatIso.ofComponents (by rintro ⟨j⟩; exacts [zero, one])
     (by rintro ⟨j₁⟩ ⟨j₂⟩ ⟨f⟩ <;> simp [left, right])
 #align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.ext
 
@@ -1311,7 +1311,7 @@ def isEqualizerCompMono {c : Fork f g} (i : IsLimit c) {Z : C} (h : Y ⟶ Z) [hm
     let s' : Fork f g := Fork.ofι s.ι (by apply hm.right_cancellation <;> simp [s.condition])
     let l := Fork.IsLimit.lift' i s'.ι s'.condition
     ⟨l.1, l.2, fun m hm => by
-      apply fork.is_limit.hom_ext i <;> rw [fork.ι_of_ι] at hm <;> rw [hm] <;> exact l.2.symm⟩
+      apply fork.is_limit.hom_ext i <;> rw [fork.ι_of_ι] at hm  <;> rw [hm] <;> exact l.2.symm⟩
 #align category_theory.limits.is_equalizer_comp_mono CategoryTheory.Limits.isEqualizerCompMono
 -/
 
@@ -1405,7 +1405,8 @@ def isCoequalizerEpiComp {c : Cofork f g} (i : IsColimit c) {W : C} (h : W ⟶ X
       Cofork.ofπ s.π (by apply hm.left_cancellation <;> simp_rw [← category.assoc, s.condition])
     let l := Cofork.IsColimit.desc' i s'.π s'.condition
     ⟨l.1, l.2, fun m hm => by
-      apply cofork.is_colimit.hom_ext i <;> rw [cofork.π_of_π] at hm <;> rw [hm] <;> exact l.2.symm⟩
+      apply cofork.is_colimit.hom_ext i <;> rw [cofork.π_of_π] at hm  <;> rw [hm] <;>
+        exact l.2.symm⟩
 #align category_theory.limits.is_coequalizer_epi_comp CategoryTheory.Limits.isCoequalizerEpiComp
 -/

f4758115

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -128,58 +128,28 @@ def walkingParallelPairOp : WalkingParallelPair ⥤ WalkingParallelPairᵒᵖ
 #align category_theory.limits.walking_parallel_pair_op CategoryTheory.Limits.walkingParallelPairOp
 -/
 
-/- warning: category_theory.limits.walking_parallel_pair_op_zero -> CategoryTheory.Limits.walkingParallelPairOp_zero is a dubious translation:
-lean 3 declaration is
-  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one)
-but is expected to have type
-  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one)
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_zero CategoryTheory.Limits.walkingParallelPairOp_zeroₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_zero : walkingParallelPairOp.obj zero = op one :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_zero CategoryTheory.Limits.walkingParallelPairOp_zero
 
-/- warning: category_theory.limits.walking_parallel_pair_op_one -> CategoryTheory.Limits.walkingParallelPairOp_one is a dubious translation:
-lean 3 declaration is
-  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.one) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)
-but is expected to have type
-  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.one) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_one CategoryTheory.Limits.walkingParallelPairOp_oneₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_one : walkingParallelPairOp.obj one = op zero :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_one CategoryTheory.Limits.walkingParallelPairOp_one
 
-/- warning: category_theory.limits.walking_parallel_pair_op_left -> CategoryTheory.Limits.walkingParallelPairOp_left is a dubious translation:
-lean 3 declaration is
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_left CategoryTheory.Limits.walkingParallelPairOp_leftₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_left :
     walkingParallelPairOp.map left = @Quiver.Hom.op _ _ zero one left :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_left CategoryTheory.Limits.walkingParallelPairOp_left
 
-/- warning: category_theory.limits.walking_parallel_pair_op_right -> CategoryTheory.Limits.walkingParallelPairOp_right is a dubious translation:
-lean 3 declaration is
-  Eq.{1} (Quiver.Hom.{1, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Functor.map.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) (Quiver.Hom.op.{0, 1} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)
-but is expected to have type
-  Eq.{1} (Quiver.Hom.{1, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.one)) (Prefunctor.map.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) (Quiver.Hom.op.{0, 1} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_right CategoryTheory.Limits.walkingParallelPairOp_rightₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_right :
     walkingParallelPairOp.map right = @Quiver.Hom.op _ _ zero one right :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_right CategoryTheory.Limits.walkingParallelPairOp_right
 
-/- warning: category_theory.limits.walking_parallel_pair_op_equiv -> CategoryTheory.Limits.walkingParallelPairOpEquiv is a dubious translation:
-lean 3 declaration is
-  CategoryTheory.Equivalence.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)
-but is expected to have type
-  CategoryTheory.Equivalence.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv CategoryTheory.Limits.walkingParallelPairOpEquivₓ'. -/
 /--
 The equivalence `walking_parallel_pair ⥤ walking_parallel_pairᵒᵖ` sending left to left and right to
 right.
@@ -200,42 +170,24 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
       rcases i with (_ | _) <;> rcases j with (_ | _) <;> rcases g with (_ | _ | _) <;> rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv CategoryTheory.Limits.walkingParallelPairOpEquiv
 
-/- warning: category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_zero -> CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zero is a dubious translation:
-lean 3 declaration is
-  Eq.{1} (CategoryTheory.Iso.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.app.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Equivalence.unitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Iso.refl.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair.zero)
-but is expected to have type
-  Eq.{1} (CategoryTheory.Iso.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv))) CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.app.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Equivalence.unitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Iso.refl.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair.zero)
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zeroₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_unitIso_zero :
     walkingParallelPairOpEquiv.unitIso.app zero = Iso.refl zero :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zero
 
-/- warning: category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_one -> CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_one is a dubious translation:
-lean 3 declaration is
-  Eq.{1} (CategoryTheory.Iso.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Iso.app.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Equivalence.unitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Iso.refl.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair.one)
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 @[simp]
 theorem walkingParallelPairOpEquiv_unitIso_one :
     walkingParallelPairOpEquiv.unitIso.app one = Iso.refl one :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_one
 
-/- warning: category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero -> CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zeroₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_zero :
     walkingParallelPairOpEquiv.counitIso.app (op zero) = Iso.refl (op zero) :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero
 
-/- warning: category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one -> CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_one is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_oneₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_one :
     walkingParallelPairOpEquiv.counitIso.app (op one) = Iso.refl (op one) :=
@@ -265,67 +217,31 @@ def parallelPair (f g : X ⟶ Y) : WalkingParallelPair ⥤ C
 #align category_theory.limits.parallel_pair CategoryTheory.Limits.parallelPair
 -/
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_obj_zero CategoryTheory.Limits.parallelPair_obj_zeroₓ'. -/
 @[simp]
 theorem parallelPair_obj_zero (f g : X ⟶ Y) : (parallelPair f g).obj zero = X :=
   rfl
 #align category_theory.limits.parallel_pair_obj_zero CategoryTheory.Limits.parallelPair_obj_zero
 
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 @[simp]
 theorem parallelPair_obj_one (f g : X ⟶ Y) : (parallelPair f g).obj one = Y :=
   rfl
 #align category_theory.limits.parallel_pair_obj_one CategoryTheory.Limits.parallelPair_obj_one
 
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 @[simp]
 theorem parallelPair_map_left (f g : X ⟶ Y) : (parallelPair f g).map left = f :=
   rfl
 #align category_theory.limits.parallel_pair_map_left CategoryTheory.Limits.parallelPair_map_left
 
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 @[simp]
 theorem parallelPair_map_right (f g : X ⟶ Y) : (parallelPair f g).map right = g :=
   rfl
 #align category_theory.limits.parallel_pair_map_right CategoryTheory.Limits.parallelPair_map_right
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_functor_obj CategoryTheory.Limits.parallelPair_functor_objₓ'. -/
 @[simp]
 theorem parallelPair_functor_obj {F : WalkingParallelPair ⥤ C} (j : WalkingParallelPair) :
     (parallelPair (F.map left) (F.map right)).obj j = F.obj j := by cases j <;> rfl
 #align category_theory.limits.parallel_pair_functor_obj CategoryTheory.Limits.parallelPair_functor_obj
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.diagram_iso_parallel_pair CategoryTheory.Limits.diagramIsoParallelPairₓ'. -/
 /-- Every functor indexing a (co)equalizer is naturally isomorphic (actually, equal) to a
     `parallel_pair` -/
 @[simps]
@@ -347,9 +263,6 @@ def parallelPairHom {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X
 #align category_theory.limits.parallel_pair_hom CategoryTheory.Limits.parallelPairHom
 -/
 
-/- warning: category_theory.limits.parallel_pair_hom_app_zero -> CategoryTheory.Limits.parallelPairHom_app_zero is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_hom_app_zero CategoryTheory.Limits.parallelPairHom_app_zeroₓ'. -/
 @[simp]
 theorem parallelPairHom_app_zero {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
     (q : Y ⟶ Y') (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') :
@@ -357,9 +270,6 @@ theorem parallelPairHom_app_zero {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y')
   rfl
 #align category_theory.limits.parallel_pair_hom_app_zero CategoryTheory.Limits.parallelPairHom_app_zero
 
-/- warning: category_theory.limits.parallel_pair_hom_app_one -> CategoryTheory.Limits.parallelPairHom_app_one is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_hom_app_one CategoryTheory.Limits.parallelPairHom_app_oneₓ'. -/
 @[simp]
 theorem parallelPairHom_app_one {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
     (q : Y ⟶ Y') (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') :
@@ -367,9 +277,6 @@ theorem parallelPairHom_app_one {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y')
   rfl
 #align category_theory.limits.parallel_pair_hom_app_one CategoryTheory.Limits.parallelPairHom_app_one
 
-/- warning: category_theory.limits.parallel_pair.ext -> CategoryTheory.Limits.parallelPair.ext is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.extₓ'. -/
 /-- Construct a natural isomorphism between functors out of the walking parallel pair from
 its components. -/
 @[simps]
@@ -406,12 +313,6 @@ abbrev Cofork (f g : X ⟶ Y) :=
 
 variable {f g : X ⟶ Y}
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ι CategoryTheory.Limits.Fork.ιₓ'. -/
 /-- A fork `t` on the parallel pair `f g : X ⟶ Y` consists of two morphisms `t.π.app zero : t.X ⟶ X`
     and `t.π.app one : t.X ⟶ Y`. Of these, only the first one is interesting, and we give it the
     shorter name `fork.ι t`. -/
@@ -419,23 +320,11 @@ def Fork.ι (t : Fork f g) :=
   t.π.app zero
 #align category_theory.limits.fork.ι CategoryTheory.Limits.Fork.ι
 
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 @[simp]
 theorem Fork.app_zero_eq_ι (t : Fork f g) : t.π.app zero = t.ι :=
   rfl
 #align category_theory.limits.fork.app_zero_eq_ι CategoryTheory.Limits.Fork.app_zero_eq_ι
 
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 /-- A cofork `t` on the parallel_pair `f g : X ⟶ Y` consists of two morphisms
     `t.ι.app zero : X ⟶ t.X` and `t.ι.app one : Y ⟶ t.X`. Of these, only the second one is
     interesting, and we give it the shorter name `cofork.π t`. -/
@@ -443,44 +332,26 @@ def Cofork.π (t : Cofork f g) :=
   t.ι.app one
 #align category_theory.limits.cofork.π CategoryTheory.Limits.Cofork.π
 
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 @[simp]
 theorem Cofork.app_one_eq_π (t : Cofork f g) : t.ι.app one = t.π :=
   rfl
 #align category_theory.limits.cofork.app_one_eq_π CategoryTheory.Limits.Cofork.app_one_eq_π
 
-/- warning: category_theory.limits.fork.app_one_eq_ι_comp_left -> CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.app_one_eq_ι_comp_left CategoryTheory.Limits.Fork.app_one_eq_ι_comp_leftₓ'. -/
 @[simp]
 theorem Fork.app_one_eq_ι_comp_left (s : Fork f g) : s.π.app one = s.ι ≫ f := by
   rw [← s.app_zero_eq_ι, ← s.w left, parallel_pair_map_left]
 #align category_theory.limits.fork.app_one_eq_ι_comp_left CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left
 
-/- warning: category_theory.limits.fork.app_one_eq_ι_comp_right -> CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_rightₓ'. -/
 @[reassoc]
 theorem Fork.app_one_eq_ι_comp_right (s : Fork f g) : s.π.app one = s.ι ≫ g := by
   rw [← s.app_zero_eq_ι, ← s.w right, parallel_pair_map_right]
 #align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right
 
-/- warning: category_theory.limits.cofork.app_zero_eq_comp_π_left -> CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_left is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.app_zero_eq_comp_π_left CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_leftₓ'. -/
 @[simp]
 theorem Cofork.app_zero_eq_comp_π_left (s : Cofork f g) : s.ι.app zero = f ≫ s.π := by
   rw [← s.app_one_eq_π, ← s.w left, parallel_pair_map_left]
 #align category_theory.limits.cofork.app_zero_eq_comp_π_left CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_left
 
-/- warning: category_theory.limits.cofork.app_zero_eq_comp_π_right -> CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_right is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.app_zero_eq_comp_π_right CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_rightₓ'. -/
 @[reassoc]
 theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g ≫ s.π := by
   rw [← s.app_one_eq_π, ← s.w right, parallel_pair_map_right]
@@ -518,48 +389,27 @@ def Cofork.ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : Cofork f g
 #align category_theory.limits.cofork.of_π CategoryTheory.Limits.Cofork.ofπ
 -/
 
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 -- See note [dsimp, simp]
 @[simp]
 theorem Fork.ι_ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : (Fork.ofι ι w).ι = ι :=
   rfl
 #align category_theory.limits.fork.ι_of_ι CategoryTheory.Limits.Fork.ι_ofι
 
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 @[simp]
 theorem Cofork.π_ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : (Cofork.ofπ π w).π = π :=
   rfl
 #align category_theory.limits.cofork.π_of_π CategoryTheory.Limits.Cofork.π_ofπ
 
-/- warning: category_theory.limits.fork.condition -> CategoryTheory.Limits.Fork.condition is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.conditionₓ'. -/
 @[simp, reassoc]
 theorem Fork.condition (t : Fork f g) : t.ι ≫ f = t.ι ≫ g := by
   rw [← t.app_one_eq_ι_comp_left, ← t.app_one_eq_ι_comp_right]
 #align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.condition
 
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-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.conditionₓ'. -/
 @[simp, reassoc]
 theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
   rw [← t.app_zero_eq_comp_π_left, ← t.app_zero_eq_comp_π_right]
 #align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.condition
 
-/- warning: category_theory.limits.fork.equalizer_ext -> CategoryTheory.Limits.Fork.equalizer_ext is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_extₓ'. -/
 /-- To check whether two maps are equalized by both maps of a fork, it suffices to check it for the
     first map -/
 theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫ s.ι = l ≫ s.ι) :
@@ -568,9 +418,6 @@ theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫
   | one => by rw [s.app_one_eq_ι_comp_left, reassoc_of h]
 #align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_ext
 
-/- warning: category_theory.limits.cofork.coequalizer_ext -> CategoryTheory.Limits.Cofork.coequalizer_ext is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.coequalizer_ext CategoryTheory.Limits.Cofork.coequalizer_extₓ'. -/
 /-- To check whether two maps are coequalized by both maps of a cofork, it suffices to check it for
     the second map -/
 theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.pt ⟶ W}
@@ -579,53 +426,26 @@ theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.pt ⟶ W}
   | one => h
 #align category_theory.limits.cofork.coequalizer_ext CategoryTheory.Limits.Cofork.coequalizer_ext
 
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 theorem Fork.IsLimit.hom_ext {s : Fork f g} (hs : IsLimit s) {W : C} {k l : W ⟶ s.pt}
     (h : k ≫ Fork.ι s = l ≫ Fork.ι s) : k = l :=
   hs.hom_ext <| Fork.equalizer_ext _ h
 #align category_theory.limits.fork.is_limit.hom_ext CategoryTheory.Limits.Fork.IsLimit.hom_ext
 
-/- warning: category_theory.limits.cofork.is_colimit.hom_ext -> CategoryTheory.Limits.Cofork.IsColimit.hom_ext is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_ext CategoryTheory.Limits.Cofork.IsColimit.hom_extₓ'. -/
 theorem Cofork.IsColimit.hom_ext {s : Cofork f g} (hs : IsColimit s) {W : C} {k l : s.pt ⟶ W}
     (h : Cofork.π s ≫ k = Cofork.π s ≫ l) : k = l :=
   hs.hom_ext <| Cofork.coequalizer_ext _ h
 #align category_theory.limits.cofork.is_colimit.hom_ext CategoryTheory.Limits.Cofork.IsColimit.hom_ext
 
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 @[simp, reassoc]
 theorem Fork.IsLimit.lift_ι {s t : Fork f g} (hs : IsLimit s) : hs.lift t ≫ s.ι = t.ι :=
   hs.fac _ _
 #align category_theory.limits.fork.is_limit.lift_ι CategoryTheory.Limits.Fork.IsLimit.lift_ι
 
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 @[simp, reassoc]
 theorem Cofork.IsColimit.π_desc {s t : Cofork f g} (hs : IsColimit s) : s.π ≫ hs.desc t = t.π :=
   hs.fac _ _
 #align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_desc
 
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 /-- If `s` is a limit fork over `f` and `g`, then a morphism `k : W ⟶ X` satisfying
     `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ s.X` such that `l ≫ fork.ι s = k`. -/
 def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
@@ -633,9 +453,6 @@ def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _⟩
 #align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'
 
-/- warning: category_theory.limits.cofork.is_colimit.desc' -> CategoryTheory.Limits.Cofork.IsColimit.desc' is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'ₓ'. -/
 /-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
     `f ≫ k = g ≫ k` induces a morphism `l : s.X ⟶ W` such that `cofork.π s ≫ l = k`. -/
 def Cofork.IsColimit.desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
@@ -643,30 +460,18 @@ def Cofork.IsColimit.desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y 
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _⟩
 #align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'
 
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 theorem Fork.IsLimit.existsUnique {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X)
     (h : k ≫ f = k ≫ g) : ∃! l : W ⟶ s.pt, l ≫ Fork.ι s = k :=
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _, fun m hm =>
     Fork.IsLimit.hom_ext hs <| hm.symm ▸ (hs.fac (Fork.ofι _ h) WalkingParallelPair.zero).symm⟩
 #align category_theory.limits.fork.is_limit.exists_unique CategoryTheory.Limits.Fork.IsLimit.existsUnique
 
-/- warning: category_theory.limits.cofork.is_colimit.exists_unique -> CategoryTheory.Limits.Cofork.IsColimit.existsUnique is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUniqueₓ'. -/
 theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
     (h : f ≫ k = g ≫ k) : ∃! d : s.pt ⟶ W, Cofork.π s ≫ d = k :=
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _, fun m hm =>
     Cofork.IsColimit.hom_ext hs <| hm.symm ▸ (hs.fac (Cofork.ofπ _ h) WalkingParallelPair.one).symm⟩
 #align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUnique
 
-/- warning: category_theory.limits.fork.is_limit.mk -> CategoryTheory.Limits.Fork.IsLimit.mk is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mkₓ'. -/
 /-- This is a slightly more convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content -/
 @[simps lift]
@@ -680,9 +485,6 @@ def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.pt ⟶ t.pt)
     uniq := fun s m j => by tidy }
 #align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mk
 
-/- warning: category_theory.limits.fork.is_limit.mk' -> CategoryTheory.Limits.Fork.IsLimit.mk' is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.mk' CategoryTheory.Limits.Fork.IsLimit.mk'ₓ'. -/
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
@@ -691,9 +493,6 @@ def Fork.IsLimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Fork f g)
   Fork.IsLimit.mk t (fun s => (create s).1) (fun s => (create s).2.1) fun s m w => (create s).2.2 w
 #align category_theory.limits.fork.is_limit.mk' CategoryTheory.Limits.Fork.IsLimit.mk'
 
-/- warning: category_theory.limits.cofork.is_colimit.mk -> CategoryTheory.Limits.Cofork.IsColimit.mk is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mkₓ'. -/
 /-- This is a slightly more convenient method to verify that a cofork is a colimit cocone. It
     only asks for a proof of facts that carry any mathematical content -/
 def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.pt)
@@ -706,9 +505,6 @@ def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.
     uniq := by tidy }
 #align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mk
 
-/- warning: category_theory.limits.cofork.is_colimit.mk' -> CategoryTheory.Limits.Cofork.IsColimit.mk' is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.mk' CategoryTheory.Limits.Cofork.IsColimit.mk'ₓ'. -/
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
@@ -720,21 +516,12 @@ def Cofork.IsColimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Cofork f g)
     (create s).2.2 w
 #align category_theory.limits.cofork.is_colimit.mk' CategoryTheory.Limits.Cofork.IsColimit.mk'
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUniqueₓ'. -/
 /-- Noncomputably make a limit cone from the existence of unique factorizations. -/
 def Fork.IsLimit.ofExistsUnique {t : Fork f g}
     (hs : ∀ s : Fork f g, ∃! l : s.pt ⟶ t.pt, l ≫ Fork.ι t = Fork.ι s) : IsLimit t := by
   choose d hd hd' using hs; exact fork.is_limit.mk _ d hd fun s m hm => hd' _ _ hm
 #align category_theory.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUnique
 
-/- warning: category_theory.limits.cofork.is_colimit.of_exists_unique -> CategoryTheory.Limits.Cofork.IsColimit.ofExistsUnique is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.of_exists_unique CategoryTheory.Limits.Cofork.IsColimit.ofExistsUniqueₓ'. -/
 /-- Noncomputably make a colimit cocone from the existence of unique factorizations. -/
 def Cofork.IsColimit.ofExistsUnique {t : Cofork f g}
     (hs : ∀ s : Cofork f g, ∃! d : t.pt ⟶ s.pt, Cofork.π t ≫ d = Cofork.π s) : IsColimit t := by
@@ -759,9 +546,6 @@ def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t
 #align category_theory.limits.fork.is_limit.hom_iso CategoryTheory.Limits.Fork.IsLimit.homIso
 -/
 
-/- warning: category_theory.limits.fork.is_limit.hom_iso_natural -> CategoryTheory.Limits.Fork.IsLimit.homIso_natural is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_naturalₓ'. -/
 /-- The bijection of `fork.is_limit.hom_iso` is natural in `Z`. -/
 theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t)
     {Z Z' : C} (q : Z' ⟶ Z) (k : Z ⟶ t.pt) :
@@ -786,9 +570,6 @@ def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsC
 #align category_theory.limits.cofork.is_colimit.hom_iso CategoryTheory.Limits.Cofork.IsColimit.homIso
 -/
 
-/- warning: category_theory.limits.cofork.is_colimit.hom_iso_natural -> CategoryTheory.Limits.Cofork.IsColimit.homIso_natural is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_naturalₓ'. -/
 /-- The bijection of `cofork.is_colimit.hom_iso` is natural in `Z`. -/
 theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} {Z Z' : C}
     (q : Z ⟶ Z') (ht : IsColimit t) (k : t.pt ⟶ Z) :
@@ -797,12 +578,6 @@ theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f
   (Category.assoc _ _ _).symm
 #align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_natural
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cone.of_fork CategoryTheory.Limits.Cone.ofForkₓ'. -/
 /-- This is a helper construction that can be useful when verifying that a category has all
     equalizers. Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)`, and a fork on `F.map left` and `F.map right`,
@@ -818,12 +593,6 @@ def Cone.ofFork {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map ri
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
 #align category_theory.limits.cone.of_fork CategoryTheory.Limits.Cone.ofFork
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cocone.of_cofork CategoryTheory.Limits.Cocone.ofCoforkₓ'. -/
 /-- This is a helper construction that can be useful when verifying that a category has all
     coequalizers. Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)`, and a cofork on `F.map left` and `F.map right`,
@@ -840,30 +609,18 @@ def Cocone.ofCofork {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
 #align category_theory.limits.cocone.of_cofork CategoryTheory.Limits.Cocone.ofCofork
 
-/- warning: category_theory.limits.cone.of_fork_π -> CategoryTheory.Limits.Cone.ofFork_π is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cone.of_fork_π CategoryTheory.Limits.Cone.ofFork_πₓ'. -/
 @[simp]
 theorem Cone.ofFork_π {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map right)) (j) :
     (Cone.ofFork t).π.app j = t.π.app j ≫ eqToHom (by tidy) :=
   rfl
 #align category_theory.limits.cone.of_fork_π CategoryTheory.Limits.Cone.ofFork_π
 
-/- warning: category_theory.limits.cocone.of_cofork_ι -> CategoryTheory.Limits.Cocone.ofCofork_ι is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cocone.of_cofork_ι CategoryTheory.Limits.Cocone.ofCofork_ιₓ'. -/
 @[simp]
 theorem Cocone.ofCofork_ι {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.map right))
     (j) : (Cocone.ofCofork t).ι.app j = eqToHom (by tidy) ≫ t.ι.app j :=
   rfl
 #align category_theory.limits.cocone.of_cofork_ι CategoryTheory.Limits.Cocone.ofCofork_ι
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.of_cone CategoryTheory.Limits.Fork.ofConeₓ'. -/
 /-- Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)` and a cone on `F`, we get a fork on
     `F.map left` and `F.map right`. -/
@@ -873,12 +630,6 @@ def Fork.ofCone {F : WalkingParallelPair ⥤ C} (t : Cone F) : Fork (F.map left)
   π := { app := fun X => t.π.app X ≫ eqToHom (by tidy) }
 #align category_theory.limits.fork.of_cone CategoryTheory.Limits.Fork.ofCone
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.of_cocone CategoryTheory.Limits.Cofork.ofCoconeₓ'. -/
 /-- Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)` and a cocone on `F`, we get a cofork on
     `F.map left` and `F.map right`. -/
@@ -888,48 +639,30 @@ def Cofork.ofCocone {F : WalkingParallelPair ⥤ C} (t : Cocone F) : Cofork (F.m
   ι := { app := fun X => eqToHom (by tidy) ≫ t.ι.app X }
 #align category_theory.limits.cofork.of_cocone CategoryTheory.Limits.Cofork.ofCocone
 
-/- warning: category_theory.limits.fork.of_cone_π -> CategoryTheory.Limits.Fork.ofCone_π is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.of_cone_π CategoryTheory.Limits.Fork.ofCone_πₓ'. -/
 @[simp]
 theorem Fork.ofCone_π {F : WalkingParallelPair ⥤ C} (t : Cone F) (j) :
     (Fork.ofCone t).π.app j = t.π.app j ≫ eqToHom (by tidy) :=
   rfl
 #align category_theory.limits.fork.of_cone_π CategoryTheory.Limits.Fork.ofCone_π
 
-/- warning: category_theory.limits.cofork.of_cocone_ι -> CategoryTheory.Limits.Cofork.ofCocone_ι is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.of_cocone_ι CategoryTheory.Limits.Cofork.ofCocone_ιₓ'. -/
 @[simp]
 theorem Cofork.ofCocone_ι {F : WalkingParallelPair ⥤ C} (t : Cocone F) (j) :
     (Cofork.ofCocone t).ι.app j = eqToHom (by tidy) ≫ t.ι.app j :=
   rfl
 #align category_theory.limits.cofork.of_cocone_ι CategoryTheory.Limits.Cofork.ofCocone_ι
 
-/- warning: category_theory.limits.fork.ι_postcompose -> CategoryTheory.Limits.Fork.ι_postcompose is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ι_postcompose CategoryTheory.Limits.Fork.ι_postcomposeₓ'. -/
 @[simp]
 theorem Fork.ι_postcompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
     {c : Fork f g} : Fork.ι ((Cones.postcompose α).obj c) = c.ι ≫ α.app _ :=
   rfl
 #align category_theory.limits.fork.ι_postcompose CategoryTheory.Limits.Fork.ι_postcompose
 
-/- warning: category_theory.limits.cofork.π_precompose -> CategoryTheory.Limits.Cofork.π_precompose is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.π_precompose CategoryTheory.Limits.Cofork.π_precomposeₓ'. -/
 @[simp]
 theorem Cofork.π_precompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
     {c : Cofork f' g'} : Cofork.π ((Cocones.precompose α).obj c) = α.app _ ≫ c.π :=
   rfl
 #align category_theory.limits.cofork.π_precompose CategoryTheory.Limits.Cofork.π_precompose
 
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 /-- Helper function for constructing morphisms between equalizer forks.
 -/
 @[simps]
@@ -942,12 +675,6 @@ def Fork.mkHom {s t : Fork f g} (k : s.pt ⟶ t.pt) (w : k ≫ t.ι = s.ι) : s
     · simp only [fork.app_one_eq_ι_comp_left, reassoc_of w]
 #align category_theory.limits.fork.mk_hom CategoryTheory.Limits.Fork.mkHom
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ext CategoryTheory.Limits.Fork.extₓ'. -/
 /-- To construct an isomorphism between forks,
 it suffices to give an isomorphism between the cone points
 and check that it commutes with the `ι` morphisms.
@@ -959,20 +686,11 @@ def Fork.ext {s t : Fork f g} (i : s.pt ≅ t.pt) (w : i.Hom ≫ t.ι = s.ι) :
   inv := Fork.mkHom i.inv (by rw [← w, iso.inv_hom_id_assoc])
 #align category_theory.limits.fork.ext CategoryTheory.Limits.Fork.ext
 
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 /-- Every fork is isomorphic to one of the form `fork.of_ι _ _`. -/
 def Fork.isoForkOfι (c : Fork f g) : c ≅ Fork.ofι c.ι c.condition :=
   Fork.ext (by simp only [fork.of_ι_X, functor.const_obj_obj]) (by simp)
 #align category_theory.limits.fork.iso_fork_of_ι CategoryTheory.Limits.Fork.isoForkOfι
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.mk_hom CategoryTheory.Limits.Cofork.mkHomₓ'. -/
 /-- Helper function for constructing morphisms between coequalizer coforks.
 -/
 @[simps]
@@ -985,29 +703,14 @@ def Cofork.mkHom {s t : Cofork f g} (k : s.pt ⟶ t.pt) (w : s.π ≫ k = t.π)
     · exact w
 #align category_theory.limits.cofork.mk_hom CategoryTheory.Limits.Cofork.mkHom
 
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 @[simp, reassoc]
 theorem Fork.hom_comp_ι {s t : Fork f g} (f : s ⟶ t) : f.Hom ≫ t.ι = s.ι := by tidy
 #align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ι
 
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 @[simp, reassoc]
 theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.π := by tidy
 #align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_hom
 
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-<too large>
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 /-- To construct an isomorphism between coforks,
 it suffices to give an isomorphism between the cocone points
 and check that it commutes with the `π` morphisms.
@@ -1019,12 +722,6 @@ def Cofork.ext {s t : Cofork f g} (i : s.pt ≅ t.pt) (w : s.π ≫ i.Hom = t.π
   inv := Cofork.mkHom i.inv (by rw [iso.comp_inv_eq, w])
 #align category_theory.limits.cofork.ext CategoryTheory.Limits.Cofork.ext
 
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 /-- Every cofork is isomorphic to one of the form `cofork.of_π _ _`. -/
 def Cofork.isoCoforkOfπ (c : Cofork f g) : c ≅ Cofork.ofπ c.π c.condition :=
   Cofork.ext (by simp only [cofork.of_π_X, functor.const_obj_obj]) (by dsimp <;> simp)
@@ -1069,23 +766,11 @@ abbrev equalizer.fork : Fork f g :=
 #align category_theory.limits.equalizer.fork CategoryTheory.Limits.equalizer.fork
 -/
 
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 @[simp]
 theorem equalizer.fork_ι : (equalizer.fork f g).ι = equalizer.ι f g :=
   rfl
 #align category_theory.limits.equalizer.fork_ι CategoryTheory.Limits.equalizer.fork_ι
 
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_inst_1 X Y f g _inst_2)
-Case conversion may be inaccurate. Consider using '#align category_theory.limits.equalizer.fork_π_app_zero CategoryTheory.Limits.equalizer.fork_π_app_zeroₓ'. -/
 @[simp]
 theorem equalizer.fork_π_app_zero : (equalizer.fork f g).π.app zero = equalizer.ι f g :=
   rfl
@@ -1162,12 +847,6 @@ section
 
 variable {f g}
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.mono_of_is_limit_fork CategoryTheory.Limits.mono_of_isLimit_forkₓ'. -/
 /-- The equalizer morphism in any limit cone is a monomorphism. -/
 theorem mono_of_isLimit_fork {c : Fork f g} (i : IsLimit c) : Mono (Fork.ι c) :=
   { right_cancellation := fun Z h k w => Fork.IsLimit.hom_ext i w }
@@ -1194,12 +873,6 @@ def isLimitIdFork (h : f = g) : IsLimit (idFork h) :=
 #align category_theory.limits.is_limit_id_fork CategoryTheory.Limits.isLimitIdFork
 -/
 
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 /-- Every equalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_eq (h₀ : f = g) {c : Fork f g} (h : IsLimit c) :
     IsIso c.ι :=
@@ -1213,31 +886,16 @@ theorem equalizer.ι_of_eq [HasEqualizer f g] (h : f = g) : IsIso (equalizer.ι
 #align category_theory.limits.equalizer.ι_of_eq CategoryTheory.Limits.equalizer.ι_of_eq
 -/
 
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 /-- Every equalizer of `(f, f)` is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_self {c : Fork f f} (h : IsLimit c) : IsIso c.ι :=
   isIso_limit_cone_parallelPair_of_eq rfl h
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_self CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_self
 
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 /-- An equalizer that is an epimorphism is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_epi {c : Fork f g} (h : IsLimit c) [Epi c.ι] : IsIso c.ι :=
   isIso_limit_cone_parallelPair_of_eq ((cancel_epi _).1 (Fork.condition c)) h
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_epi
 
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 /-- Two morphisms are equal if there is a fork whose inclusion is epi. -/
 theorem eq_of_epi_fork_ι (t : Fork f g) [Epi (Fork.ι t)] : f = g :=
   (cancel_epi (Fork.ι t)).1 <| Fork.condition t
@@ -1326,23 +984,11 @@ abbrev coequalizer.cofork : Cofork f g :=
 #align category_theory.limits.coequalizer.cofork CategoryTheory.Limits.coequalizer.cofork
 -/
 
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 @[simp]
 theorem coequalizer.cofork_π : (coequalizer.cofork f g).π = coequalizer.π f g :=
   rfl
 #align category_theory.limits.coequalizer.cofork_π CategoryTheory.Limits.coequalizer.cofork_π
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.coequalizer.cofork_ι_app_one CategoryTheory.Limits.coequalizer.cofork_ι_app_oneₓ'. -/
 @[simp]
 theorem coequalizer.cofork_ι_app_one : (coequalizer.cofork f g).ι.app one = coequalizer.π f g :=
   rfl
@@ -1430,12 +1076,6 @@ section
 
 variable {f g}
 
-/- warning: category_theory.limits.epi_of_is_colimit_cofork -> CategoryTheory.Limits.epi_of_isColimit_cofork is a dubious translation:
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.epi_of_is_colimit_cofork CategoryTheory.Limits.epi_of_isColimit_coforkₓ'. -/
 /-- The coequalizer morphism in any colimit cocone is an epimorphism. -/
 theorem epi_of_isColimit_cofork {c : Cofork f g} (i : IsColimit c) : Epi c.π :=
   { left_cancellation := fun Z h k w => Cofork.IsColimit.hom_ext i w }
@@ -1462,12 +1102,6 @@ def isColimitIdCofork (h : f = g) : IsColimit (idCofork h) :=
 #align category_theory.limits.is_colimit_id_cofork CategoryTheory.Limits.isColimitIdCofork
 -/
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_eq CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_eqₓ'. -/
 /-- Every coequalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem isIso_colimit_cocone_parallelPair_of_eq (h₀ : f = g) {c : Cofork f g} (h : IsColimit c) :
     IsIso c.π :=
@@ -1481,32 +1115,17 @@ theorem coequalizer.π_of_eq [HasCoequalizer f g] (h : f = g) : IsIso (coequaliz
 #align category_theory.limits.coequalizer.π_of_eq CategoryTheory.Limits.coequalizer.π_of_eq
 -/
 
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 /-- Every coequalizer of `(f, f)` is an isomorphism. -/
 theorem isIso_colimit_cocone_parallelPair_of_self {c : Cofork f f} (h : IsColimit c) : IsIso c.π :=
   isIso_colimit_cocone_parallelPair_of_eq rfl h
 #align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_self CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_self
 
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 /-- A coequalizer that is a monomorphism is an isomorphism. -/
 theorem isIso_limit_cocone_parallelPair_of_epi {c : Cofork f g} (h : IsColimit c) [Mono c.π] :
     IsIso c.π :=
   isIso_colimit_cocone_parallelPair_of_eq ((cancel_mono _).1 (Cofork.condition c)) h
 #align category_theory.limits.is_iso_limit_cocone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cocone_parallelPair_of_epi
 
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 /-- Two morphisms are equal if there is a cofork whose projection is mono. -/
 theorem eq_of_mono_cofork_π (t : Cofork f g) [Mono (Cofork.π t)] : f = g :=
   (cancel_mono (Cofork.π t)).1 <| Cofork.condition t
@@ -1562,12 +1181,6 @@ section Comparison
 
 variable {D : Type u₂} [Category.{v₂} D] (G : C ⥤ D)
 
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 /-- The comparison morphism for the equalizer of `f,g`.
 This is an isomorphism iff `G` preserves the equalizer of `f,g`; see
 `category_theory/limits/preserves/shapes/equalizers.lean`
@@ -1577,18 +1190,12 @@ def equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
   equalizer.lift (G.map (equalizer.ι _ _)) (by simp only [← G.map_comp, equalizer.condition])
 #align category_theory.limits.equalizer_comparison CategoryTheory.Limits.equalizerComparison
 
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-<too large>
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 @[simp, reassoc]
 theorem equalizerComparison_comp_π [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
     equalizerComparison f g G ≫ equalizer.ι (G.map f) (G.map g) = G.map (equalizer.ι f g) :=
   equalizer.lift_ι _ _
 #align category_theory.limits.equalizer_comparison_comp_π CategoryTheory.Limits.equalizerComparison_comp_π
 
-/- warning: category_theory.limits.map_lift_equalizer_comparison -> CategoryTheory.Limits.map_lift_equalizerComparison is a dubious translation:
-<too large>
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 @[simp, reassoc]
 theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] {Z : C}
     {h : Z ⟶ X} (w : h ≫ f = h ≫ g) :
@@ -1597,30 +1204,18 @@ theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f)
   by ext; simp [← G.map_comp]
 #align category_theory.limits.map_lift_equalizer_comparison CategoryTheory.Limits.map_lift_equalizerComparison
 
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 /-- The comparison morphism for the coequalizer of `f,g`. -/
 def coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer (G.map f) (G.map g) ⟶ G.obj (coequalizer f g) :=
   coequalizer.desc (G.map (coequalizer.π _ _)) (by simp only [← G.map_comp, coequalizer.condition])
 #align category_theory.limits.coequalizer_comparison CategoryTheory.Limits.coequalizerComparison
 
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 @[simp, reassoc]
 theorem ι_comp_coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer.π _ _ ≫ coequalizerComparison f g G = G.map (coequalizer.π _ _) :=
   coequalizer.π_desc _ _
 #align category_theory.limits.ι_comp_coequalizer_comparison CategoryTheory.Limits.ι_comp_coequalizerComparison
 
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 @[simp, reassoc]
 theorem coequalizerComparison_map_desc [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)]
     {Z : C} {h : Y ⟶ Z} (w : f ≫ h = g ≫ h) :
@@ -1678,12 +1273,6 @@ def coneOfIsSplitMono : Fork (𝟙 Y) (retraction f ≫ f) :=
 #align category_theory.limits.cone_of_is_split_mono CategoryTheory.Limits.coneOfIsSplitMono
 -/
 
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 @[simp]
 theorem coneOfIsSplitMono_ι : (coneOfIsSplitMono f).ι = f :=
   rfl
@@ -1737,12 +1326,6 @@ theorem hasEqualizer_comp_mono [HasEqualizer f g] {Z : C} (h : Y ⟶ Z) [Mono h]
 #align category_theory.limits.has_equalizer_comp_mono CategoryTheory.Limits.hasEqualizer_comp_mono
 -/
 
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 /-- An equalizer of an idempotent morphism and the identity is split mono. -/
 @[simps]
 def splitMonoOfIdempotentOfIsLimitFork {X : C} {f : X ⟶ X} (hf : f ≫ f = f) {c : Fork (𝟙 X) f}
@@ -1778,12 +1361,6 @@ def coconeOfIsSplitEpi : Cofork (𝟙 X) (f ≫ section_ f) :=
 #align category_theory.limits.cocone_of_is_split_epi CategoryTheory.Limits.coconeOfIsSplitEpi
 -/
 
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-Case conversion may be inaccurate. Consider using '#align category_theory.limits.cocone_of_is_split_epi_π CategoryTheory.Limits.coconeOfIsSplitEpi_πₓ'. -/
 @[simp]
 theorem coconeOfIsSplitEpi_π : (coconeOfIsSplitEpi f).π = f :=
   rfl
@@ -1842,12 +1419,6 @@ theorem hasCoequalizer_epi_comp [HasCoequalizer f g] {W : C} (h : W ⟶ X) [hm :
 
 variable (C f g)
 
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 /-- A coequalizer of an idempotent morphism and the identity is split epi. -/
 @[simps]
 def splitEpiOfIdempotentOfIsColimitCofork {X : C} {f : X ⟶ X} (hf : f ≫ f = f) {c : Cofork (𝟙 X) f}

f4758115

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -121,12 +121,8 @@ right.
 -/
 def walkingParallelPairOp : WalkingParallelPair ⥤ WalkingParallelPairᵒᵖ
     where
-  obj x :=
-    op <| by
-      cases x
-      exacts[one, zero]
-  map i j f := by
-    cases f <;> apply Quiver.Hom.op
+  obj x := op <| by cases x; exacts[one, zero]
+  map i j f := by cases f <;> apply Quiver.Hom.op;
     exacts[left, right, walking_parallel_pair_hom.id _]
   map_comp' := by rintro (_ | _) (_ | _) (_ | _) (_ | _ | _) (_ | _ | _) <;> rfl
 #align category_theory.limits.walking_parallel_pair_op CategoryTheory.Limits.walkingParallelPairOp
@@ -197,19 +193,10 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
     NatIso.ofComponents (fun j => eqToIso (by cases j <;> rfl))
       (by rintro (_ | _) (_ | _) (_ | _ | _) <;> rfl)
   counitIso :=
-    NatIso.ofComponents
-      (fun j =>
-        eqToIso
-          (by
-            induction j using Opposite.rec'
-            cases j <;> rfl))
+    NatIso.ofComponents (fun j => eqToIso (by induction j using Opposite.rec'; cases j <;> rfl))
       fun i j f => by
-      induction i using Opposite.rec'
-      induction j using Opposite.rec'
-      let g := f.unop
-      have : f = g.op := rfl
-      clear_value g
-      subst this
+      induction i using Opposite.rec'; induction j using Opposite.rec'
+      let g := f.unop; have : f = g.op := rfl; clear_value g; subst this
       rcases i with (_ | _) <;> rcases j with (_ | _) <;> rcases g with (_ | _ | _) <;> rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv CategoryTheory.Limits.walkingParallelPairOpEquiv
 
@@ -274,10 +261,7 @@ def parallelPair (f g : X ⟶ Y) : WalkingParallelPair ⥤ C
     | _, _, left => f
     | _, _, right => g
   -- `tidy` can cope with this, but it's too slow:
-  map_comp' := by
-    rintro (⟨⟩ | ⟨⟩) (⟨⟩ | ⟨⟩) (⟨⟩ | ⟨⟩) ⟨⟩ ⟨⟩ <;>
-      · unfold_aux
-        simp <;> rfl
+  map_comp' := by rintro (⟨⟩ | ⟨⟩) (⟨⟩ | ⟨⟩) (⟨⟩ | ⟨⟩) ⟨⟩ ⟨⟩ <;> · unfold_aux; simp <;> rfl
 #align category_theory.limits.parallel_pair CategoryTheory.Limits.parallelPair
 -/
 
@@ -359,10 +343,7 @@ def parallelPairHom {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X
     match j with
     | zero => p
     | one => q
-  naturality' := by
-    rintro (⟨⟩ | ⟨⟩) (⟨⟩ | ⟨⟩) ⟨⟩ <;>
-      · unfold_aux
-        simp [wf, wg]
+  naturality' := by rintro (⟨⟩ | ⟨⟩) (⟨⟩ | ⟨⟩) ⟨⟩ <;> · unfold_aux; simp [wf, wg]
 #align category_theory.limits.parallel_pair_hom CategoryTheory.Limits.parallelPairHom
 -/
 
@@ -395,10 +376,7 @@ its components. -/
 def parallelPair.ext {F G : WalkingParallelPair ⥤ C} (zero : F.obj zero ≅ G.obj zero)
     (one : F.obj one ≅ G.obj one) (left : F.map left ≫ one.Hom = zero.Hom ≫ G.map left)
     (right : F.map right ≫ one.Hom = zero.Hom ≫ G.map right) : F ≅ G :=
-  NatIso.ofComponents
-    (by
-      rintro ⟨j⟩
-      exacts[zero, one])
+  NatIso.ofComponents (by rintro ⟨j⟩; exacts[zero, one])
     (by rintro ⟨j₁⟩ ⟨j₂⟩ ⟨f⟩ <;> simp [left, right])
 #align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.ext
 
@@ -520,12 +498,10 @@ def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g
       naturality' := fun X Y f =>
         by
         cases X <;> cases Y <;> cases f <;> dsimp <;> simp
-        · dsimp
-          simp
+        · dsimp; simp
         -- See note [dsimp, simp].
         · exact w
-        · dsimp
-          simp }
+        · dsimp; simp }
 #align category_theory.limits.fork.of_ι CategoryTheory.Limits.Fork.ofι
 -/
 
@@ -752,10 +728,8 @@ but is expected to have type
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUniqueₓ'. -/
 /-- Noncomputably make a limit cone from the existence of unique factorizations. -/
 def Fork.IsLimit.ofExistsUnique {t : Fork f g}
-    (hs : ∀ s : Fork f g, ∃! l : s.pt ⟶ t.pt, l ≫ Fork.ι t = Fork.ι s) : IsLimit t :=
-  by
-  choose d hd hd' using hs
-  exact fork.is_limit.mk _ d hd fun s m hm => hd' _ _ hm
+    (hs : ∀ s : Fork f g, ∃! l : s.pt ⟶ t.pt, l ≫ Fork.ι t = Fork.ι s) : IsLimit t := by
+  choose d hd hd' using hs; exact fork.is_limit.mk _ d hd fun s m hm => hd' _ _ hm
 #align category_theory.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUnique
 
 /- warning: category_theory.limits.cofork.is_colimit.of_exists_unique -> CategoryTheory.Limits.Cofork.IsColimit.ofExistsUnique is a dubious translation:
@@ -763,10 +737,8 @@ def Fork.IsLimit.ofExistsUnique {t : Fork f g}
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.of_exists_unique CategoryTheory.Limits.Cofork.IsColimit.ofExistsUniqueₓ'. -/
 /-- Noncomputably make a colimit cocone from the existence of unique factorizations. -/
 def Cofork.IsColimit.ofExistsUnique {t : Cofork f g}
-    (hs : ∀ s : Cofork f g, ∃! d : t.pt ⟶ s.pt, Cofork.π t ≫ d = Cofork.π s) : IsColimit t :=
-  by
-  choose d hd hd' using hs
-  exact cofork.is_colimit.mk _ d hd fun s m hm => hd' _ _ hm
+    (hs : ∀ s : Cofork f g, ∃! d : t.pt ⟶ s.pt, Cofork.π t ≫ d = Cofork.π s) : IsColimit t := by
+  choose d hd hd' using hs; exact cofork.is_colimit.mk _ d hd fun s m hm => hd' _ _ hm
 #align category_theory.limits.cofork.is_colimit.of_exists_unique CategoryTheory.Limits.Cofork.IsColimit.ofExistsUnique
 
 #print CategoryTheory.Limits.Fork.IsLimit.homIso /-
@@ -1217,9 +1189,7 @@ def idFork (h : f = g) : Fork f g :=
 #print CategoryTheory.Limits.isLimitIdFork /-
 /-- The identity on `X` is an equalizer of `(f, g)`, if `f = g`. -/
 def isLimitIdFork (h : f = g) : IsLimit (idFork h) :=
-  Fork.IsLimit.mk _ (fun s => Fork.ι s) (fun s => Category.comp_id _) fun s m h =>
-    by
-    convert h
+  Fork.IsLimit.mk _ (fun s => Fork.ι s) (fun s => Category.comp_id _) fun s m h => by convert h;
     exact (category.comp_id _).symm
 #align category_theory.limits.is_limit_id_fork CategoryTheory.Limits.isLimitIdFork
 -/
@@ -1314,9 +1284,7 @@ theorem equalizer.isoSourceOfSelf_hom : (equalizer.isoSourceOfSelf f).Hom = equa
 #print CategoryTheory.Limits.equalizer.isoSourceOfSelf_inv /-
 @[simp]
 theorem equalizer.isoSourceOfSelf_inv :
-    (equalizer.isoSourceOfSelf f).inv = equalizer.lift (𝟙 X) (by simp) :=
-  by
-  ext
+    (equalizer.isoSourceOfSelf f).inv = equalizer.lift (𝟙 X) (by simp) := by ext;
   simp [equalizer.iso_source_of_self]
 #align category_theory.limits.equalizer.iso_source_of_self_inv CategoryTheory.Limits.equalizer.isoSourceOfSelf_inv
 -/
@@ -1489,10 +1457,8 @@ def idCofork (h : f = g) : Cofork f g :=
 #print CategoryTheory.Limits.isColimitIdCofork /-
 /-- The identity on `Y` is a coequalizer of `(f, g)`, where `f = g`.  -/
 def isColimitIdCofork (h : f = g) : IsColimit (idCofork h) :=
-  Cofork.IsColimit.mk _ (fun s => Cofork.π s) (fun s => Category.id_comp _) fun s m h =>
-    by
-    convert h
-    exact (category.id_comp _).symm
+  Cofork.IsColimit.mk _ (fun s => Cofork.π s) (fun s => Category.id_comp _) fun s m h => by
+    convert h; exact (category.id_comp _).symm
 #align category_theory.limits.is_colimit_id_cofork CategoryTheory.Limits.isColimitIdCofork
 -/
 
@@ -1580,9 +1546,7 @@ def coequalizer.isoTargetOfSelf : coequalizer f f ≅ Y :=
 #print CategoryTheory.Limits.coequalizer.isoTargetOfSelf_hom /-
 @[simp]
 theorem coequalizer.isoTargetOfSelf_hom :
-    (coequalizer.isoTargetOfSelf f).Hom = coequalizer.desc (𝟙 Y) (by simp) :=
-  by
-  ext
+    (coequalizer.isoTargetOfSelf f).Hom = coequalizer.desc (𝟙 Y) (by simp) := by ext;
   simp [coequalizer.iso_target_of_self]
 #align category_theory.limits.coequalizer.iso_target_of_self_hom CategoryTheory.Limits.coequalizer.isoTargetOfSelf_hom
 -/
@@ -1630,9 +1594,7 @@ theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f)
     {h : Z ⟶ X} (w : h ≫ f = h ≫ g) :
     G.map (equalizer.lift h w) ≫ equalizerComparison f g G =
       equalizer.lift (G.map h) (by simp only [← G.map_comp, w]) :=
-  by
-  ext
-  simp [← G.map_comp]
+  by ext; simp [← G.map_comp]
 #align category_theory.limits.map_lift_equalizer_comparison CategoryTheory.Limits.map_lift_equalizerComparison
 
 /- warning: category_theory.limits.coequalizer_comparison -> CategoryTheory.Limits.coequalizerComparison is a dubious translation:
@@ -1664,9 +1626,7 @@ theorem coequalizerComparison_map_desc [HasCoequalizer f g] [HasCoequalizer (G.m
     {Z : C} {h : Y ⟶ Z} (w : f ≫ h = g ≫ h) :
     coequalizerComparison f g G ≫ G.map (coequalizer.desc h w) =
       coequalizer.desc (G.map h) (by simp only [← G.map_comp, w]) :=
-  by
-  ext
-  simp [← G.map_comp]
+  by ext; simp [← G.map_comp]
 #align category_theory.limits.coequalizer_comparison_map_desc CategoryTheory.Limits.coequalizerComparison_map_desc
 
 end Comparison
@@ -1734,10 +1694,8 @@ theorem coneOfIsSplitMono_ι : (coneOfIsSplitMono f).ι = f :=
 -/
 def isSplitMonoEqualizes {X Y : C} (f : X ⟶ Y) [IsSplitMono f] : IsLimit (coneOfIsSplitMono f) :=
   Fork.IsLimit.mk' _ fun s =>
-    ⟨s.ι ≫ retraction f, by
-      dsimp
-      rw [category.assoc, ← s.condition]
-      apply category.comp_id, fun m hm => by simp [← hm]⟩
+    ⟨s.ι ≫ retraction f, by dsimp; rw [category.assoc, ← s.condition]; apply category.comp_id,
+      fun m hm => by simp [← hm]⟩
 #align category_theory.limits.is_split_mono_equalizes CategoryTheory.Limits.isSplitMonoEqualizes
 -/
 
@@ -1836,9 +1794,8 @@ theorem coconeOfIsSplitEpi_π : (coconeOfIsSplitEpi f).π = f :=
 -/
 def isSplitEpiCoequalizes {X Y : C} (f : X ⟶ Y) [IsSplitEpi f] : IsColimit (coconeOfIsSplitEpi f) :=
   Cofork.IsColimit.mk' _ fun s =>
-    ⟨section_ f ≫ s.π, by
-      dsimp
-      rw [← category.assoc, ← s.condition, category.id_comp], fun m hm => by simp [← hm]⟩
+    ⟨section_ f ≫ s.π, by dsimp; rw [← category.assoc, ← s.condition, category.id_comp], fun m hm =>
+      by simp [← hm]⟩
 #align category_theory.limits.is_split_epi_coequalizes CategoryTheory.Limits.isSplitEpiCoequalizes
 -/

f4758115

bump to nightly-2023-05-28-03

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

6c6011cf

Diff

@@ -238,10 +238,7 @@ theorem walkingParallelPairOpEquiv_unitIso_one :
 #align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_one
 
 /- warning: category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero -> CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero is a dubious translation:
-lean 3 declaration is
-  Eq.{1} (CategoryTheory.Iso.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.obj.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Functor.obj.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))) (CategoryTheory.Iso.app.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} 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CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Equivalence.counitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.refl.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))
-but is expected to have type
-  Eq.{1} (CategoryTheory.Iso.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Prefunctor.obj.{1, 1, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} 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(Prefunctor.obj.{1, 1, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))) (CategoryTheory.Iso.app.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair 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(CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Equivalence.counitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.refl.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))
+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zeroₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_zero :
@@ -250,10 +247,7 @@ theorem walkingParallelPairOpEquiv_counitIso_zero :
 #align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero
 
 /- warning: category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one -> CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_one is a dubious translation:
-lean 3 declaration is
-  Eq.{1} (CategoryTheory.Iso.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.obj.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory 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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_oneₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_one :
@@ -373,10 +367,7 @@ def parallelPairHom {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X
 -/
 
 /- warning: category_theory.limits.parallel_pair_hom_app_zero -> CategoryTheory.Limits.parallelPairHom_app_zero is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_hom_app_zero CategoryTheory.Limits.parallelPairHom_app_zeroₓ'. -/
 @[simp]
 theorem parallelPairHom_app_zero {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
@@ -386,10 +377,7 @@ theorem parallelPairHom_app_zero {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y')
 #align category_theory.limits.parallel_pair_hom_app_zero CategoryTheory.Limits.parallelPairHom_app_zero
 
 /- warning: category_theory.limits.parallel_pair_hom_app_one -> CategoryTheory.Limits.parallelPairHom_app_one is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_hom_app_one CategoryTheory.Limits.parallelPairHom_app_oneₓ'. -/
 @[simp]
 theorem parallelPairHom_app_one {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
@@ -399,10 +387,7 @@ theorem parallelPairHom_app_one {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y')
 #align category_theory.limits.parallel_pair_hom_app_one CategoryTheory.Limits.parallelPairHom_app_one
 
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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C 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CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) 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CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} 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CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.zero) zero) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} 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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.extₓ'. -/
 /-- Construct a natural isomorphism between functors out of the walking parallel pair from
 its components. -/
@@ -492,10 +477,7 @@ theorem Cofork.app_one_eq_π (t : Cofork f g) : t.ι.app one = t.π :=
 #align category_theory.limits.cofork.app_one_eq_π CategoryTheory.Limits.Cofork.app_one_eq_π
 
 /- warning: category_theory.limits.fork.app_one_eq_ι_comp_left -> CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left is a dubious translation:
-lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.app_one_eq_ι_comp_left CategoryTheory.Limits.Fork.app_one_eq_ι_comp_leftₓ'. -/
 @[simp]
 theorem Fork.app_one_eq_ι_comp_left (s : Fork f g) : s.π.app one = s.ι ≫ f := by
@@ -503,10 +485,7 @@ theorem Fork.app_one_eq_ι_comp_left (s : Fork f g) : s.π.app one = s.ι ≫ f
 #align category_theory.limits.fork.app_one_eq_ι_comp_left CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_rightₓ'. -/
 @[reassoc]
 theorem Fork.app_one_eq_ι_comp_right (s : Fork f g) : s.π.app one = s.ι ≫ g := by
@@ -514,10 +493,7 @@ theorem Fork.app_one_eq_ι_comp_right (s : Fork f g) : s.π.app one = s.ι ≫ g
 #align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.app_zero_eq_comp_π_left CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_leftₓ'. -/
 @[simp]
 theorem Cofork.app_zero_eq_comp_π_left (s : Cofork f g) : s.ι.app zero = f ≫ s.π := by
@@ -525,10 +501,7 @@ theorem Cofork.app_zero_eq_comp_π_left (s : Cofork f g) : s.ι.app zero = f ≫
 #align category_theory.limits.cofork.app_zero_eq_comp_π_left CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_left
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.app_zero_eq_comp_π_right CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_rightₓ'. -/
 @[reassoc]
 theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g ≫ s.π := by
@@ -593,10 +566,7 @@ theorem Cofork.π_ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : (Cofor
 #align category_theory.limits.cofork.π_of_π CategoryTheory.Limits.Cofork.π_ofπ
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.conditionₓ'. -/
 @[simp, reassoc]
 theorem Fork.condition (t : Fork f g) : t.ι ≫ f = t.ι ≫ g := by
@@ -604,10 +574,7 @@ theorem Fork.condition (t : Fork f g) : t.ι ≫ f = t.ι ≫ g := by
 #align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.condition
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.conditionₓ'. -/
 @[simp, reassoc]
 theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
@@ -615,10 +582,7 @@ theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
 #align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.condition
 
 /- warning: category_theory.limits.fork.equalizer_ext -> CategoryTheory.Limits.Fork.equalizer_ext is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_extₓ'. -/
 /-- To check whether two maps are equalized by both maps of a fork, it suffices to check it for the
     first map -/
@@ -629,10 +593,7 @@ theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫
 #align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_ext
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.coequalizer_ext CategoryTheory.Limits.Cofork.coequalizer_extₓ'. -/
 /-- To check whether two maps are coequalized by both maps of a cofork, it suffices to check it for
     the second map -/
@@ -654,10 +615,7 @@ theorem Fork.IsLimit.hom_ext {s : Fork f g} (hs : IsLimit s) {W : C} {k l : W 
 #align category_theory.limits.fork.is_limit.hom_ext CategoryTheory.Limits.Fork.IsLimit.hom_ext
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_ext CategoryTheory.Limits.Cofork.IsColimit.hom_extₓ'. -/
 theorem Cofork.IsColimit.hom_ext {s : Cofork f g} (hs : IsColimit s) {W : C} {k l : s.pt ⟶ W}
     (h : Cofork.π s ≫ k = Cofork.π s ≫ l) : k = l :=
@@ -700,10 +658,7 @@ def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h
 #align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'ₓ'. -/
 /-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
     `f ≫ k = g ≫ k` induces a morphism `l : s.X ⟶ W` such that `cofork.π s ≫ l = k`. -/
@@ -725,10 +680,7 @@ theorem Fork.IsLimit.existsUnique {s : Fork f g} (hs : IsLimit s) {W : C} (k : W
 #align category_theory.limits.fork.is_limit.exists_unique CategoryTheory.Limits.Fork.IsLimit.existsUnique
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUniqueₓ'. -/
 theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
     (h : f ≫ k = g ≫ k) : ∃! d : s.pt ⟶ W, Cofork.π s ≫ d = k :=
@@ -737,10 +689,7 @@ theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C
 #align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUnique
 
 /- warning: category_theory.limits.fork.is_limit.mk -> CategoryTheory.Limits.Fork.IsLimit.mk is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mkₓ'. -/
 /-- This is a slightly more convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content -/
@@ -756,10 +705,7 @@ def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.pt ⟶ t.pt)
 #align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mk
 
 /- warning: category_theory.limits.fork.is_limit.mk' -> CategoryTheory.Limits.Fork.IsLimit.mk' is a dubious translation:
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_inst_1 X Y f g) t)
+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.mk' CategoryTheory.Limits.Fork.IsLimit.mk'ₓ'. -/
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
@@ -770,10 +716,7 @@ def Fork.IsLimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Fork f g)
 #align category_theory.limits.fork.is_limit.mk' CategoryTheory.Limits.Fork.IsLimit.mk'
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mkₓ'. -/
 /-- This is a slightly more convenient method to verify that a cofork is a colimit cocone. It
     only asks for a proof of facts that carry any mathematical content -/
@@ -788,10 +731,7 @@ def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.
 #align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mk
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.mk' CategoryTheory.Limits.Cofork.IsColimit.mk'ₓ'. -/
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
@@ -819,10 +759,7 @@ def Fork.IsLimit.ofExistsUnique {t : Fork f g}
 #align category_theory.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUnique
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.of_exists_unique CategoryTheory.Limits.Cofork.IsColimit.ofExistsUniqueₓ'. -/
 /-- Noncomputably make a colimit cocone from the existence of unique factorizations. -/
 def Cofork.IsColimit.ofExistsUnique {t : Cofork f g}
@@ -851,10 +788,7 @@ def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t
 -/
 
 /- warning: category_theory.limits.fork.is_limit.hom_iso_natural -> CategoryTheory.Limits.Fork.IsLimit.homIso_natural is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_naturalₓ'. -/
 /-- The bijection of `fork.is_limit.hom_iso` is natural in `Z`. -/
 theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t)
@@ -881,10 +815,7 @@ def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsC
 -/
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_naturalₓ'. -/
 /-- The bijection of `cofork.is_colimit.hom_iso` is natural in `Z`. -/
 theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} {Z Z' : C}
@@ -938,10 +869,7 @@ def Cocone.ofCofork {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.
 #align category_theory.limits.cocone.of_cofork CategoryTheory.Limits.Cocone.ofCofork
 
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CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} 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(CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (of_eq_true (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} 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CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Eq.{succ u2} C) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j)) (eq_self.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j))))))
+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cone.of_fork_π CategoryTheory.Limits.Cone.ofFork_πₓ'. -/
 @[simp]
 theorem Cone.ofFork_π {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map right)) (j) :
@@ -950,10 +878,7 @@ theorem Cone.ofFork_π {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F
 #align category_theory.limits.cone.of_fork_π CategoryTheory.Limits.Cone.ofFork_π
 
 /- warning: category_theory.limits.cocone.of_cofork_ι -> CategoryTheory.Limits.Cocone.ofCofork_ι is a dubious translation:
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0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) 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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t)) (CategoryTheory.Limits.Cocone.ι.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t) j))
-but is expected to have type
-  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} (t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) 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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Limits.Cocone.ofCofork.{u1, u2} C _inst_1 F t)) j) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t))) j) (CategoryTheory.eqToHom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (of_eq_true (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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(CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j)) (Eq.trans.{1} Prop (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j)) (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) 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(CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} 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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j))))) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) 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(CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t)) (CategoryTheory.Limits.Cocone.ι.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t) j))
+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cocone.of_cofork_ι CategoryTheory.Limits.Cocone.ofCofork_ιₓ'. -/
 @[simp]
 theorem Cocone.ofCofork_ι {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.map right))
@@ -992,10 +917,7 @@ def Cofork.ofCocone {F : WalkingParallelPair ⥤ C} (t : Cocone F) : Cofork (F.m
 #align category_theory.limits.cofork.of_cocone CategoryTheory.Limits.Cofork.ofCocone
 
 /- warning: category_theory.limits.fork.of_cone_π -> CategoryTheory.Limits.Fork.ofCone_π is a dubious translation:
-lean 3 declaration is
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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j)) True) (Eq.trans.{1} Prop (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (rfl.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j)) (propext (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True (eq_self_iff_true.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j))))) trivial)))
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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (CategoryTheory.Limits.Fork.ofCone.{u1, u2} C _inst_1 F t)))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} 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(CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) 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CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j)) (Eq.trans.{1} Prop (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j)) (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j)) True (congrArg.{succ u2, 1} C Prop (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j)) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j)) (eq_self.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j))))))
+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.of_cone_π CategoryTheory.Limits.Fork.ofCone_πₓ'. -/
 @[simp]
 theorem Fork.ofCone_π {F : WalkingParallelPair ⥤ C} (t : Cone F) (j) :
@@ -1004,10 +926,7 @@ theorem Fork.ofCone_π {F : WalkingParallelPair ⥤ C} (t : Cone F) (j) :
 #align category_theory.limits.fork.of_cone_π CategoryTheory.Limits.Fork.ofCone_π
 
 /- warning: category_theory.limits.cofork.of_cocone_ι -> CategoryTheory.Limits.Cofork.ofCocone_ι is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.of_cocone_ι CategoryTheory.Limits.Cofork.ofCocone_ιₓ'. -/
 @[simp]
 theorem Cofork.ofCocone_ι {F : WalkingParallelPair ⥤ C} (t : Cocone F) (j) :
@@ -1016,10 +935,7 @@ theorem Cofork.ofCocone_ι {F : WalkingParallelPair ⥤ C} (t : Cocone F) (j) :
 #align category_theory.limits.cofork.of_cocone_ι CategoryTheory.Limits.Cofork.ofCocone_ι
 
 /- warning: category_theory.limits.fork.ι_postcompose -> CategoryTheory.Limits.Fork.ι_postcompose is a dubious translation:
-lean 3 declaration is
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ι_postcompose CategoryTheory.Limits.Fork.ι_postcomposeₓ'. -/
 @[simp]
 theorem Fork.ι_postcompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
@@ -1028,10 +944,7 @@ theorem Fork.ι_postcompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ paralle
 #align category_theory.limits.fork.ι_postcompose CategoryTheory.Limits.Fork.ι_postcompose
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.π_precompose CategoryTheory.Limits.Cofork.π_precomposeₓ'. -/
 @[simp]
 theorem Cofork.π_precompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
@@ -1086,10 +999,7 @@ def Fork.isoForkOfι (c : Fork f g) : c ≅ Fork.ofι c.ι c.condition :=
 #align category_theory.limits.fork.iso_fork_of_ι CategoryTheory.Limits.Fork.isoForkOfι
 
 /- warning: category_theory.limits.cofork.mk_hom -> CategoryTheory.Limits.Cofork.mkHom is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.mk_hom CategoryTheory.Limits.Cofork.mkHomₓ'. -/
 /-- Helper function for constructing morphisms between coequalizer coforks.
 -/
@@ -1124,10 +1034,7 @@ theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.
 #align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_hom
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.ext CategoryTheory.Limits.Cofork.extₓ'. -/
 /-- To construct an isomorphism between coforks,
 it suffices to give an isomorphism between the cocone points
@@ -1348,10 +1255,7 @@ theorem isIso_limit_cone_parallelPair_of_self {c : Fork f f} (h : IsLimit c) : I
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_self CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_self
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_limit_cone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_epiₓ'. -/
 /-- An equalizer that is an epimorphism is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_epi {c : Fork f g} (h : IsLimit c) [Epi c.ι] : IsIso c.ι :=
@@ -1623,10 +1527,7 @@ theorem isIso_colimit_cocone_parallelPair_of_self {c : Cofork f f} (h : IsColimi
 #align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_self CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_self
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_limit_cocone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cocone_parallelPair_of_epiₓ'. -/
 /-- A coequalizer that is a monomorphism is an isomorphism. -/
 theorem isIso_limit_cocone_parallelPair_of_epi {c : Cofork f g} (h : IsColimit c) [Mono c.π] :
@@ -1713,10 +1614,7 @@ def equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
 #align category_theory.limits.equalizer_comparison CategoryTheory.Limits.equalizerComparison
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.equalizer_comparison_comp_π CategoryTheory.Limits.equalizerComparison_comp_πₓ'. -/
 @[simp, reassoc]
 theorem equalizerComparison_comp_π [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
@@ -1725,10 +1623,7 @@ theorem equalizerComparison_comp_π [HasEqualizer f g] [HasEqualizer (G.map f) (
 #align category_theory.limits.equalizer_comparison_comp_π CategoryTheory.Limits.equalizerComparison_comp_π
 
 /- warning: category_theory.limits.map_lift_equalizer_comparison -> CategoryTheory.Limits.map_lift_equalizerComparison is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.map_lift_equalizer_comparison CategoryTheory.Limits.map_lift_equalizerComparisonₓ'. -/
 @[simp, reassoc]
 theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] {Z : C}
@@ -1753,10 +1648,7 @@ def coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map
 #align category_theory.limits.coequalizer_comparison CategoryTheory.Limits.coequalizerComparison
 
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.ι_comp_coequalizer_comparison CategoryTheory.Limits.ι_comp_coequalizerComparisonₓ'. -/
 @[simp, reassoc]
 theorem ι_comp_coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
@@ -1765,10 +1657,7 @@ theorem ι_comp_coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.ma
 #align category_theory.limits.ι_comp_coequalizer_comparison CategoryTheory.Limits.ι_comp_coequalizerComparison
 
 /- warning: category_theory.limits.coequalizer_comparison_map_desc -> CategoryTheory.Limits.coequalizerComparison_map_desc is a dubious translation:
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(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 G) x_0 x_1 f) (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 G) x_1 x_2 g)) ((fun (x_0 : C) (x_1 : C) (x_2 : C) => CategoryTheory.Functor.map_comp.{u1, u2, u3, u4} C _inst_1 D _inst_2 G x_0 x_1 x_2) x_0 x_1 x_2 f g)) X Y Z g h)) (eq_self.{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 G) X) (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 G) Z)) (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 G) X Z (CategoryTheory.CategoryStruct.comp.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) X Y Z g h))))))
+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.coequalizer_comparison_map_desc CategoryTheory.Limits.coequalizerComparison_map_descₓ'. -/
 @[simp, reassoc]
 theorem coequalizerComparison_map_desc [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)]

f4758115

bump to nightly-2023-05-23-03

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

ed98987c

Diff

@@ -508,7 +508,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (s : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) (CategoryTheory.Limits.Cone.π.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) Y (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g s) g)
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_rightₓ'. -/
-@[reassoc.1]
+@[reassoc]
 theorem Fork.app_one_eq_ι_comp_right (s : Fork f g) : s.π.app one = s.ι ≫ g := by
   rw [← s.app_zero_eq_ι, ← s.w right, parallel_pair_map_right]
 #align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right
@@ -530,7 +530,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.Limits.Cocone.ι.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) X Y (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.one) g (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s))
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.app_zero_eq_comp_π_right CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_rightₓ'. -/
-@[reassoc.1]
+@[reassoc]
 theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g ≫ s.π := by
   rw [← s.app_one_eq_π, ← s.w right, parallel_pair_map_right]
 #align category_theory.limits.cofork.app_zero_eq_comp_π_right CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_right
@@ -598,7 +598,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (t : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.zero) Y) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) Y (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g t) f) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) Y (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g t) g)
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.conditionₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem Fork.condition (t : Fork f g) : t.ι ≫ f = t.ι ≫ g := by
   rw [← t.app_one_eq_ι_comp_left, ← t.app_one_eq_ι_comp_right]
 #align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.condition
@@ -609,7 +609,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) X Y (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.one) f (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) X Y (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.one) g (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t))
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.conditionₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
   rw [← t.app_zero_eq_comp_π_left, ← t.app_zero_eq_comp_π_right]
 #align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.condition
@@ -670,7 +670,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {s : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g} {t : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g} (hs : CategoryTheory.Limits.IsLimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Limits.IsLimit.lift.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s hs t) (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g s)) (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g t)
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.lift_ι CategoryTheory.Limits.Fork.IsLimit.lift_ιₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem Fork.IsLimit.lift_ι {s t : Fork f g} (hs : IsLimit s) : hs.lift t ≫ s.ι = t.ι :=
   hs.fac _ _
 #align category_theory.limits.fork.is_limit.lift_ι CategoryTheory.Limits.Fork.IsLimit.lift_ι
@@ -681,7 +681,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g} {t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g} (hs : CategoryTheory.Limits.IsColimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s) (CategoryTheory.Limits.IsColimit.desc.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s hs t)) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t)
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_descₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem Cofork.IsColimit.π_desc {s t : Cofork f g} (hs : IsColimit s) : s.π ≫ hs.desc t = t.π :=
   hs.fac _ _
 #align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_desc
@@ -1109,7 +1109,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {s : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y g f} {t : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y g f} (f_1 : Quiver.Hom.{succ u1, max u2 u1} (CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y g f) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y g f) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y g f) (CategoryTheory.Limits.Cone.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f)))) s t), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) s) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f)) CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) s) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) t) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f)) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Limits.ConeMorphism.Hom.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) s t f_1) (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y g f t)) (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y g f s)
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ιₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem Fork.hom_comp_ι {s t : Fork f g} (f : s ⟶ t) : f.Hom ≫ t.ι = s.ι := by tidy
 #align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ι
 
@@ -1119,7 +1119,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y g f} {t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y g f} (f_1 : Quiver.Hom.{succ u1, max u2 u1} (CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y g f) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y g f) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y g f) (CategoryTheory.Limits.Cocone.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f)))) s t), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) t)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f)) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) s))) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) t) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y g f s) (CategoryTheory.Limits.CoconeMorphism.Hom.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y g f) s t f_1)) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y g f t)
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_homₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.π := by tidy
 #align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_hom
 
@@ -1213,7 +1213,7 @@ theorem equalizer.fork_π_app_zero : (equalizer.fork f g).π.app zero = equalize
 #align category_theory.limits.equalizer.fork_π_app_zero CategoryTheory.Limits.equalizer.fork_π_app_zero
 
 #print CategoryTheory.Limits.equalizer.condition /-
-@[reassoc.1]
+@[reassoc]
 theorem equalizer.condition : equalizer.ι f g ≫ f = equalizer.ι f g ≫ g :=
   Fork.condition <| limit.cone <| parallelPair f g
 #align category_theory.limits.equalizer.condition CategoryTheory.Limits.equalizer.condition
@@ -1237,7 +1237,7 @@ abbrev equalizer.lift {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) : W ⟶ equa
 -/
 
 #print CategoryTheory.Limits.equalizer.lift_ι /-
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem equalizer.lift_ι {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
     equalizer.lift k h ≫ equalizer.ι f g = k :=
   limit.lift_π _ _
@@ -1477,7 +1477,7 @@ theorem coequalizer.cofork_ι_app_one : (coequalizer.cofork f g).ι.app one = co
 #align category_theory.limits.coequalizer.cofork_ι_app_one CategoryTheory.Limits.coequalizer.cofork_ι_app_one
 
 #print CategoryTheory.Limits.coequalizer.condition /-
-@[reassoc.1]
+@[reassoc]
 theorem coequalizer.condition : f ≫ coequalizer.π f g = g ≫ coequalizer.π f g :=
   Cofork.condition <| colimit.cocone <| parallelPair f g
 #align category_theory.limits.coequalizer.condition CategoryTheory.Limits.coequalizer.condition
@@ -1502,7 +1502,7 @@ abbrev coequalizer.desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) : coequali
 -/
 
 #print CategoryTheory.Limits.coequalizer.π_desc /-
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem coequalizer.π_desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) :
     coequalizer.π f g ≫ coequalizer.desc k h = k :=
   colimit.ι_desc _ _
@@ -1718,7 +1718,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {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) (g : Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X Y) {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] (G : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2) [_inst_3 : CategoryTheory.Limits.HasEqualizer.{u1, u3} C _inst_1 X Y f g] [_inst_4 : CategoryTheory.Limits.HasEqualizer.{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 G) X) (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 G) Y) (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 G) X Y f) (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 G) X Y g)], 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 G) (CategoryTheory.Limits.equalizer.{u1, u3} C _inst_1 X Y f g _inst_3)) (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 G) X)) (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 (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 G) (CategoryTheory.Limits.equalizer.{u1, u3} C _inst_1 X Y f g _inst_3)) (CategoryTheory.Limits.equalizer.{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 G) X) (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 G) Y) (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 G) X Y f) (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 G) X Y g) _inst_4) (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 G) X) (CategoryTheory.Limits.equalizerComparison.{u1, u2, u3, u4} C _inst_1 X Y f g D _inst_2 G _inst_3 _inst_4) (CategoryTheory.Limits.equalizer.ι.{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 G) X) (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 G) Y) (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 G) X Y f) (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 G) X Y g) _inst_4)) (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 G) (CategoryTheory.Limits.equalizer.{u1, u3} C _inst_1 X Y f g _inst_3) X (CategoryTheory.Limits.equalizer.ι.{u1, u3} C _inst_1 X Y f g _inst_3))
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.equalizer_comparison_comp_π CategoryTheory.Limits.equalizerComparison_comp_πₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem equalizerComparison_comp_π [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
     equalizerComparison f g G ≫ equalizer.ι (G.map f) (G.map g) = G.map (equalizer.ι f g) :=
   equalizer.lift_ι _ _
@@ -1730,7 +1730,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {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) (g : Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X Y) {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] (G : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2) [_inst_3 : CategoryTheory.Limits.HasEqualizer.{u1, u3} C _inst_1 X Y f g] [_inst_4 : CategoryTheory.Limits.HasEqualizer.{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 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_inst_2)) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u3, u4} C _inst_1 D _inst_2 G) X Y g)] {Z : C} {h : Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) Z X} (w : Eq.{succ u1} (Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) Z Y) (CategoryTheory.CategoryStruct.comp.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) Z X Y h f) (CategoryTheory.CategoryStruct.comp.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) Z X Y h g)), 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 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(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 G) x_2)) (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 G) x_0 x_2 (CategoryTheory.CategoryStruct.comp.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) x_0 x_1 x_2 f g)) (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 (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 G) x_0) (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 G) x_1) (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 G) x_2) (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 G) x_0 x_1 f) (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 G) x_1 x_2 g)) ((fun (x_0 : C) (x_1 : C) (x_2 : C) => CategoryTheory.Functor.map_comp.{u1, u2, u3, u4} C _inst_1 D _inst_2 G x_0 x_1 x_2) x_0 x_1 x_2 f g)) Z X Y h g)) (eq_self.{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 G) Z) (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 G) Y)) (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 G) Z Y (CategoryTheory.CategoryStruct.comp.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1) Z X Y h g))))))
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.map_lift_equalizer_comparison CategoryTheory.Limits.map_lift_equalizerComparisonₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] {Z : C}
     {h : Z ⟶ X} (w : h ≫ f = h ≫ g) :
     G.map (equalizer.lift h w) ≫ equalizerComparison f g G =
@@ -1758,7 +1758,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {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) (g : Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X Y) {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] (G : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2) [_inst_3 : CategoryTheory.Limits.HasCoequalizer.{u1, u3} C _inst_1 X Y f g] [_inst_4 : CategoryTheory.Limits.HasCoequalizer.{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 G) X) (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 G) Y) (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 G) X Y f) (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 G) X Y g)], 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 G) Y) (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 G) (CategoryTheory.Limits.coequalizer.{u1, u3} C _inst_1 X Y f g _inst_3))) (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 (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 G) Y) (CategoryTheory.Limits.coequalizer.{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 G) X) (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 G) Y) (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 G) X Y f) (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 G) X Y g) _inst_4) (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 G) (CategoryTheory.Limits.coequalizer.{u1, u3} C _inst_1 X Y f g _inst_3)) (CategoryTheory.Limits.coequalizer.π.{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 G) X) (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 G) Y) (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 G) X Y f) (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 G) X Y g) _inst_4) (CategoryTheory.Limits.coequalizerComparison.{u1, u2, u3, u4} C _inst_1 X Y f g D _inst_2 G _inst_3 _inst_4)) (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 G) Y (CategoryTheory.Limits.coequalizer.{u1, u3} C _inst_1 X Y f g _inst_3) (CategoryTheory.Limits.coequalizer.π.{u1, u3} C _inst_1 X Y f g _inst_3))
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.ι_comp_coequalizer_comparison CategoryTheory.Limits.ι_comp_coequalizerComparisonₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem ι_comp_coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer.π _ _ ≫ coequalizerComparison f g G = G.map (coequalizer.π _ _) :=
   coequalizer.π_desc _ _
@@ -1770,7 +1770,7 @@ lean 3 declaration is
 but is expected to have type
   forall {C : Type.{u3}} [_inst_1 : CategoryTheory.Category.{u1, u3} C] {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) (g : Quiver.Hom.{succ u1, u3} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u3} C (CategoryTheory.Category.toCategoryStruct.{u1, u3} C _inst_1)) X Y) {D : Type.{u4}} [_inst_2 : CategoryTheory.Category.{u2, u4} D] (G : CategoryTheory.Functor.{u1, u2, u3, u4} C _inst_1 D _inst_2) [_inst_3 : CategoryTheory.Limits.HasCoequalizer.{u1, u3} C _inst_1 X Y f g] [_inst_4 : CategoryTheory.Limits.HasCoequalizer.{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 G) X) (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 G) Y) (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 G) X Y f) (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} 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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.coequalizer_comparison_map_desc CategoryTheory.Limits.coequalizerComparison_map_descₓ'. -/
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem coequalizerComparison_map_desc [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)]
     {Z : C} {h : Y ⟶ Z} (w : f ≫ h = g ≫ h) :
     coequalizerComparison f g G ≫ G.map (coequalizer.desc h w) =

f4758115

bump to nightly-2023-05-19-16

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

a31df521

Diff

@@ -854,7 +854,7 @@ def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_naturalₓ'. -/
 /-- The bijection of `fork.is_limit.hom_iso` is natural in `Z`. -/
 theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t)
@@ -884,7 +884,7 @@ def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsC
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_naturalₓ'. -/
 /-- The bijection of `cofork.is_colimit.hom_iso` is natural in `Z`. -/
 theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} {Z Z' : C}

f4758115

bump to nightly-2023-04-18-06

mathlib commit https://github.com/leanprover-community/mathlib/commit/49b7f94aab3a3bdca1f9f34c5d818afb253b3993

c37d1701

Diff

@@ -201,11 +201,11 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
       (fun j =>
         eqToIso
           (by
-            induction j using Opposite.rec
+            induction j using Opposite.rec'
             cases j <;> rfl))
       fun i j f => by
-      induction i using Opposite.rec
-      induction j using Opposite.rec
+      induction i using Opposite.rec'
+      induction j using Opposite.rec'
       let g := f.unop
       have : f = g.op := rfl
       clear_value g

f4758115

bump to nightly-2023-03-11-22

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

a8ee822f

Diff

@@ -854,7 +854,7 @@ def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_naturalₓ'. -/
 /-- The bijection of `fork.is_limit.hom_iso` is natural in `Z`. -/
 theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t)
@@ -884,7 +884,7 @@ def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsC
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_inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) Z) (fun (_x : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) Z) => (fun (x._@.Mathlib.Logic.Equiv.Defs._hyg.808 : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) Z) => Subtype.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) Y Z) (fun (h : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) Y Z) => Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Z) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) X Y Z f h) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) X Y Z g h))) _x) (Equiv.instFunLikeEquiv.{succ u1, succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) Z) (Subtype.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) Y Z) (fun (h : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) Y Z) => Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Z) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) X Y Z f h) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) X Y Z g h)))) (CategoryTheory.Limits.Cofork.IsColimit.homIso.{u1, u2} C _inst_1 X Y f g t ht Z) k)) q)
 Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_naturalₓ'. -/
 /-- The bijection of `cofork.is_colimit.hom_iso` is natural in `Z`. -/
 theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} {Z Z' : C}

f4758115

bump to nightly-2023-03-09-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/21e3562c5e12d846c7def5eff8cdbc520d7d4936

061741a1

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison, Markus Himmel
 
 ! This file was ported from Lean 3 source module category_theory.limits.shapes.equalizers
-! leanprover-community/mathlib commit 4698e35ca56a0d4fa53aa5639c3364e0a77f4eba
+! leanprover-community/mathlib commit f47581155c818e6361af4e4fda60d27d020c226b
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -14,6 +14,9 @@ import Mathbin.CategoryTheory.Limits.HasLimits
 /-!
 # Equalizers and coequalizers
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 This file defines (co)equalizers as special cases of (co)limits.
 
 An equalizer is the categorical generalization of the subobject {a ∈ A | f(a) = g(a)} known

4698e35c

bump to nightly-2023-03-02-23

mathlib commit https://github.com/leanprover-community/mathlib/commit/195fcd60ff2bfe392543bceb0ec2adcdb472db4c

ec1a9cbb

Diff

@@ -59,15 +59,18 @@ attribute [local tidy] tactic.case_bash
 
 universe v v₂ u u₂
 
+#print CategoryTheory.Limits.WalkingParallelPair /-
 /-- The type of objects for the diagram indexing a (co)equalizer. -/
 inductive WalkingParallelPair : Type
   | zero
   | one
   deriving DecidableEq, Inhabited
 #align category_theory.limits.walking_parallel_pair CategoryTheory.Limits.WalkingParallelPair
+-/
 
 open WalkingParallelPair
 
+#print CategoryTheory.Limits.WalkingParallelPairHom /-
 /-- The type family of morphisms for the diagram indexing a (co)equalizer. -/
 inductive WalkingParallelPairHom : WalkingParallelPair → WalkingParallelPair → Type
   | left : walking_parallel_pair_hom zero one
@@ -75,12 +78,14 @@ inductive WalkingParallelPairHom : WalkingParallelPair → WalkingParallelPair 
   | id : ∀ X : WalkingParallelPair, walking_parallel_pair_hom X X
   deriving DecidableEq
 #align category_theory.limits.walking_parallel_pair_hom CategoryTheory.Limits.WalkingParallelPairHom
+-/
 
 /-- Satisfying the inhabited linter -/
 instance : Inhabited (WalkingParallelPairHom zero one) where default := WalkingParallelPairHom.left
 
 open WalkingParallelPairHom
 
+#print CategoryTheory.Limits.WalkingParallelPairHom.comp /-
 /-- Composition of morphisms in the indexing diagram for (co)equalizers. -/
 def WalkingParallelPairHom.comp :
     ∀ (X Y Z : WalkingParallelPair) (f : WalkingParallelPairHom X Y)
@@ -89,19 +94,25 @@ def WalkingParallelPairHom.comp :
   | _, _, _, left, id one => left
   | _, _, _, right, id one => right
 #align category_theory.limits.walking_parallel_pair_hom.comp CategoryTheory.Limits.WalkingParallelPairHom.comp
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairHomCategory /-
 instance walkingParallelPairHomCategory : SmallCategory WalkingParallelPair
     where
   Hom := WalkingParallelPairHom
   id := WalkingParallelPairHom.id
   comp := WalkingParallelPairHom.comp
 #align category_theory.limits.walking_parallel_pair_hom_category CategoryTheory.Limits.walkingParallelPairHomCategory
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairHom_id /-
 @[simp]
 theorem walkingParallelPairHom_id (X : WalkingParallelPair) : WalkingParallelPairHom.id X = 𝟙 X :=
   rfl
 #align category_theory.limits.walking_parallel_pair_hom_id CategoryTheory.Limits.walkingParallelPairHom_id
+-/
 
+#print CategoryTheory.Limits.walkingParallelPairOp /-
 /-- The functor `walking_parallel_pair ⥤ walking_parallel_pairᵒᵖ` sending left to left and right to
 right.
 -/
@@ -116,29 +127,60 @@ def walkingParallelPairOp : WalkingParallelPair ⥤ WalkingParallelPairᵒᵖ
     exacts[left, right, walking_parallel_pair_hom.id _]
   map_comp' := by rintro (_ | _) (_ | _) (_ | _) (_ | _ | _) (_ | _ | _) <;> rfl
 #align category_theory.limits.walking_parallel_pair_op CategoryTheory.Limits.walkingParallelPairOp
+-/
 
+/- warning: category_theory.limits.walking_parallel_pair_op_zero -> CategoryTheory.Limits.walkingParallelPairOp_zero is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one)
+but is expected to have type
+  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_zero CategoryTheory.Limits.walkingParallelPairOp_zeroₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_zero : walkingParallelPairOp.obj zero = op one :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_zero CategoryTheory.Limits.walkingParallelPairOp_zero
 
+/- warning: category_theory.limits.walking_parallel_pair_op_one -> CategoryTheory.Limits.walkingParallelPairOp_one is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.one) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)
+but is expected to have type
+  Eq.{1} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.one) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_one CategoryTheory.Limits.walkingParallelPairOp_oneₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_one : walkingParallelPairOp.obj one = op zero :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_one CategoryTheory.Limits.walkingParallelPairOp_one
 
+/- warning: category_theory.limits.walking_parallel_pair_op_left -> CategoryTheory.Limits.walkingParallelPairOp_left is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (Quiver.Hom.{1, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Functor.map.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Quiver.Hom.op.{0, 1} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left)
+but is expected to have type
+  Eq.{1} (Quiver.Hom.{1, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.one)) (Prefunctor.map.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Quiver.Hom.op.{0, 1} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_left CategoryTheory.Limits.walkingParallelPairOp_leftₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_left :
     walkingParallelPairOp.map left = @Quiver.Hom.op _ _ zero one left :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_left CategoryTheory.Limits.walkingParallelPairOp_left
 
+/- warning: category_theory.limits.walking_parallel_pair_op_right -> CategoryTheory.Limits.walkingParallelPairOp_right is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (Quiver.Hom.{1, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Functor.map.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) (Quiver.Hom.op.{0, 1} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)
+but is expected to have type
+  Eq.{1} (Quiver.Hom.{1, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.one)) (Prefunctor.map.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOp) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) (Quiver.Hom.op.{0, 1} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_right CategoryTheory.Limits.walkingParallelPairOp_rightₓ'. -/
 @[simp]
 theorem walkingParallelPairOp_right :
     walkingParallelPairOp.map right = @Quiver.Hom.op _ _ zero one right :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_right CategoryTheory.Limits.walkingParallelPairOp_right
 
+/- warning: category_theory.limits.walking_parallel_pair_op_equiv -> CategoryTheory.Limits.walkingParallelPairOpEquiv is a dubious translation:
+lean 3 declaration is
+  CategoryTheory.Equivalence.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)
+but is expected to have type
+  CategoryTheory.Equivalence.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv CategoryTheory.Limits.walkingParallelPairOpEquivₓ'. -/
 /--
 The equivalence `walking_parallel_pair ⥤ walking_parallel_pairᵒᵖ` sending left to left and right to
 right.
@@ -168,24 +210,48 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
       rcases i with (_ | _) <;> rcases j with (_ | _) <;> rcases g with (_ | _ | _) <;> rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv CategoryTheory.Limits.walkingParallelPairOpEquiv
 
+/- warning: category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_zero -> CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zero is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (CategoryTheory.Iso.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.app.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Equivalence.unitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Iso.refl.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair.zero)
+but is expected to have type
+  Eq.{1} (CategoryTheory.Iso.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv))) CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.app.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Equivalence.unitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Iso.refl.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair.zero)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zeroₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_unitIso_zero :
     walkingParallelPairOpEquiv.unitIso.app zero = Iso.refl zero :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_zero
 
+/- warning: category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_one -> CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_one is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (CategoryTheory.Iso.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Iso.app.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Equivalence.unitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Iso.refl.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair.one)
+but is expected to have type
+  Eq.{1} (CategoryTheory.Iso.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, 1, 0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv))) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Iso.app.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Functor.id.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Equivalence.unitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Iso.refl.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory CategoryTheory.Limits.WalkingParallelPair.one)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_oneₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_unitIso_one :
     walkingParallelPairOpEquiv.unitIso.app one = Iso.refl one :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_unit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_unitIso_one
 
+/- warning: category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero -> CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (CategoryTheory.Iso.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.obj.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Functor.obj.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))) (CategoryTheory.Iso.app.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Equivalence.counitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.refl.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))
+but is expected to have type
+  Eq.{1} (CategoryTheory.Iso.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Prefunctor.obj.{1, 1, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv))) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)) (Prefunctor.obj.{1, 1, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))) (CategoryTheory.Iso.app.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Equivalence.counitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Iso.refl.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.zero))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zeroₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_zero :
     walkingParallelPairOpEquiv.counitIso.app (op zero) = Iso.refl (op zero) :=
   rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_zero CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_zero
 
+/- warning: category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one -> CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_one is a dubious translation:
+lean 3 declaration is
+  Eq.{1} (CategoryTheory.Iso.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.obj.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Functor.obj.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one))) (CategoryTheory.Iso.app.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Equivalence.inverse.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Equivalence.counitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Iso.refl.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one))
+but is expected to have type
+  Eq.{1} (CategoryTheory.Iso.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Prefunctor.obj.{1, 1, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (CategoryTheory.Functor.comp.{0, 0, 0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} 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1, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.CategoryStruct.toQuiver.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.toCategoryStruct.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory))) (CategoryTheory.Functor.toPrefunctor.{0, 0, 0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} 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(CategoryTheory.Equivalence.functor.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv)) (CategoryTheory.Functor.id.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) (CategoryTheory.Equivalence.counitIso.{0, 0, 0, 0} CategoryTheory.Limits.WalkingParallelPair (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) CategoryTheory.Limits.walkingParallelPairHomCategory (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) CategoryTheory.Limits.walkingParallelPairOpEquiv) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Iso.refl.{0, 0} (Opposite.{1} CategoryTheory.Limits.WalkingParallelPair) (CategoryTheory.Category.opposite.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory) (Opposite.op.{1} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.WalkingParallelPair.one))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_oneₓ'. -/
 @[simp]
 theorem walkingParallelPairOpEquiv_counitIso_one :
     walkingParallelPairOpEquiv.counitIso.app (op one) = Iso.refl (op one) :=
@@ -196,6 +262,7 @@ variable {C : Type u} [Category.{v} C]
 
 variable {X Y : C}
 
+#print CategoryTheory.Limits.parallelPair /-
 /-- `parallel_pair f g` is the diagram in `C` consisting of the two morphisms `f` and `g` with
     common domain and codomain. -/
 def parallelPair (f g : X ⟶ Y) : WalkingParallelPair ⥤ C
@@ -215,32 +282,69 @@ def parallelPair (f g : X ⟶ Y) : WalkingParallelPair ⥤ C
       · unfold_aux
         simp <;> rfl
 #align category_theory.limits.parallel_pair CategoryTheory.Limits.parallelPair
+-/
 
+/- warning: category_theory.limits.parallel_pair_obj_zero -> CategoryTheory.Limits.parallelPair_obj_zero is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} (f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y) (g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y), Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.zero) X
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} (f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y) (g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y), Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) X
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_obj_zero CategoryTheory.Limits.parallelPair_obj_zeroₓ'. -/
 @[simp]
 theorem parallelPair_obj_zero (f g : X ⟶ Y) : (parallelPair f g).obj zero = X :=
   rfl
 #align category_theory.limits.parallel_pair_obj_zero CategoryTheory.Limits.parallelPair_obj_zero
 
+/- warning: category_theory.limits.parallel_pair_obj_one -> CategoryTheory.Limits.parallelPair_obj_one is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} (f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y) (g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y), Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) Y
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} (f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y) (g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y), Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) Y
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_obj_one CategoryTheory.Limits.parallelPair_obj_oneₓ'. -/
 @[simp]
 theorem parallelPair_obj_one (f g : X ⟶ Y) : (parallelPair f g).obj one = Y :=
   rfl
 #align category_theory.limits.parallel_pair_obj_one CategoryTheory.Limits.parallelPair_obj_one
 
+/- warning: category_theory.limits.parallel_pair_map_left -> CategoryTheory.Limits.parallelPair_map_left is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} (f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y) (g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) f
+but is expected to have type
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_map_left CategoryTheory.Limits.parallelPair_map_leftₓ'. -/
 @[simp]
 theorem parallelPair_map_left (f g : X ⟶ Y) : (parallelPair f g).map left = f :=
   rfl
 #align category_theory.limits.parallel_pair_map_left CategoryTheory.Limits.parallelPair_map_left
 
+/- warning: category_theory.limits.parallel_pair_map_right -> CategoryTheory.Limits.parallelPair_map_right is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} (f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y) (g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) g
+but is expected to have type
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_map_right CategoryTheory.Limits.parallelPair_map_rightₓ'. -/
 @[simp]
 theorem parallelPair_map_right (f g : X ⟶ Y) : (parallelPair f g).map right = g :=
   rfl
 #align category_theory.limits.parallel_pair_map_right CategoryTheory.Limits.parallelPair_map_right
 
+/- warning: category_theory.limits.parallel_pair_functor_obj -> CategoryTheory.Limits.parallelPair_functor_obj is a dubious translation:
+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.limits.parallel_pair_functor_obj CategoryTheory.Limits.parallelPair_functor_objₓ'. -/
 @[simp]
 theorem parallelPair_functor_obj {F : WalkingParallelPair ⥤ C} (j : WalkingParallelPair) :
     (parallelPair (F.map left) (F.map right)).obj j = F.obj j := by cases j <;> rfl
 #align category_theory.limits.parallel_pair_functor_obj CategoryTheory.Limits.parallelPair_functor_obj
 
+/- warning: category_theory.limits.diagram_iso_parallel_pair -> CategoryTheory.Limits.diagramIsoParallelPair is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] (F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1), CategoryTheory.Iso.{u1, max u1 u2} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) F (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))
+but is expected to have type
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.diagram_iso_parallel_pair CategoryTheory.Limits.diagramIsoParallelPairₓ'. -/
 /-- Every functor indexing a (co)equalizer is naturally isomorphic (actually, equal) to a
     `parallel_pair` -/
 @[simps]
@@ -249,6 +353,7 @@ def diagramIsoParallelPair (F : WalkingParallelPair ⥤ C) :
   (NatIso.ofComponents fun j => eqToIso <| by cases j <;> tidy) <| by tidy
 #align category_theory.limits.diagram_iso_parallel_pair CategoryTheory.Limits.diagramIsoParallelPair
 
+#print CategoryTheory.Limits.parallelPairHom /-
 /-- Construct a morphism between parallel pairs. -/
 def parallelPairHom {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X') (q : Y ⟶ Y')
     (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') : parallelPair f g ⟶ parallelPair f' g'
@@ -262,7 +367,14 @@ def parallelPairHom {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X
       · unfold_aux
         simp [wf, wg]
 #align category_theory.limits.parallel_pair_hom CategoryTheory.Limits.parallelPairHom
+-/
 
+/- warning: category_theory.limits.parallel_pair_hom_app_zero -> CategoryTheory.Limits.parallelPairHom_app_zero is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_hom_app_zero CategoryTheory.Limits.parallelPairHom_app_zeroₓ'. -/
 @[simp]
 theorem parallelPairHom_app_zero {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
     (q : Y ⟶ Y') (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') :
@@ -270,6 +382,12 @@ theorem parallelPairHom_app_zero {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y')
   rfl
 #align category_theory.limits.parallel_pair_hom_app_zero CategoryTheory.Limits.parallelPairHom_app_zero
 
+/- warning: category_theory.limits.parallel_pair_hom_app_one -> CategoryTheory.Limits.parallelPairHom_app_one is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair_hom_app_one CategoryTheory.Limits.parallelPairHom_app_oneₓ'. -/
 @[simp]
 theorem parallelPairHom_app_one {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y') (p : X ⟶ X')
     (q : Y ⟶ Y') (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') :
@@ -277,6 +395,12 @@ theorem parallelPairHom_app_one {X' Y' : C} (f g : X ⟶ Y) (f' g' : X' ⟶ Y')
   rfl
 #align category_theory.limits.parallel_pair_hom_app_one CategoryTheory.Limits.parallelPairHom_app_one
 
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CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.zero) zero) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left))) -> (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.one) one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.zero) zero) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) -> (CategoryTheory.Iso.{u1, max u1 u2} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) F G)
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} {G : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} (zero : CategoryTheory.Iso.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.zero)) (one : CategoryTheory.Iso.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one)), (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one) one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.zero) zero) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left))) -> (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right) (CategoryTheory.Iso.hom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.one) one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) 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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 G) CategoryTheory.Limits.WalkingParallelPair.zero) zero) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} 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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.extₓ'. -/
 /-- Construct a natural isomorphism between functors out of the walking parallel pair from
 its components. -/
 @[simps]
@@ -290,6 +414,7 @@ def parallelPair.ext {F G : WalkingParallelPair ⥤ C} (zero : F.obj zero ≅ G.
     (by rintro ⟨j₁⟩ ⟨j₂⟩ ⟨f⟩ <;> simp [left, right])
 #align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.ext
 
+#print CategoryTheory.Limits.parallelPair.eqOfHomEq /-
 /-- Construct a natural isomorphism between `parallel_pair f g` and `parallel_pair f' g'` given
 equalities `f = f'` and `g = g'`. -/
 @[simps]
@@ -297,19 +422,30 @@ def parallelPair.eqOfHomEq {f g f' g' : X ⟶ Y} (hf : f = f') (hg : g = g') :
     parallelPair f g ≅ parallelPair f' g' :=
   parallelPair.ext (Iso.refl _) (Iso.refl _) (by simp [hf]) (by simp [hg])
 #align category_theory.limits.parallel_pair.eq_of_hom_eq CategoryTheory.Limits.parallelPair.eqOfHomEq
+-/
 
+#print CategoryTheory.Limits.Fork /-
 /-- A fork on `f` and `g` is just a `cone (parallel_pair f g)`. -/
 abbrev Fork (f g : X ⟶ Y) :=
   Cone (parallelPair f g)
 #align category_theory.limits.fork CategoryTheory.Limits.Fork
+-/
 
+#print CategoryTheory.Limits.Cofork /-
 /-- A cofork on `f` and `g` is just a `cocone (parallel_pair f g)`. -/
 abbrev Cofork (f g : X ⟶ Y) :=
   Cocone (parallelPair f g)
 #align category_theory.limits.cofork CategoryTheory.Limits.Cofork
+-/
 
 variable {f g : X ⟶ Y}
 
+/- warning: category_theory.limits.fork.ι -> CategoryTheory.Limits.Fork.ι is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ι CategoryTheory.Limits.Fork.ιₓ'. -/
 /-- A fork `t` on the parallel pair `f g : X ⟶ Y` consists of two morphisms `t.π.app zero : t.X ⟶ X`
     and `t.π.app one : t.X ⟶ Y`. Of these, only the first one is interesting, and we give it the
     shorter name `fork.ι t`. -/
@@ -317,11 +453,23 @@ def Fork.ι (t : Fork f g) :=
   t.π.app zero
 #align category_theory.limits.fork.ι CategoryTheory.Limits.Fork.ι
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.app_zero_eq_ι CategoryTheory.Limits.Fork.app_zero_eq_ιₓ'. -/
 @[simp]
 theorem Fork.app_zero_eq_ι (t : Fork f g) : t.π.app zero = t.ι :=
   rfl
 #align category_theory.limits.fork.app_zero_eq_ι CategoryTheory.Limits.Fork.app_zero_eq_ι
 
+/- warning: category_theory.limits.cofork.π -> CategoryTheory.Limits.Cofork.π is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.π CategoryTheory.Limits.Cofork.πₓ'. -/
 /-- A cofork `t` on the parallel_pair `f g : X ⟶ Y` consists of two morphisms
     `t.ι.app zero : X ⟶ t.X` and `t.ι.app one : Y ⟶ t.X`. Of these, only the second one is
     interesting, and we give it the shorter name `cofork.π t`. -/
@@ -329,31 +477,62 @@ def Cofork.π (t : Cofork f g) :=
   t.ι.app one
 #align category_theory.limits.cofork.π CategoryTheory.Limits.Cofork.π
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.app_one_eq_π CategoryTheory.Limits.Cofork.app_one_eq_πₓ'. -/
 @[simp]
 theorem Cofork.app_one_eq_π (t : Cofork f g) : t.ι.app one = t.π :=
   rfl
 #align category_theory.limits.cofork.app_one_eq_π CategoryTheory.Limits.Cofork.app_one_eq_π
 
+/- warning: category_theory.limits.fork.app_one_eq_ι_comp_left -> CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left is a dubious translation:
+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.limits.fork.app_one_eq_ι_comp_left CategoryTheory.Limits.Fork.app_one_eq_ι_comp_leftₓ'. -/
 @[simp]
 theorem Fork.app_one_eq_ι_comp_left (s : Fork f g) : s.π.app one = s.ι ≫ f := by
   rw [← s.app_zero_eq_ι, ← s.w left, parallel_pair_map_left]
 #align category_theory.limits.fork.app_one_eq_ι_comp_left CategoryTheory.Limits.Fork.app_one_eq_ι_comp_left
 
+/- warning: category_theory.limits.fork.app_one_eq_ι_comp_right -> CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right is a dubious translation:
+lean 3 declaration is
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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) Y (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g s) g)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_rightₓ'. -/
 @[reassoc.1]
 theorem Fork.app_one_eq_ι_comp_right (s : Fork f g) : s.π.app one = s.ι ≫ g := by
   rw [← s.app_zero_eq_ι, ← s.w right, parallel_pair_map_right]
 #align category_theory.limits.fork.app_one_eq_ι_comp_right CategoryTheory.Limits.Fork.app_one_eq_ι_comp_right
 
+/- warning: category_theory.limits.cofork.app_zero_eq_comp_π_left -> CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_left is a dubious translation:
+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.limits.cofork.app_zero_eq_comp_π_left CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_leftₓ'. -/
 @[simp]
 theorem Cofork.app_zero_eq_comp_π_left (s : Cofork f g) : s.ι.app zero = f ≫ s.π := by
   rw [← s.app_one_eq_π, ← s.w left, parallel_pair_map_left]
 #align category_theory.limits.cofork.app_zero_eq_comp_π_left CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_left
 
+/- warning: category_theory.limits.cofork.app_zero_eq_comp_π_right -> CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_right is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.app_zero_eq_comp_π_right CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_rightₓ'. -/
 @[reassoc.1]
 theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g ≫ s.π := by
   rw [← s.app_one_eq_π, ← s.w right, parallel_pair_map_right]
 #align category_theory.limits.cofork.app_zero_eq_comp_π_right CategoryTheory.Limits.Cofork.app_zero_eq_comp_π_right
 
+#print CategoryTheory.Limits.Fork.ofι /-
 /-- A fork on `f g : X ⟶ Y` is determined by the morphism `ι : P ⟶ X` satisfying `ι ≫ f = ι ≫ g`.
 -/
 @[simps]
@@ -372,7 +551,9 @@ def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g
         · dsimp
           simp }
 #align category_theory.limits.fork.of_ι CategoryTheory.Limits.Fork.ofι
+-/
 
+#print CategoryTheory.Limits.Cofork.ofπ /-
 /-- A cofork on `f g : X ⟶ Y` is determined by the morphism `π : Y ⟶ P` satisfying
     `f ≫ π = g ≫ π`. -/
 @[simps]
@@ -383,28 +564,59 @@ def Cofork.ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : Cofork f g
     { app := fun X => WalkingParallelPair.casesOn X (f ≫ π) π
       naturality' := fun i j f => by cases f <;> dsimp <;> simp [w] }
 #align category_theory.limits.cofork.of_π CategoryTheory.Limits.Cofork.ofπ
+-/
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ι_of_ι CategoryTheory.Limits.Fork.ι_ofιₓ'. -/
 -- See note [dsimp, simp]
 @[simp]
 theorem Fork.ι_ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : (Fork.ofι ι w).ι = ι :=
   rfl
 #align category_theory.limits.fork.ι_of_ι CategoryTheory.Limits.Fork.ι_ofι
 
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 @[simp]
 theorem Cofork.π_ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : (Cofork.ofπ π w).π = π :=
   rfl
 #align category_theory.limits.cofork.π_of_π CategoryTheory.Limits.Cofork.π_ofπ
 
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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) Y (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g t) g)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.conditionₓ'. -/
 @[simp, reassoc.1]
 theorem Fork.condition (t : Fork f g) : t.ι ≫ f = t.ι ≫ g := by
   rw [← t.app_one_eq_ι_comp_left, ← t.app_one_eq_ι_comp_right]
 #align category_theory.limits.fork.condition CategoryTheory.Limits.Fork.condition
 
+/- warning: category_theory.limits.cofork.condition -> CategoryTheory.Limits.Cofork.condition is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.conditionₓ'. -/
 @[simp, reassoc.1]
 theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
   rw [← t.app_zero_eq_comp_π_left, ← t.app_zero_eq_comp_π_right]
 #align category_theory.limits.cofork.condition CategoryTheory.Limits.Cofork.condition
 
+/- warning: category_theory.limits.fork.equalizer_ext -> CategoryTheory.Limits.Fork.equalizer_ext is a dubious translation:
+lean 3 declaration is
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+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (s : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g) {W : C} {k : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) W (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)} {l : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) W 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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) l (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g s))) -> (forall (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) W (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) 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s)) (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) (CategoryTheory.Limits.Cone.π.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) j)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) W (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C 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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_extₓ'. -/
 /-- To check whether two maps are equalized by both maps of a fork, it suffices to check it for the
     first map -/
 theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫ s.ι = l ≫ s.ι) :
@@ -413,6 +625,12 @@ theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫
   | one => by rw [s.app_one_eq_ι_comp_left, reassoc_of h]
 #align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_ext
 
+/- warning: category_theory.limits.cofork.coequalizer_ext -> CategoryTheory.Limits.Cofork.coequalizer_ext is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g) {W : C} {k : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) W} {l : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) 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CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) CategoryTheory.Limits.WalkingParallelPair.one) W (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s) k) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} 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+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g) {W : C} {k : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) W} {l : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) 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(CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) W) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.one) W (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s) k) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 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_inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} 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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.coequalizer_ext CategoryTheory.Limits.Cofork.coequalizer_extₓ'. -/
 /-- To check whether two maps are coequalized by both maps of a cofork, it suffices to check it for
     the second map -/
 theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.pt ⟶ W}
@@ -421,26 +639,56 @@ theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.pt ⟶ W}
   | one => h
 #align category_theory.limits.cofork.coequalizer_ext CategoryTheory.Limits.Cofork.coequalizer_ext
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.hom_ext CategoryTheory.Limits.Fork.IsLimit.hom_extₓ'. -/
 theorem Fork.IsLimit.hom_ext {s : Fork f g} (hs : IsLimit s) {W : C} {k l : W ⟶ s.pt}
     (h : k ≫ Fork.ι s = l ≫ Fork.ι s) : k = l :=
   hs.hom_ext <| Fork.equalizer_ext _ h
 #align category_theory.limits.fork.is_limit.hom_ext CategoryTheory.Limits.Fork.IsLimit.hom_ext
 
+/- warning: category_theory.limits.cofork.is_colimit.hom_ext -> CategoryTheory.Limits.Cofork.IsColimit.hom_ext is a dubious translation:
+lean 3 declaration is
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+but is expected to have type
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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) W) k l))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_ext CategoryTheory.Limits.Cofork.IsColimit.hom_extₓ'. -/
 theorem Cofork.IsColimit.hom_ext {s : Cofork f g} (hs : IsColimit s) {W : C} {k l : s.pt ⟶ W}
     (h : Cofork.π s ≫ k = Cofork.π s ≫ l) : k = l :=
   hs.hom_ext <| Cofork.coequalizer_ext _ h
 #align category_theory.limits.cofork.is_colimit.hom_ext CategoryTheory.Limits.Cofork.IsColimit.hom_ext
 
+/- warning: category_theory.limits.fork.is_limit.lift_ι -> CategoryTheory.Limits.Fork.IsLimit.lift_ι is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.lift_ι CategoryTheory.Limits.Fork.IsLimit.lift_ιₓ'. -/
 @[simp, reassoc.1]
 theorem Fork.IsLimit.lift_ι {s t : Fork f g} (hs : IsLimit s) : hs.lift t ≫ s.ι = t.ι :=
   hs.fac _ _
 #align category_theory.limits.fork.is_limit.lift_ι CategoryTheory.Limits.Fork.IsLimit.lift_ι
 
+/- warning: category_theory.limits.cofork.is_colimit.π_desc -> CategoryTheory.Limits.Cofork.IsColimit.π_desc is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_descₓ'. -/
 @[simp, reassoc.1]
 theorem Cofork.IsColimit.π_desc {s t : Cofork f g} (hs : IsColimit s) : s.π ≫ hs.desc t = t.π :=
   hs.fac _ _
 #align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_desc
 
+/- warning: category_theory.limits.fork.is_limit.lift' -> CategoryTheory.Limits.Fork.IsLimit.lift' is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'ₓ'. -/
 /-- If `s` is a limit fork over `f` and `g`, then a morphism `k : W ⟶ X` satisfying
     `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ s.X` such that `l ≫ fork.ι s = k`. -/
 def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
@@ -448,6 +696,12 @@ def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _⟩
 #align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'
 
+/- warning: category_theory.limits.cofork.is_colimit.desc' -> CategoryTheory.Limits.Cofork.IsColimit.desc' is a dubious translation:
+lean 3 declaration is
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X Y f g s) l) k)))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'ₓ'. -/
 /-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
     `f ≫ k = g ≫ k` induces a morphism `l : s.X ⟶ W` such that `cofork.π s ≫ l = k`. -/
 def Cofork.IsColimit.desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
@@ -455,18 +709,36 @@ def Cofork.IsColimit.desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y 
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _⟩
 #align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'
 
+/- warning: category_theory.limits.fork.is_limit.exists_unique -> CategoryTheory.Limits.Fork.IsLimit.existsUnique is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.exists_unique CategoryTheory.Limits.Fork.IsLimit.existsUniqueₓ'. -/
 theorem Fork.IsLimit.existsUnique {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X)
     (h : k ≫ f = k ≫ g) : ∃! l : W ⟶ s.pt, l ≫ Fork.ι s = k :=
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _, fun m hm =>
     Fork.IsLimit.hom_ext hs <| hm.symm ▸ (hs.fac (Fork.ofι _ h) WalkingParallelPair.zero).symm⟩
 #align category_theory.limits.fork.is_limit.exists_unique CategoryTheory.Limits.Fork.IsLimit.existsUnique
 
+/- warning: category_theory.limits.cofork.is_colimit.exists_unique -> CategoryTheory.Limits.Cofork.IsColimit.existsUnique is a dubious translation:
+lean 3 declaration is
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X Y f g s) d) k)))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUniqueₓ'. -/
 theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
     (h : f ≫ k = g ≫ k) : ∃! d : s.pt ⟶ W, Cofork.π s ≫ d = k :=
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _, fun m hm =>
     Cofork.IsColimit.hom_ext hs <| hm.symm ▸ (hs.fac (Cofork.ofπ _ h) WalkingParallelPair.one).symm⟩
 #align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUnique
 
+/- warning: category_theory.limits.fork.is_limit.mk -> CategoryTheory.Limits.Fork.IsLimit.mk is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mkₓ'. -/
 /-- This is a slightly more convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content -/
 @[simps lift]
@@ -480,6 +752,12 @@ def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.pt ⟶ t.pt)
     uniq := fun s m j => by tidy }
 #align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mk
 
+/- warning: category_theory.limits.fork.is_limit.mk' -> CategoryTheory.Limits.Fork.IsLimit.mk' is a dubious translation:
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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) CategoryTheory.Limits.WalkingParallelPair.zero)) m l)))) -> (CategoryTheory.Limits.IsLimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (t : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g), (forall (s : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g), Subtype.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C 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(CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) 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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.zero) m (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g t)) 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.zero)) m l)))) -> (CategoryTheory.Limits.IsLimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.mk' CategoryTheory.Limits.Fork.IsLimit.mk'ₓ'. -/
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
@@ -488,6 +766,12 @@ def Fork.IsLimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Fork f g)
   Fork.IsLimit.mk t (fun s => (create s).1) (fun s => (create s).2.1) fun s m w => (create s).2.2 w
 #align category_theory.limits.fork.is_limit.mk' CategoryTheory.Limits.Fork.IsLimit.mk'
 
+/- warning: category_theory.limits.cofork.is_colimit.mk -> CategoryTheory.Limits.Cofork.IsColimit.mk is a dubious translation:
+lean 3 declaration is
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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)), (forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) (desc s)) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s)) -> (forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g) (m : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)), (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) m) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s)) -> (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) m (desc s))) -> (CategoryTheory.Limits.IsColimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g) (desc : forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)), (forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) (desc s)) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s)) -> (forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g) (m : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)), (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) m) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s)) -> (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) m (desc s))) -> (CategoryTheory.Limits.IsColimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mkₓ'. -/
 /-- This is a slightly more convenient method to verify that a cofork is a colimit cocone. It
     only asks for a proof of facts that carry any mathematical content -/
 def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.pt)
@@ -500,6 +784,12 @@ def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.
     uniq := by tidy }
 #align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mk
 
+/- warning: category_theory.limits.cofork.is_colimit.mk' -> CategoryTheory.Limits.Cofork.IsColimit.mk' is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), (forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), Subtype.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (fun (l : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) => And (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) l) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s)) (forall {m : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) CategoryTheory.Limits.WalkingParallelPair.one)}, (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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(CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) CategoryTheory.Limits.WalkingParallelPair.one)) m l)))) -> (CategoryTheory.Limits.IsColimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} (t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), (forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), Subtype.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.one)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} 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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) m) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s)) -> (Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t))) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s))) CategoryTheory.Limits.WalkingParallelPair.one)) m l)))) -> (CategoryTheory.Limits.IsColimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.mk' CategoryTheory.Limits.Cofork.IsColimit.mk'ₓ'. -/
 /-- This is another convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
@@ -511,6 +801,12 @@ def Cofork.IsColimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Cofork f g)
     (create s).2.2 w
 #align category_theory.limits.cofork.is_colimit.mk' CategoryTheory.Limits.Cofork.IsColimit.mk'
 
+/- warning: category_theory.limits.fork.is_limit.of_exists_unique -> CategoryTheory.Limits.Fork.IsLimit.ofExistsUnique is a dubious translation:
+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.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUniqueₓ'. -/
 /-- Noncomputably make a limit cone from the existence of unique factorizations. -/
 def Fork.IsLimit.ofExistsUnique {t : Fork f g}
     (hs : ∀ s : Fork f g, ∃! l : s.pt ⟶ t.pt, l ≫ Fork.ι t = Fork.ι s) : IsLimit t :=
@@ -519,6 +815,12 @@ def Fork.IsLimit.ofExistsUnique {t : Fork f g}
   exact fork.is_limit.mk _ d hd fun s m hm => hd' _ _ hm
 #align category_theory.limits.fork.is_limit.of_exists_unique CategoryTheory.Limits.Fork.IsLimit.ofExistsUnique
 
+/- warning: category_theory.limits.cofork.is_colimit.of_exists_unique -> CategoryTheory.Limits.Cofork.IsColimit.ofExistsUnique is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g}, (forall (s : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 X Y f g), ExistsUnique.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (fun (d : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) => Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) d) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s))) -> (CategoryTheory.Limits.IsColimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+but is expected to have type
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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) (fun (d : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s)) => Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) s) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g t) d) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g s))) -> (CategoryTheory.Limits.IsColimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) t)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.of_exists_unique CategoryTheory.Limits.Cofork.IsColimit.ofExistsUniqueₓ'. -/
 /-- Noncomputably make a colimit cocone from the existence of unique factorizations. -/
 def Cofork.IsColimit.ofExistsUnique {t : Cofork f g}
     (hs : ∀ s : Cofork f g, ∃! d : t.pt ⟶ s.pt, Cofork.π t ≫ d = Cofork.π s) : IsColimit t :=
@@ -527,6 +829,7 @@ def Cofork.IsColimit.ofExistsUnique {t : Cofork f g}
   exact cofork.is_colimit.mk _ d hd fun s m hm => hd' _ _ hm
 #align category_theory.limits.cofork.is_colimit.of_exists_unique CategoryTheory.Limits.Cofork.IsColimit.ofExistsUnique
 
+#print CategoryTheory.Limits.Fork.IsLimit.homIso /-
 /--
 Given a limit cone for the pair `f g : X ⟶ Y`, for any `Z`, morphisms from `Z` to its point are in
 bijection with morphisms `h : Z ⟶ X` such that `h ≫ f = h ≫ g`.
@@ -542,7 +845,14 @@ def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t
   left_inv k := Fork.IsLimit.hom_ext ht (Fork.IsLimit.lift' _ _ _).Prop
   right_inv h := Subtype.ext (Fork.IsLimit.lift' ht _ _).Prop
 #align category_theory.limits.fork.is_limit.hom_iso CategoryTheory.Limits.Fork.IsLimit.homIso
+-/
 
+/- warning: category_theory.limits.fork.is_limit.hom_iso_natural -> CategoryTheory.Limits.Fork.IsLimit.homIso_natural is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_naturalₓ'. -/
 /-- The bijection of `fork.is_limit.hom_iso` is natural in `Z`. -/
 theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t)
     {Z Z' : C} (q : Z' ⟶ Z) (k : Z ⟶ t.pt) :
@@ -550,6 +860,7 @@ theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht
   Category.assoc _ _ _
 #align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_natural
 
+#print CategoryTheory.Limits.Cofork.IsColimit.homIso /-
 /-- Given a colimit cocone for the pair `f g : X ⟶ Y`, for any `Z`, morphisms from the cocone point
 to `Z` are in bijection with morphisms `h : Y ⟶ Z` such that `f ≫ h = g ≫ h`.
 Further, this bijection is natural in `Z`: see `cofork.is_colimit.hom_iso_natural`.
@@ -564,7 +875,14 @@ def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsC
   left_inv k := Cofork.IsColimit.hom_ext ht (Cofork.IsColimit.desc' _ _ _).Prop
   right_inv h := Subtype.ext (Cofork.IsColimit.desc' ht _ _).Prop
 #align category_theory.limits.cofork.is_colimit.hom_iso CategoryTheory.Limits.Cofork.IsColimit.homIso
+-/
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_naturalₓ'. -/
 /-- The bijection of `cofork.is_colimit.hom_iso` is natural in `Z`. -/
 theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} {Z Z' : C}
     (q : Z ⟶ Z') (ht : IsColimit t) (k : t.pt ⟶ Z) :
@@ -573,6 +891,12 @@ theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f
   (Category.assoc _ _ _).symm
 #align category_theory.limits.cofork.is_colimit.hom_iso_natural CategoryTheory.Limits.Cofork.IsColimit.homIso_natural
 
+/- warning: category_theory.limits.cone.of_fork -> CategoryTheory.Limits.Cone.ofFork is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cone.of_fork CategoryTheory.Limits.Cone.ofForkₓ'. -/
 /-- This is a helper construction that can be useful when verifying that a category has all
     equalizers. Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)`, and a fork on `F.map left` and `F.map right`,
@@ -588,6 +912,12 @@ def Cone.ofFork {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map ri
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
 #align category_theory.limits.cone.of_fork CategoryTheory.Limits.Cone.ofFork
 
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+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1}, (CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) -> (CategoryTheory.Limits.Cocone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F)
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1}, (CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) -> (CategoryTheory.Limits.Cocone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cocone.of_cofork CategoryTheory.Limits.Cocone.ofCoforkₓ'. -/
 /-- This is a helper construction that can be useful when verifying that a category has all
     coequalizers. Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)`, and a cofork on `F.map left` and `F.map right`,
@@ -604,18 +934,36 @@ def Cocone.ofCofork {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
 #align category_theory.limits.cocone.of_cofork CategoryTheory.Limits.Cocone.ofCofork
 
+/- warning: category_theory.limits.cone.of_fork_π -> CategoryTheory.Limits.Cone.ofFork_π is a dubious translation:
+lean 3 declaration is
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u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) 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0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True ((fun (a : C) (a_1 : C) (e_1 : Eq.{succ u2} C a a_1) (ᾰ : C) (ᾰ_1 : C) (e_2 : Eq.{succ u2} C ᾰ ᾰ_1) => congr.{succ u2, 1} C Prop (Eq.{succ u2} C a) (Eq.{succ u2} C a_1) ᾰ ᾰ_1 (congr_arg.{succ u2, succ u2} C (C -> Prop) a a_1 (Eq.{succ u2} C) e_1) e_2) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (rfl.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j))) (propext (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True (eq_self_iff_true.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j))))) trivial)))
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} (t : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Limits.Cone.ofFork.{u1, u2} C _inst_1 F t)))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Limits.Cone.ofFork.{u1, u2} C _inst_1 F t))) F (CategoryTheory.Limits.Cone.π.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Limits.Cone.ofFork.{u1, u2} C _inst_1 F t)) j) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C 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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (of_eq_true (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} 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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cone.of_fork_π CategoryTheory.Limits.Cone.ofFork_πₓ'. -/
 @[simp]
 theorem Cone.ofFork_π {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map right)) (j) :
     (Cone.ofFork t).π.app j = t.π.app j ≫ eqToHom (by tidy) :=
   rfl
 #align category_theory.limits.cone.of_fork_π CategoryTheory.Limits.Cone.ofFork_π
 
+/- warning: category_theory.limits.cocone.of_cofork_ι -> CategoryTheory.Limits.Cocone.ofCofork_ι is a dubious translation:
+lean 3 declaration is
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u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j)) True) (Eq.trans.{1} Prop (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j)) (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True ((fun (a : C) (a_1 : C) (e_1 : Eq.{succ u2} C a a_1) (ᾰ : C) (ᾰ_1 : C) (e_2 : Eq.{succ u2} C ᾰ ᾰ_1) => congr.{succ u2, 1} C Prop (Eq.{succ u2} C a) (Eq.{succ u2} C a_1) ᾰ ᾰ_1 (congr_arg.{succ u2, succ u2} C (C -> Prop) a a_1 (Eq.{succ u2} C) e_1) e_2) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (rfl.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j)) (propext (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True (eq_self_iff_true.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j))))) trivial)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t)) (CategoryTheory.Limits.Cocone.ι.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t) j))
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} (t : CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Limits.Cocone.ofCofork.{u1, u2} C _inst_1 F t)))) j)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Limits.Cocone.ofCofork.{u1, u2} C _inst_1 F t))) (CategoryTheory.Limits.Cocone.ι.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Limits.Cocone.ofCofork.{u1, u2} C _inst_1 F t)) j) (CategoryTheory.CategoryStruct.comp.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t))) j) (CategoryTheory.eqToHom.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (of_eq_true (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j)) (Eq.trans.{1} Prop (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} 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(CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j)) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j)) (eq_self.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j))))) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t)) (CategoryTheory.Limits.Cocone.ι.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) t) j))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cocone.of_cofork_ι CategoryTheory.Limits.Cocone.ofCofork_ιₓ'. -/
 @[simp]
 theorem Cocone.ofCofork_ι {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.map right))
     (j) : (Cocone.ofCofork t).ι.app j = eqToHom (by tidy) ≫ t.ι.app j :=
   rfl
 #align category_theory.limits.cocone.of_cofork_ι CategoryTheory.Limits.Cocone.ofCofork_ι
 
+/- warning: category_theory.limits.fork.of_cone -> CategoryTheory.Limits.Fork.ofCone is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1}, (CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) -> (CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1}, (CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) -> (CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.of_cone CategoryTheory.Limits.Fork.ofConeₓ'. -/
 /-- Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)` and a cone on `F`, we get a fork on
     `F.map left` and `F.map right`. -/
@@ -625,6 +973,12 @@ def Fork.ofCone {F : WalkingParallelPair ⥤ C} (t : Cone F) : Fork (F.map left)
   π := { app := fun X => t.π.app X ≫ eqToHom (by tidy) }
 #align category_theory.limits.fork.of_cone CategoryTheory.Limits.Fork.ofCone
 
+/- warning: category_theory.limits.cofork.of_cocone -> CategoryTheory.Limits.Cofork.ofCocone is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1}, (CategoryTheory.Limits.Cocone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) -> (CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1}, (CategoryTheory.Limits.Cocone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) -> (CategoryTheory.Limits.Cofork.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.of_cocone CategoryTheory.Limits.Cofork.ofCoconeₓ'. -/
 /-- Given `F : walking_parallel_pair ⥤ C`, which is really the same as
     `parallel_pair (F.map left) (F.map right)` and a cocone on `F`, we get a cofork on
     `F.map left` and `F.map right`. -/
@@ -634,30 +988,60 @@ def Cofork.ofCocone {F : WalkingParallelPair ⥤ C} (t : Cocone F) : Cofork (F.m
   ι := { app := fun X => eqToHom (by tidy) ≫ t.ι.app X }
 #align category_theory.limits.cofork.of_cocone CategoryTheory.Limits.Cofork.ofCocone
 
+/- warning: category_theory.limits.fork.of_cone_π -> CategoryTheory.Limits.Fork.ofCone_π is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} (t : CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} 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_inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (CategoryTheory.Limits.Fork.ofCone.{u1, u2} C _inst_1 F t))) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j)) True) (Eq.trans.{1} Prop (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j)) (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True ((fun (a : C) (a_1 : C) (e_1 : Eq.{succ u2} C a a_1) (ᾰ : C) (ᾰ_1 : C) (e_2 : Eq.{succ u2} C ᾰ ᾰ_1) => congr.{succ u2, 1} C Prop (Eq.{succ u2} C a) (Eq.{succ u2} C a_1) ᾰ ᾰ_1 (congr_arg.{succ u2, succ u2} C (C -> Prop) a a_1 (Eq.{succ u2} C) e_1) e_2) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (rfl.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j)) (propext (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True (eq_self_iff_true.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j))))) trivial)))
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} (t : CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (CategoryTheory.Limits.Fork.ofCone.{u1, u2} C _inst_1 F t)))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (CategoryTheory.Limits.Fork.ofCone.{u1, u2} C _inst_1 F t))) (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} 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(CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j)) (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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(CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j) (Eq.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j)) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j)) (eq_self.{succ u2} C (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j))))))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.of_cone_π CategoryTheory.Limits.Fork.ofCone_πₓ'. -/
 @[simp]
 theorem Fork.ofCone_π {F : WalkingParallelPair ⥤ C} (t : Cone F) (j) :
     (Fork.ofCone t).π.app j = t.π.app j ≫ eqToHom (by tidy) :=
   rfl
 #align category_theory.limits.fork.of_cone_π CategoryTheory.Limits.Fork.ofCone_π
 
+/- warning: category_theory.limits.cofork.of_cocone_ι -> CategoryTheory.Limits.Cofork.ofCocone_ι is a dubious translation:
+lean 3 declaration is
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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True (id_tag Tactic.IdTag.simp (Eq.{1} Prop (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True) (Eq.trans.{1} Prop (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True ((fun (a : C) (a_1 : C) (e_1 : Eq.{succ u2} C a a_1) (ᾰ : C) (ᾰ_1 : C) (e_2 : Eq.{succ u2} C ᾰ ᾰ_1) => congr.{succ u2, 1} C Prop (Eq.{succ u2} C a) (Eq.{succ u2} C a_1) ᾰ ᾰ_1 (congr_arg.{succ u2, succ u2} C (C -> Prop) a a_1 (Eq.{succ u2} C) e_1) e_2) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (CategoryTheory.Functor.map.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Limits.parallelPair_functor_obj.{u1, u2} C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (rfl.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j))) (propext (Eq.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j)) True (eq_self_iff_true.{succ u2} C (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F j))))) trivial)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F t)) (CategoryTheory.Limits.Cocone.ι.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F t) j))
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {F : CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1} (t : CategoryTheory.Limits.Cocone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) (j : CategoryTheory.Limits.WalkingParallelPair), Eq.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right))) j) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.one) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.left) (Prefunctor.map.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero CategoryTheory.Limits.WalkingParallelPair.one CategoryTheory.Limits.WalkingParallelPairHom.right)) (CategoryTheory.Limits.Cofork.ofCocone.{u1, u2} C _inst_1 F t)))) j)) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.CategoryStruct.toQuiver.{0, 0} CategoryTheory.Limits.WalkingParallelPair (CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) CategoryTheory.Limits.WalkingParallelPair.zero) (Prefunctor.obj.{1, succ u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair 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CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F) j))))) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 F (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) 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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.of_cocone_ι CategoryTheory.Limits.Cofork.ofCocone_ιₓ'. -/
 @[simp]
 theorem Cofork.ofCocone_ι {F : WalkingParallelPair ⥤ C} (t : Cocone F) (j) :
     (Cofork.ofCocone t).ι.app j = eqToHom (by tidy) ≫ t.ι.app j :=
   rfl
 #align category_theory.limits.cofork.of_cocone_ι CategoryTheory.Limits.Cofork.ofCocone_ι
 
+/- warning: category_theory.limits.fork.ι_postcompose -> CategoryTheory.Limits.Fork.ι_postcompose is a dubious translation:
+lean 3 declaration is
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max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g') (CategoryTheory.Functor.obj.{u1, u1, max u2 u1, max u2 u1} (CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) (CategoryTheory.Limits.Cone.category.{0, 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u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g') CategoryTheory.Limits.WalkingParallelPair.zero)) (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f' g' (CategoryTheory.Functor.obj.{u1, u1, max u2 u1, max u2 u1} (CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) (CategoryTheory.Limits.Cone.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)) (CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g')) 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_inst_1 X Y f g)) (CategoryTheory.Limits.Cone.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g')) (CategoryTheory.Limits.Cone.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g')) (CategoryTheory.Limits.Cones.postcompose.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g') α) c))) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g') CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g c) (CategoryTheory.NatTrans.app.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f' g') α CategoryTheory.Limits.WalkingParallelPair.zero))
+but is expected to have type
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {f' : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g' : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {α : Quiver.Hom.{succ u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} 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(CategoryTheory.Category.toCategoryStruct.{0, 0} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory)) C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.toPrefunctor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} 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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ι_postcompose CategoryTheory.Limits.Fork.ι_postcomposeₓ'. -/
 @[simp]
 theorem Fork.ι_postcompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
     {c : Fork f g} : Fork.ι ((Cones.postcompose α).obj c) = c.ι ≫ α.app _ :=
   rfl
 #align category_theory.limits.fork.ι_postcompose CategoryTheory.Limits.Fork.ι_postcompose
 
+/- warning: category_theory.limits.cofork.π_precompose -> CategoryTheory.Limits.Cofork.π_precompose is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.π_precompose CategoryTheory.Limits.Cofork.π_precomposeₓ'. -/
 @[simp]
 theorem Cofork.π_precompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parallelPair f' g'}
     {c : Cofork f' g'} : Cofork.π ((Cocones.precompose α).obj c) = α.app _ ≫ c.π :=
   rfl
 #align category_theory.limits.cofork.π_precompose CategoryTheory.Limits.Cofork.π_precompose
 
+/- warning: category_theory.limits.fork.mk_hom -> CategoryTheory.Limits.Fork.mkHom is a dubious translation:
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+but is expected to have type
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.mk_hom CategoryTheory.Limits.Fork.mkHomₓ'. -/
 /-- Helper function for constructing morphisms between equalizer forks.
 -/
 @[simps]
@@ -670,6 +1054,12 @@ def Fork.mkHom {s t : Fork f g} (k : s.pt ⟶ t.pt) (w : k ≫ t.ι = s.ι) : s
     · simp only [fork.app_one_eq_ι_comp_left, reassoc_of w]
 #align category_theory.limits.fork.mk_hom CategoryTheory.Limits.Fork.mkHom
 
+/- warning: category_theory.limits.fork.ext -> CategoryTheory.Limits.Fork.ext is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.ext CategoryTheory.Limits.Fork.extₓ'. -/
 /-- To construct an isomorphism between forks,
 it suffices to give an isomorphism between the cone points
 and check that it commutes with the `ι` morphisms.
@@ -681,11 +1071,23 @@ def Fork.ext {s t : Fork f g} (i : s.pt ≅ t.pt) (w : i.Hom ≫ t.ι = s.ι) :
   inv := Fork.mkHom i.inv (by rw [← w, iso.inv_hom_id_assoc])
 #align category_theory.limits.fork.ext CategoryTheory.Limits.Fork.ext
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.iso_fork_of_ι CategoryTheory.Limits.Fork.isoForkOfιₓ'. -/
 /-- Every fork is isomorphic to one of the form `fork.of_ι _ _`. -/
 def Fork.isoForkOfι (c : Fork f g) : c ≅ Fork.ofι c.ι c.condition :=
   Fork.ext (by simp only [fork.of_ι_X, functor.const_obj_obj]) (by simp)
 #align category_theory.limits.fork.iso_fork_of_ι CategoryTheory.Limits.Fork.isoForkOfι
 
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f g) (CategoryTheory.Limits.Cocone.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g)))) s t)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.mk_hom CategoryTheory.Limits.Cofork.mkHomₓ'. -/
 /-- Helper function for constructing morphisms between coequalizer coforks.
 -/
 @[simps]
@@ -698,14 +1100,32 @@ def Cofork.mkHom {s t : Cofork f g} (k : s.pt ⟶ t.pt) (w : s.π ≫ k = t.π)
     · exact w
 #align category_theory.limits.cofork.mk_hom CategoryTheory.Limits.Cofork.mkHom
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ιₓ'. -/
 @[simp, reassoc.1]
 theorem Fork.hom_comp_ι {s t : Fork f g} (f : s ⟶ t) : f.Hom ≫ t.ι = s.ι := by tidy
 #align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ι
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_homₓ'. -/
 @[simp, reassoc.1]
 theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.π := by tidy
 #align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_hom
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.ext CategoryTheory.Limits.Cofork.extₓ'. -/
 /-- To construct an isomorphism between coforks,
 it suffices to give an isomorphism between the cocone points
 and check that it commutes with the `π` morphisms.
@@ -717,6 +1137,12 @@ def Cofork.ext {s t : Cofork f g} (i : s.pt ≅ t.pt) (w : s.π ≫ i.Hom = t.π
   inv := Cofork.mkHom i.inv (by rw [iso.comp_inv_eq, w])
 #align category_theory.limits.cofork.ext CategoryTheory.Limits.Cofork.ext
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cofork.iso_cofork_of_π CategoryTheory.Limits.Cofork.isoCoforkOfπₓ'. -/
 /-- Every cofork is isomorphic to one of the form `cofork.of_π _ _`. -/
 def Cofork.isoCoforkOfπ (c : Cofork f g) : c ≅ Cofork.ofπ c.π c.condition :=
   Cofork.ext (by simp only [cofork.of_π_X, functor.const_obj_obj]) (by dsimp <;> simp)
@@ -726,74 +1152,105 @@ variable (f g)
 
 section
 
+#print CategoryTheory.Limits.HasEqualizer /-
 /-- `has_equalizer f g` represents a particular choice of limiting cone
 for the parallel pair of morphisms `f` and `g`.
 -/
 abbrev HasEqualizer :=
   HasLimit (parallelPair f g)
 #align category_theory.limits.has_equalizer CategoryTheory.Limits.HasEqualizer
+-/
 
 variable [HasEqualizer f g]
 
+#print CategoryTheory.Limits.equalizer /-
 /-- If an equalizer of `f` and `g` exists, we can access an arbitrary choice of such by
     saying `equalizer f g`. -/
 abbrev equalizer : C :=
   limit (parallelPair f g)
 #align category_theory.limits.equalizer CategoryTheory.Limits.equalizer
+-/
 
+#print CategoryTheory.Limits.equalizer.ι /-
 /-- If an equalizer of `f` and `g` exists, we can access the inclusion
     `equalizer f g ⟶ X` by saying `equalizer.ι f g`. -/
 abbrev equalizer.ι : equalizer f g ⟶ X :=
   limit.π (parallelPair f g) zero
 #align category_theory.limits.equalizer.ι CategoryTheory.Limits.equalizer.ι
+-/
 
+#print CategoryTheory.Limits.equalizer.fork /-
 /-- An equalizer cone for a parallel pair `f` and `g`.
 -/
 abbrev equalizer.fork : Fork f g :=
   limit.cone (parallelPair f g)
 #align category_theory.limits.equalizer.fork CategoryTheory.Limits.equalizer.fork
+-/
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.equalizer.fork_ι CategoryTheory.Limits.equalizer.fork_ιₓ'. -/
 @[simp]
 theorem equalizer.fork_ι : (equalizer.fork f g).ι = equalizer.ι f g :=
   rfl
 #align category_theory.limits.equalizer.fork_ι CategoryTheory.Limits.equalizer.fork_ι
 
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_inst_1 X Y f g _inst_2)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.equalizer.fork_π_app_zero CategoryTheory.Limits.equalizer.fork_π_app_zeroₓ'. -/
 @[simp]
 theorem equalizer.fork_π_app_zero : (equalizer.fork f g).π.app zero = equalizer.ι f g :=
   rfl
 #align category_theory.limits.equalizer.fork_π_app_zero CategoryTheory.Limits.equalizer.fork_π_app_zero
 
+#print CategoryTheory.Limits.equalizer.condition /-
 @[reassoc.1]
 theorem equalizer.condition : equalizer.ι f g ≫ f = equalizer.ι f g ≫ g :=
   Fork.condition <| limit.cone <| parallelPair f g
 #align category_theory.limits.equalizer.condition CategoryTheory.Limits.equalizer.condition
+-/
 
+#print CategoryTheory.Limits.equalizerIsEqualizer /-
 /-- The equalizer built from `equalizer.ι f g` is limiting. -/
 def equalizerIsEqualizer : IsLimit (Fork.ofι (equalizer.ι f g) (equalizer.condition f g)) :=
   IsLimit.ofIsoLimit (limit.isLimit _) (Fork.ext (Iso.refl _) (by tidy))
 #align category_theory.limits.equalizer_is_equalizer CategoryTheory.Limits.equalizerIsEqualizer
+-/
 
 variable {f g}
 
+#print CategoryTheory.Limits.equalizer.lift /-
 /-- A morphism `k : W ⟶ X` satisfying `k ≫ f = k ≫ g` factors through the equalizer of `f` and `g`
     via `equalizer.lift : W ⟶ equalizer f g`. -/
 abbrev equalizer.lift {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) : W ⟶ equalizer f g :=
   limit.lift (parallelPair f g) (Fork.ofι k h)
 #align category_theory.limits.equalizer.lift CategoryTheory.Limits.equalizer.lift
+-/
 
+#print CategoryTheory.Limits.equalizer.lift_ι /-
 @[simp, reassoc.1]
 theorem equalizer.lift_ι {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
     equalizer.lift k h ≫ equalizer.ι f g = k :=
   limit.lift_π _ _
 #align category_theory.limits.equalizer.lift_ι CategoryTheory.Limits.equalizer.lift_ι
+-/
 
+#print CategoryTheory.Limits.equalizer.lift' /-
 /-- A morphism `k : W ⟶ X` satisfying `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ equalizer f g`
     satisfying `l ≫ equalizer.ι f g = k`. -/
 def equalizer.lift' {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
     { l : W ⟶ equalizer f g // l ≫ equalizer.ι f g = k } :=
   ⟨equalizer.lift k h, equalizer.lift_ι _ _⟩
 #align category_theory.limits.equalizer.lift' CategoryTheory.Limits.equalizer.lift'
+-/
 
+#print CategoryTheory.Limits.equalizer.hom_ext /-
 /-- Two maps into an equalizer are equal if they are are equal when composed with the equalizer
     map. -/
 @[ext]
@@ -801,16 +1258,21 @@ theorem equalizer.hom_ext {W : C} {k l : W ⟶ equalizer f g}
     (h : k ≫ equalizer.ι f g = l ≫ equalizer.ι f g) : k = l :=
   Fork.IsLimit.hom_ext (limit.isLimit _) h
 #align category_theory.limits.equalizer.hom_ext CategoryTheory.Limits.equalizer.hom_ext
+-/
 
+#print CategoryTheory.Limits.equalizer.existsUnique /-
 theorem equalizer.existsUnique {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
     ∃! l : W ⟶ equalizer f g, l ≫ equalizer.ι f g = k :=
   Fork.IsLimit.existsUnique (limit.isLimit _) _ h
 #align category_theory.limits.equalizer.exists_unique CategoryTheory.Limits.equalizer.existsUnique
+-/
 
+#print CategoryTheory.Limits.equalizer.ι_mono /-
 /-- An equalizer morphism is a monomorphism -/
 instance equalizer.ι_mono : Mono (equalizer.ι f g)
     where right_cancellation Z h k w := equalizer.hom_ext w
 #align category_theory.limits.equalizer.ι_mono CategoryTheory.Limits.equalizer.ι_mono
+-/
 
 end
 
@@ -818,6 +1280,12 @@ section
 
 variable {f g}
 
+/- warning: category_theory.limits.mono_of_is_limit_fork -> CategoryTheory.Limits.mono_of_isLimit_fork is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {X : C} {Y : C} {f : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {g : Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) X Y} {c : CategoryTheory.Limits.Fork.{u1, u2} C _inst_1 X Y f g}, (CategoryTheory.Limits.IsLimit.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) c) -> (CategoryTheory.Mono.{u1, u2} C _inst_1 (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Functor.obj.{u1, u1, u2, max u1 u2} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Limits.Cone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) c)) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Functor.obj.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) CategoryTheory.Limits.WalkingParallelPair.zero) (CategoryTheory.Limits.Fork.ι.{u1, u2} C _inst_1 X Y f g c))
+but is expected to have type
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.mono_of_is_limit_fork CategoryTheory.Limits.mono_of_isLimit_forkₓ'. -/
 /-- The equalizer morphism in any limit cone is a monomorphism. -/
 theorem mono_of_isLimit_fork {c : Fork f g} (i : IsLimit c) : Mono (Fork.ι c) :=
   { right_cancellation := fun Z h k w => Fork.IsLimit.hom_ext i w }
@@ -829,11 +1297,14 @@ section
 
 variable {f g}
 
+#print CategoryTheory.Limits.idFork /-
 /-- The identity determines a cone on the equalizer diagram of `f` and `g` if `f = g`. -/
 def idFork (h : f = g) : Fork f g :=
   Fork.ofι (𝟙 X) <| h ▸ rfl
 #align category_theory.limits.id_fork CategoryTheory.Limits.idFork
+-/
 
+#print CategoryTheory.Limits.isLimitIdFork /-
 /-- The identity on `X` is an equalizer of `(f, g)`, if `f = g`. -/
 def isLimitIdFork (h : f = g) : IsLimit (idFork h) :=
   Fork.IsLimit.mk _ (fun s => Fork.ι s) (fun s => Category.comp_id _) fun s m h =>
@@ -841,61 +1312,99 @@ def isLimitIdFork (h : f = g) : IsLimit (idFork h) :=
     convert h
     exact (category.comp_id _).symm
 #align category_theory.limits.is_limit_id_fork CategoryTheory.Limits.isLimitIdFork
+-/
 
+/- warning: category_theory.limits.is_iso_limit_cone_parallel_pair_of_eq -> CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_eq is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_limit_cone_parallel_pair_of_eq CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_eqₓ'. -/
 /-- Every equalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_eq (h₀ : f = g) {c : Fork f g} (h : IsLimit c) :
     IsIso c.ι :=
   IsIso.of_iso <| IsLimit.conePointUniqueUpToIso h <| isLimitIdFork h₀
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_eq CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_eq
 
+#print CategoryTheory.Limits.equalizer.ι_of_eq /-
 /-- The equalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem equalizer.ι_of_eq [HasEqualizer f g] (h : f = g) : IsIso (equalizer.ι f g) :=
   isIso_limit_cone_parallelPair_of_eq h <| limit.isLimit _
 #align category_theory.limits.equalizer.ι_of_eq CategoryTheory.Limits.equalizer.ι_of_eq
+-/
 
+/- warning: category_theory.limits.is_iso_limit_cone_parallel_pair_of_self -> CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_self is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_limit_cone_parallel_pair_of_self CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_selfₓ'. -/
 /-- Every equalizer of `(f, f)` is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_self {c : Fork f f} (h : IsLimit c) : IsIso c.ι :=
   isIso_limit_cone_parallelPair_of_eq rfl h
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_self CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_self
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_limit_cone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_epiₓ'. -/
 /-- An equalizer that is an epimorphism is an isomorphism. -/
 theorem isIso_limit_cone_parallelPair_of_epi {c : Fork f g} (h : IsLimit c) [Epi c.ι] : IsIso c.ι :=
   isIso_limit_cone_parallelPair_of_eq ((cancel_epi _).1 (Fork.condition c)) h
 #align category_theory.limits.is_iso_limit_cone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cone_parallelPair_of_epi
 
+/- warning: category_theory.limits.eq_of_epi_fork_ι -> CategoryTheory.Limits.eq_of_epi_fork_ι is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.eq_of_epi_fork_ι CategoryTheory.Limits.eq_of_epi_fork_ιₓ'. -/
 /-- Two morphisms are equal if there is a fork whose inclusion is epi. -/
 theorem eq_of_epi_fork_ι (t : Fork f g) [Epi (Fork.ι t)] : f = g :=
   (cancel_epi (Fork.ι t)).1 <| Fork.condition t
 #align category_theory.limits.eq_of_epi_fork_ι CategoryTheory.Limits.eq_of_epi_fork_ι
 
+#print CategoryTheory.Limits.eq_of_epi_equalizer /-
 /-- If the equalizer of two morphisms is an epimorphism, then the two morphisms are equal. -/
 theorem eq_of_epi_equalizer [HasEqualizer f g] [Epi (equalizer.ι f g)] : f = g :=
   (cancel_epi (equalizer.ι f g)).1 <| equalizer.condition _ _
 #align category_theory.limits.eq_of_epi_equalizer CategoryTheory.Limits.eq_of_epi_equalizer
+-/
 
 end
 
+#print CategoryTheory.Limits.hasEqualizer_of_self /-
 instance hasEqualizer_of_self : HasEqualizer f f :=
   HasLimit.mk
     { Cone := idFork rfl
       IsLimit := isLimitIdFork rfl }
 #align category_theory.limits.has_equalizer_of_self CategoryTheory.Limits.hasEqualizer_of_self
+-/
 
+#print CategoryTheory.Limits.equalizer.ι_of_self /-
 /-- The equalizer inclusion for `(f, f)` is an isomorphism. -/
 instance equalizer.ι_of_self : IsIso (equalizer.ι f f) :=
   equalizer.ι_of_eq rfl
 #align category_theory.limits.equalizer.ι_of_self CategoryTheory.Limits.equalizer.ι_of_self
+-/
 
+#print CategoryTheory.Limits.equalizer.isoSourceOfSelf /-
 /-- The equalizer of a morphism with itself is isomorphic to the source. -/
 def equalizer.isoSourceOfSelf : equalizer f f ≅ X :=
   asIso (equalizer.ι f f)
 #align category_theory.limits.equalizer.iso_source_of_self CategoryTheory.Limits.equalizer.isoSourceOfSelf
+-/
 
+#print CategoryTheory.Limits.equalizer.isoSourceOfSelf_hom /-
 @[simp]
 theorem equalizer.isoSourceOfSelf_hom : (equalizer.isoSourceOfSelf f).Hom = equalizer.ι f f :=
   rfl
 #align category_theory.limits.equalizer.iso_source_of_self_hom CategoryTheory.Limits.equalizer.isoSourceOfSelf_hom
+-/
 
+#print CategoryTheory.Limits.equalizer.isoSourceOfSelf_inv /-
 @[simp]
 theorem equalizer.isoSourceOfSelf_inv :
     (equalizer.isoSourceOfSelf f).inv = equalizer.lift (𝟙 X) (by simp) :=
@@ -903,71 +1412,101 @@ theorem equalizer.isoSourceOfSelf_inv :
   ext
   simp [equalizer.iso_source_of_self]
 #align category_theory.limits.equalizer.iso_source_of_self_inv CategoryTheory.Limits.equalizer.isoSourceOfSelf_inv
+-/
 
 section
 
+#print CategoryTheory.Limits.HasCoequalizer /-
 /-- `has_coequalizer f g` represents a particular choice of colimiting cocone
 for the parallel pair of morphisms `f` and `g`.
 -/
 abbrev HasCoequalizer :=
   HasColimit (parallelPair f g)
 #align category_theory.limits.has_coequalizer CategoryTheory.Limits.HasCoequalizer
+-/
 
 variable [HasCoequalizer f g]
 
+#print CategoryTheory.Limits.coequalizer /-
 /-- If a coequalizer of `f` and `g` exists, we can access an arbitrary choice of such by
     saying `coequalizer f g`. -/
 abbrev coequalizer : C :=
   colimit (parallelPair f g)
 #align category_theory.limits.coequalizer CategoryTheory.Limits.coequalizer
+-/
 
+#print CategoryTheory.Limits.coequalizer.π /-
 /-- If a coequalizer of `f` and `g` exists, we can access the corresponding projection by
     saying `coequalizer.π f g`. -/
 abbrev coequalizer.π : Y ⟶ coequalizer f g :=
   colimit.ι (parallelPair f g) one
 #align category_theory.limits.coequalizer.π CategoryTheory.Limits.coequalizer.π
+-/
 
+#print CategoryTheory.Limits.coequalizer.cofork /-
 /-- An arbitrary choice of coequalizer cocone for a parallel pair `f` and `g`.
 -/
 abbrev coequalizer.cofork : Cofork f g :=
   colimit.cocone (parallelPair f g)
 #align category_theory.limits.coequalizer.cofork CategoryTheory.Limits.coequalizer.cofork
+-/
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.coequalizer.cofork_π CategoryTheory.Limits.coequalizer.cofork_πₓ'. -/
 @[simp]
 theorem coequalizer.cofork_π : (coequalizer.cofork f g).π = coequalizer.π f g :=
   rfl
 #align category_theory.limits.coequalizer.cofork_π CategoryTheory.Limits.coequalizer.cofork_π
 
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CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.coequalizer.π.{u1, u2} C _inst_1 X Y f g _inst_2)
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.coequalizer.cofork_ι_app_one CategoryTheory.Limits.coequalizer.cofork_ι_app_oneₓ'. -/
 @[simp]
 theorem coequalizer.cofork_ι_app_one : (coequalizer.cofork f g).ι.app one = coequalizer.π f g :=
   rfl
 #align category_theory.limits.coequalizer.cofork_ι_app_one CategoryTheory.Limits.coequalizer.cofork_ι_app_one
 
+#print CategoryTheory.Limits.coequalizer.condition /-
 @[reassoc.1]
 theorem coequalizer.condition : f ≫ coequalizer.π f g = g ≫ coequalizer.π f g :=
   Cofork.condition <| colimit.cocone <| parallelPair f g
 #align category_theory.limits.coequalizer.condition CategoryTheory.Limits.coequalizer.condition
+-/
 
+#print CategoryTheory.Limits.coequalizerIsCoequalizer /-
 /-- The cofork built from `coequalizer.π f g` is colimiting. -/
 def coequalizerIsCoequalizer :
     IsColimit (Cofork.ofπ (coequalizer.π f g) (coequalizer.condition f g)) :=
   IsColimit.ofIsoColimit (colimit.isColimit _) (Cofork.ext (Iso.refl _) (by tidy))
 #align category_theory.limits.coequalizer_is_coequalizer CategoryTheory.Limits.coequalizerIsCoequalizer
+-/
 
 variable {f g}
 
+#print CategoryTheory.Limits.coequalizer.desc /-
 /-- Any morphism `k : Y ⟶ W` satisfying `f ≫ k = g ≫ k` factors through the coequalizer of `f`
     and `g` via `coequalizer.desc : coequalizer f g ⟶ W`. -/
 abbrev coequalizer.desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) : coequalizer f g ⟶ W :=
   colimit.desc (parallelPair f g) (Cofork.ofπ k h)
 #align category_theory.limits.coequalizer.desc CategoryTheory.Limits.coequalizer.desc
+-/
 
+#print CategoryTheory.Limits.coequalizer.π_desc /-
 @[simp, reassoc.1]
 theorem coequalizer.π_desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) :
     coequalizer.π f g ≫ coequalizer.desc k h = k :=
   colimit.ι_desc _ _
 #align category_theory.limits.coequalizer.π_desc CategoryTheory.Limits.coequalizer.π_desc
+-/
 
+#print CategoryTheory.Limits.coequalizer.π_colimMap_desc /-
 theorem coequalizer.π_colimMap_desc {X' Y' Z : C} (f' g' : X' ⟶ Y') [HasCoequalizer f' g']
     (p : X ⟶ X') (q : Y ⟶ Y') (wf : f ≫ q = p ≫ f') (wg : g ≫ q = p ≫ g') (h : Y' ⟶ Z)
     (wh : f' ≫ h = g' ≫ h) :
@@ -975,14 +1514,18 @@ theorem coequalizer.π_colimMap_desc {X' Y' Z : C} (f' g' : X' ⟶ Y') [HasCoequ
       q ≫ h :=
   by rw [ι_colim_map_assoc, parallel_pair_hom_app_one, coequalizer.π_desc]
 #align category_theory.limits.coequalizer.π_colim_map_desc CategoryTheory.Limits.coequalizer.π_colimMap_desc
+-/
 
+#print CategoryTheory.Limits.coequalizer.desc' /-
 /-- Any morphism `k : Y ⟶ W` satisfying `f ≫ k = g ≫ k` induces a morphism
     `l : coequalizer f g ⟶ W` satisfying `coequalizer.π ≫ g = l`. -/
 def coequalizer.desc' {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) :
     { l : coequalizer f g ⟶ W // coequalizer.π f g ≫ l = k } :=
   ⟨coequalizer.desc k h, coequalizer.π_desc _ _⟩
 #align category_theory.limits.coequalizer.desc' CategoryTheory.Limits.coequalizer.desc'
+-/
 
+#print CategoryTheory.Limits.coequalizer.hom_ext /-
 /-- Two maps from a coequalizer are equal if they are equal when composed with the coequalizer
     map -/
 @[ext]
@@ -990,16 +1533,21 @@ theorem coequalizer.hom_ext {W : C} {k l : coequalizer f g ⟶ W}
     (h : coequalizer.π f g ≫ k = coequalizer.π f g ≫ l) : k = l :=
   Cofork.IsColimit.hom_ext (colimit.isColimit _) h
 #align category_theory.limits.coequalizer.hom_ext CategoryTheory.Limits.coequalizer.hom_ext
+-/
 
+#print CategoryTheory.Limits.coequalizer.existsUnique /-
 theorem coequalizer.existsUnique {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) :
     ∃! d : coequalizer f g ⟶ W, coequalizer.π f g ≫ d = k :=
   Cofork.IsColimit.existsUnique (colimit.isColimit _) _ h
 #align category_theory.limits.coequalizer.exists_unique CategoryTheory.Limits.coequalizer.existsUnique
+-/
 
+#print CategoryTheory.Limits.coequalizer.π_epi /-
 /-- A coequalizer morphism is an epimorphism -/
 instance coequalizer.π_epi : Epi (coequalizer.π f g)
     where left_cancellation Z h k w := coequalizer.hom_ext w
 #align category_theory.limits.coequalizer.π_epi CategoryTheory.Limits.coequalizer.π_epi
+-/
 
 end
 
@@ -1007,6 +1555,12 @@ section
 
 variable {f g}
 
+/- warning: category_theory.limits.epi_of_is_colimit_cofork -> CategoryTheory.Limits.epi_of_isColimit_cofork is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.epi_of_is_colimit_cofork CategoryTheory.Limits.epi_of_isColimit_coforkₓ'. -/
 /-- The coequalizer morphism in any colimit cocone is an epimorphism. -/
 theorem epi_of_isColimit_cofork {c : Cofork f g} (i : IsColimit c) : Epi c.π :=
   { left_cancellation := fun Z h k w => Cofork.IsColimit.hom_ext i w }
@@ -1018,11 +1572,14 @@ section
 
 variable {f g}
 
+#print CategoryTheory.Limits.idCofork /-
 /-- The identity determines a cocone on the coequalizer diagram of `f` and `g`, if `f = g`. -/
 def idCofork (h : f = g) : Cofork f g :=
   Cofork.ofπ (𝟙 Y) <| h ▸ rfl
 #align category_theory.limits.id_cofork CategoryTheory.Limits.idCofork
+-/
 
+#print CategoryTheory.Limits.isColimitIdCofork /-
 /-- The identity on `Y` is a coequalizer of `(f, g)`, where `f = g`.  -/
 def isColimitIdCofork (h : f = g) : IsColimit (idCofork h) :=
   Cofork.IsColimit.mk _ (fun s => Cofork.π s) (fun s => Category.id_comp _) fun s m h =>
@@ -1030,57 +1587,93 @@ def isColimitIdCofork (h : f = g) : IsColimit (idCofork h) :=
     convert h
     exact (category.id_comp _).symm
 #align category_theory.limits.is_colimit_id_cofork CategoryTheory.Limits.isColimitIdCofork
+-/
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_eq CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_eqₓ'. -/
 /-- Every coequalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem isIso_colimit_cocone_parallelPair_of_eq (h₀ : f = g) {c : Cofork f g} (h : IsColimit c) :
     IsIso c.π :=
   IsIso.of_iso <| IsColimit.coconePointUniqueUpToIso (isColimitIdCofork h₀) h
 #align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_eq CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_eq
 
+#print CategoryTheory.Limits.coequalizer.π_of_eq /-
 /-- The coequalizer of `(f, g)`, where `f = g`, is an isomorphism. -/
 theorem coequalizer.π_of_eq [HasCoequalizer f g] (h : f = g) : IsIso (coequalizer.π f g) :=
   isIso_colimit_cocone_parallelPair_of_eq h <| colimit.isColimit _
 #align category_theory.limits.coequalizer.π_of_eq CategoryTheory.Limits.coequalizer.π_of_eq
+-/
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_self CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_selfₓ'. -/
 /-- Every coequalizer of `(f, f)` is an isomorphism. -/
 theorem isIso_colimit_cocone_parallelPair_of_self {c : Cofork f f} (h : IsColimit c) : IsIso c.π :=
   isIso_colimit_cocone_parallelPair_of_eq rfl h
 #align category_theory.limits.is_iso_colimit_cocone_parallel_pair_of_self CategoryTheory.Limits.isIso_colimit_cocone_parallelPair_of_self
 
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u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (Prefunctor.obj.{succ u1, succ u1, u2, max u1 u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C _inst_1)) (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u1, u1, u2, max u2 u1} C _inst_1 (CategoryTheory.Functor.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.category.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1) (CategoryTheory.Functor.const.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1)) (CategoryTheory.Limits.Cocone.pt.{0, u1, 0, u2} CategoryTheory.Limits.WalkingParallelPair CategoryTheory.Limits.walkingParallelPairHomCategory C _inst_1 (CategoryTheory.Limits.parallelPair.{u1, u2} C _inst_1 X Y f g) c))) CategoryTheory.Limits.WalkingParallelPair.one) (CategoryTheory.Limits.Cofork.π.{u1, u2} C _inst_1 X Y f g c))
+Case conversion may be inaccurate. Consider using '#align category_theory.limits.is_iso_limit_cocone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cocone_parallelPair_of_epiₓ'. -/
 /-- A coequalizer that is a monomorphism is an isomorphism. -/
 theorem isIso_limit_cocone_parallelPair_of_epi {c : Cofork f g} (h : IsColimit c) [Mono c.π] :
     IsIso c.π :=
   isIso_colimit_cocone_parallelPair_of_eq ((cancel_mono _).1 (Cofork.condition c)) h
 #align category_theory.limits.is_iso_limit_cocone_parallel_pair_of_epi CategoryTheory.Limits.isIso_limit_cocone_parallelPair_of_epi
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.eq_of_mono_cofork_π CategoryTheory.Limits.eq_of_mono_cofork_πₓ'. -/
 /-- Two morphisms are equal if there is a cofork whose projection is mono. -/
 theorem eq_of_mono_cofork_π (t : Cofork f g) [Mono (Cofork.π t)] : f = g :=
   (cancel_mono (Cofork.π t)).1 <| Cofork.condition t
 #align category_theory.limits.eq_of_mono_cofork_π CategoryTheory.Limits.eq_of_mono_cofork_π
 
+#print CategoryTheory.Limits.eq_of_mono_coequalizer /-
 /-- If the coequalizer of two morphisms is a monomorphism, then the two morphisms are equal. -/
 theorem eq_of_mono_coequalizer [HasCoequalizer f g] [Mono (coequalizer.π f g)] : f = g :=
   (cancel_mono (coequalizer.π f g)).1 <| coequalizer.condition _ _
 #align category_theory.limits.eq_of_mono_coequalizer CategoryTheory.Limits.eq_of_mono_coequalizer
+-/
 
 end
 
+#print CategoryTheory.Limits.hasCoequalizer_of_self /-
 instance hasCoequalizer_of_self : HasCoequalizer f f :=
   HasColimit.mk
     { Cocone := idCofork rfl
       IsColimit := isColimitIdCofork rfl }
 #align category_theory.limits.has_coequalizer_of_self CategoryTheory.Limits.hasCoequalizer_of_self
+-/
 
+#print CategoryTheory.Limits.coequalizer.π_of_self /-
 /-- The coequalizer projection for `(f, f)` is an isomorphism. -/
 instance coequalizer.π_of_self : IsIso (coequalizer.π f f) :=
   coequalizer.π_of_eq rfl
 #align category_theory.limits.coequalizer.π_of_self CategoryTheory.Limits.coequalizer.π_of_self
+-/
 
+#print CategoryTheory.Limits.coequalizer.isoTargetOfSelf /-
 /-- The coequalizer of a morphism with itself is isomorphic to the target. -/
 def coequalizer.isoTargetOfSelf : coequalizer f f ≅ Y :=
   (asIso (coequalizer.π f f)).symm
 #align category_theory.limits.coequalizer.iso_target_of_self CategoryTheory.Limits.coequalizer.isoTargetOfSelf
+-/
 
+#print CategoryTheory.Limits.coequalizer.isoTargetOfSelf_hom /-
 @[simp]
 theorem coequalizer.isoTargetOfSelf_hom :
     (coequalizer.isoTargetOfSelf f).Hom = coequalizer.desc (𝟙 Y) (by simp) :=
@@ -1088,16 +1681,25 @@ theorem coequalizer.isoTargetOfSelf_hom :
   ext
   simp [coequalizer.iso_target_of_self]
 #align category_theory.limits.coequalizer.iso_target_of_self_hom CategoryTheory.Limits.coequalizer.isoTargetOfSelf_hom
+-/
 
+#print CategoryTheory.Limits.coequalizer.isoTargetOfSelf_inv /-
 @[simp]
 theorem coequalizer.isoTargetOfSelf_inv : (coequalizer.isoTargetOfSelf f).inv = coequalizer.π f f :=
   rfl
 #align category_theory.limits.coequalizer.iso_target_of_self_inv CategoryTheory.Limits.coequalizer.isoTargetOfSelf_inv
+-/
 
 section Comparison
 
 variable {D : Type u₂} [Category.{v₂} D] (G : C ⥤ D)
 
+/- warning: category_theory.limits.equalizer_comparison -> CategoryTheory.Limits.equalizerComparison is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.equalizer_comparison CategoryTheory.Limits.equalizerComparisonₓ'. -/
 /-- The comparison morphism for the equalizer of `f,g`.
 This is an isomorphism iff `G` preserves the equalizer of `f,g`; see
 `category_theory/limits/preserves/shapes/equalizers.lean`
@@ -1107,12 +1709,24 @@ def equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
   equalizer.lift (G.map (equalizer.ι _ _)) (by simp only [← G.map_comp, equalizer.condition])
 #align category_theory.limits.equalizer_comparison CategoryTheory.Limits.equalizerComparison
 
+/- warning: category_theory.limits.equalizer_comparison_comp_π -> CategoryTheory.Limits.equalizerComparison_comp_π is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.equalizer_comparison_comp_π CategoryTheory.Limits.equalizerComparison_comp_πₓ'. -/
 @[simp, reassoc.1]
 theorem equalizerComparison_comp_π [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
     equalizerComparison f g G ≫ equalizer.ι (G.map f) (G.map g) = G.map (equalizer.ι f g) :=
   equalizer.lift_ι _ _
 #align category_theory.limits.equalizer_comparison_comp_π CategoryTheory.Limits.equalizerComparison_comp_π
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.map_lift_equalizer_comparison CategoryTheory.Limits.map_lift_equalizerComparisonₓ'. -/
 @[simp, reassoc.1]
 theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] {Z : C}
     {h : Z ⟶ X} (w : h ≫ f = h ≫ g) :
@@ -1123,18 +1737,36 @@ theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f)
   simp [← G.map_comp]
 #align category_theory.limits.map_lift_equalizer_comparison CategoryTheory.Limits.map_lift_equalizerComparison
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.coequalizer_comparison CategoryTheory.Limits.coequalizerComparisonₓ'. -/
 /-- The comparison morphism for the coequalizer of `f,g`. -/
 def coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer (G.map f) (G.map g) ⟶ G.obj (coequalizer f g) :=
   coequalizer.desc (G.map (coequalizer.π _ _)) (by simp only [← G.map_comp, coequalizer.condition])
 #align category_theory.limits.coequalizer_comparison CategoryTheory.Limits.coequalizerComparison
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.ι_comp_coequalizer_comparison CategoryTheory.Limits.ι_comp_coequalizerComparisonₓ'. -/
 @[simp, reassoc.1]
 theorem ι_comp_coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer.π _ _ ≫ coequalizerComparison f g G = G.map (coequalizer.π _ _) :=
   coequalizer.π_desc _ _
 #align category_theory.limits.ι_comp_coequalizer_comparison CategoryTheory.Limits.ι_comp_coequalizerComparison
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.coequalizer_comparison_map_desc CategoryTheory.Limits.coequalizerComparison_map_descₓ'. -/
 @[simp, reassoc.1]
 theorem coequalizerComparison_map_desc [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)]
     {Z : C} {h : Y ⟶ Z} (w : f ≫ h = g ≫ h) :
@@ -1149,33 +1781,42 @@ end Comparison
 
 variable (C)
 
+#print CategoryTheory.Limits.HasEqualizers /-
 /-- `has_equalizers` represents a choice of equalizer for every pair of morphisms -/
 abbrev HasEqualizers :=
   HasLimitsOfShape WalkingParallelPair C
 #align category_theory.limits.has_equalizers CategoryTheory.Limits.HasEqualizers
+-/
 
+#print CategoryTheory.Limits.HasCoequalizers /-
 /-- `has_coequalizers` represents a choice of coequalizer for every pair of morphisms -/
 abbrev HasCoequalizers :=
   HasColimitsOfShape WalkingParallelPair C
 #align category_theory.limits.has_coequalizers CategoryTheory.Limits.HasCoequalizers
+-/
 
+#print CategoryTheory.Limits.hasEqualizers_of_hasLimit_parallelPair /-
 /-- If `C` has all limits of diagrams `parallel_pair f g`, then it has all equalizers -/
 theorem hasEqualizers_of_hasLimit_parallelPair
     [∀ {X Y : C} {f g : X ⟶ Y}, HasLimit (parallelPair f g)] : HasEqualizers C :=
   { HasLimit := fun F => hasLimitOfIso (diagramIsoParallelPair F).symm }
 #align category_theory.limits.has_equalizers_of_has_limit_parallel_pair CategoryTheory.Limits.hasEqualizers_of_hasLimit_parallelPair
+-/
 
+#print CategoryTheory.Limits.hasCoequalizers_of_hasColimit_parallelPair /-
 /-- If `C` has all colimits of diagrams `parallel_pair f g`, then it has all coequalizers -/
 theorem hasCoequalizers_of_hasColimit_parallelPair
     [∀ {X Y : C} {f g : X ⟶ Y}, HasColimit (parallelPair f g)] : HasCoequalizers C :=
   { HasColimit := fun F => hasColimitOfIso (diagramIsoParallelPair F) }
 #align category_theory.limits.has_coequalizers_of_has_colimit_parallel_pair CategoryTheory.Limits.hasCoequalizers_of_hasColimit_parallelPair
+-/
 
 section
 
 -- In this section we show that a split mono `f` equalizes `(retraction f ≫ f)` and `(𝟙 Y)`.
 variable {C} [IsSplitMono f]
 
+#print CategoryTheory.Limits.coneOfIsSplitMono /-
 /-- A split mono `f` equalizes `(retraction f ≫ f)` and `(𝟙 Y)`.
 Here we build the cone, and show in `is_split_mono_equalizes` that it is a limit cone.
 -/
@@ -1183,12 +1824,20 @@ Here we build the cone, and show in `is_split_mono_equalizes` that it is a limit
 def coneOfIsSplitMono : Fork (𝟙 Y) (retraction f ≫ f) :=
   Fork.ofι f (by simp)
 #align category_theory.limits.cone_of_is_split_mono CategoryTheory.Limits.coneOfIsSplitMono
+-/
 
+/- warning: category_theory.limits.cone_of_is_split_mono_ι -> CategoryTheory.Limits.coneOfIsSplitMono_ι is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.cone_of_is_split_mono_ι CategoryTheory.Limits.coneOfIsSplitMono_ιₓ'. -/
 @[simp]
 theorem coneOfIsSplitMono_ι : (coneOfIsSplitMono f).ι = f :=
   rfl
 #align category_theory.limits.cone_of_is_split_mono_ι CategoryTheory.Limits.coneOfIsSplitMono_ι
 
+#print CategoryTheory.Limits.isSplitMonoEqualizes /-
 /-- A split mono `f` equalizes `(retraction f ≫ f)` and `(𝟙 Y)`.
 -/
 def isSplitMonoEqualizes {X Y : C} (f : X ⟶ Y) [IsSplitMono f] : IsLimit (coneOfIsSplitMono f) :=
@@ -1198,9 +1847,11 @@ def isSplitMonoEqualizes {X Y : C} (f : X ⟶ Y) [IsSplitMono f] : IsLimit (cone
       rw [category.assoc, ← s.condition]
       apply category.comp_id, fun m hm => by simp [← hm]⟩
 #align category_theory.limits.is_split_mono_equalizes CategoryTheory.Limits.isSplitMonoEqualizes
+-/
 
 end
 
+#print CategoryTheory.Limits.splitMonoOfEqualizer /-
 /-- We show that the converse to `is_split_mono_equalizes` is true:
 Whenever `f` equalizes `(r ≫ f)` and `(𝟙 Y)`, then `r` is a retraction of `f`. -/
 def splitMonoOfEqualizer {X Y : C} {f : X ⟶ Y} {r : Y ⟶ X} (hr : f ≫ r ≫ f = f)
@@ -1209,9 +1860,11 @@ def splitMonoOfEqualizer {X Y : C} {f : X ⟶ Y} {r : Y ⟶ X} (hr : f ≫ r ≫
   retraction := r
   id' := Fork.IsLimit.hom_ext h ((Category.assoc _ _ _).trans <| hr.trans (Category.id_comp _).symm)
 #align category_theory.limits.split_mono_of_equalizer CategoryTheory.Limits.splitMonoOfEqualizer
+-/
 
 variable {C f g}
 
+#print CategoryTheory.Limits.isEqualizerCompMono /-
 /-- The fork obtained by postcomposing an equalizer fork with a monomorphism is an equalizer. -/
 def isEqualizerCompMono {c : Fork f g} (i : IsLimit c) {Z : C} (h : Y ⟶ Z) [hm : Mono h] :
     IsLimit (Fork.ofι c.ι (by simp [reassoc_of c.condition]) : Fork (f ≫ h) (g ≫ h)) :=
@@ -1221,16 +1874,25 @@ def isEqualizerCompMono {c : Fork f g} (i : IsLimit c) {Z : C} (h : Y ⟶ Z) [hm
     ⟨l.1, l.2, fun m hm => by
       apply fork.is_limit.hom_ext i <;> rw [fork.ι_of_ι] at hm <;> rw [hm] <;> exact l.2.symm⟩
 #align category_theory.limits.is_equalizer_comp_mono CategoryTheory.Limits.isEqualizerCompMono
+-/
 
 variable (C f g)
 
+#print CategoryTheory.Limits.hasEqualizer_comp_mono /-
 @[instance]
 theorem hasEqualizer_comp_mono [HasEqualizer f g] {Z : C} (h : Y ⟶ Z) [Mono h] :
     HasEqualizer (f ≫ h) (g ≫ h) :=
   ⟨⟨{   Cone := _
         IsLimit := isEqualizerCompMono (limit.isLimit _) h }⟩⟩
 #align category_theory.limits.has_equalizer_comp_mono CategoryTheory.Limits.hasEqualizer_comp_mono
+-/
 
+/- warning: category_theory.limits.split_mono_of_idempotent_of_is_limit_fork -> CategoryTheory.Limits.splitMonoOfIdempotentOfIsLimitFork is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.limits.split_mono_of_idempotent_of_is_limit_fork CategoryTheory.Limits.splitMonoOfIdempotentOfIsLimitForkₓ'. -/
 /-- An equalizer of an idempotent morphism and the identity is split mono. -/
 @[simps]
 def splitMonoOfIdempotentOfIsLimitFork {X : C} {f : X ⟶ X} (hf : f ≫ f = f) {c : Fork (𝟙 X) f}
@@ -1243,17 +1905,20 @@ def splitMonoOfIdempotentOfIsLimitFork {X : C} {f : X ⟶ X} (hf : f ≫ f = f)
     exact category.comp_id c.ι
 #align category_theory.limits.split_mono_of_idempotent_of_is_limit_fork CategoryTheory.Limits.splitMonoOfIdempotentOfIsLimitFork
 
+#print CategoryTheory.Limits.splitMonoOfIdempotentEqualizer /-
 /-- The equalizer of an idempotent morphism and the identity is split mono. -/
 def splitMonoOfIdempotentEqualizer {X : C} {f : X ⟶ X} (hf : f ≫ f = f) [HasEqualizer (𝟙 X) f] :
     SplitMono (equalizer.ι (𝟙 X) f) :=
   splitMonoOfIdempotentOfIsLimitFork _ hf (limit.isLimit _)
 #align category_theory.limits.split_mono_of_idempotent_equalizer CategoryTheory.Limits.splitMonoOfIdempotentEqualizer
+-/
 
 section
 
 -- In this section we show that a split epi `f` coequalizes `(f ≫ section_ f)` and `(𝟙 X)`.
 variable {C} [IsSplitEpi f]
 
+#print CategoryTheory.Limits.coconeOfIsSplitEpi /-
 /-- A split epi `f` coequalizes `(f ≫ section_ f)` and `(𝟙 X)`.
 Here we build the cocone, and show in `is_split_epi_coequalizes` that it is a colimit cocone.
 -/
@@ -1261,12 +1926,20 @@ Here we build the cocone, and show in `is_split_epi_coequalizes` that it is a co
 def coconeOfIsSplitEpi : Cofork (𝟙 X) (f ≫ section_ f) :=
   Cofork.ofπ f (by simp)
 #align category_theory.limits.cocone_of_is_split_epi CategoryTheory.Limits.coconeOfIsSplitEpi
+-/
 
+/- warning: category_theory.limits.cocone_of_is_split_epi_π -> CategoryTheory.Limits.coconeOfIsSplitEpi_π is a dubious translation:
+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.limits.cocone_of_is_split_epi_π CategoryTheory.Limits.coconeOfIsSplitEpi_πₓ'. -/
 @[simp]
 theorem coconeOfIsSplitEpi_π : (coconeOfIsSplitEpi f).π = f :=
   rfl
 #align category_theory.limits.cocone_of_is_split_epi_π CategoryTheory.Limits.coconeOfIsSplitEpi_π
 
+#print CategoryTheory.Limits.isSplitEpiCoequalizes /-
 /-- A split epi `f` coequalizes `(f ≫ section_ f)` and `(𝟙 X)`.
 -/
 def isSplitEpiCoequalizes {X Y : C} (f : X ⟶ Y) [IsSplitEpi f] : IsColimit (coconeOfIsSplitEpi f) :=
@@ -1275,9 +1948,11 @@ def isSplitEpiCoequalizes {X Y : C} (f : X ⟶ Y) [IsSplitEpi f] : IsColimit (co
       dsimp
       rw [← category.assoc, ← s.condition, category.id_comp], fun m hm => by simp [← hm]⟩
 #align category_theory.limits.is_split_epi_coequalizes CategoryTheory.Limits.isSplitEpiCoequalizes
+-/
 
 end
 
+#print CategoryTheory.Limits.splitEpiOfCoequalizer /-
 /-- We show that the converse to `is_split_epi_equalizes` is true:
 Whenever `f` coequalizes `(f ≫ s)` and `(𝟙 X)`, then `s` is a section of `f`. -/
 def splitEpiOfCoequalizer {X Y : C} {f : X ⟶ Y} {s : Y ⟶ X} (hs : f ≫ s ≫ f = f)
@@ -1290,9 +1965,11 @@ def splitEpiOfCoequalizer {X Y : C} {f : X ⟶ Y} {s : Y ⟶ X} (hs : f ≫ s 
   section_ := s
   id' := Cofork.IsColimit.hom_ext h (hs.trans (Category.comp_id _).symm)
 #align category_theory.limits.split_epi_of_coequalizer CategoryTheory.Limits.splitEpiOfCoequalizer
+-/
 
 variable {C f g}
 
+#print CategoryTheory.Limits.isCoequalizerEpiComp /-
 /-- The cofork obtained by precomposing a coequalizer cofork with an epimorphism is
 a coequalizer. -/
 def isCoequalizerEpiComp {c : Cofork f g} (i : IsColimit c) {W : C} (h : W ⟶ X) [hm : Epi h] :
@@ -1304,15 +1981,24 @@ def isCoequalizerEpiComp {c : Cofork f g} (i : IsColimit c) {W : C} (h : W ⟶ X
     ⟨l.1, l.2, fun m hm => by
       apply cofork.is_colimit.hom_ext i <;> rw [cofork.π_of_π] at hm <;> rw [hm] <;> exact l.2.symm⟩
 #align category_theory.limits.is_coequalizer_epi_comp CategoryTheory.Limits.isCoequalizerEpiComp
+-/
 
+#print CategoryTheory.Limits.hasCoequalizer_epi_comp /-
 theorem hasCoequalizer_epi_comp [HasCoequalizer f g] {W : C} (h : W ⟶ X) [hm : Epi h] :
     HasCoequalizer (h ≫ f) (h ≫ g) :=
   ⟨⟨{   Cocone := _
         IsColimit := isCoequalizerEpiComp (colimit.isColimit _) h }⟩⟩
 #align category_theory.limits.has_coequalizer_epi_comp CategoryTheory.Limits.hasCoequalizer_epi_comp
+-/
 
 variable (C f g)
 
+/- warning: category_theory.limits.split_epi_of_idempotent_of_is_colimit_cofork -> CategoryTheory.Limits.splitEpiOfIdempotentOfIsColimitCofork is a dubious translation:
+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.limits.split_epi_of_idempotent_of_is_colimit_cofork CategoryTheory.Limits.splitEpiOfIdempotentOfIsColimitCoforkₓ'. -/
 /-- A coequalizer of an idempotent morphism and the identity is split epi. -/
 @[simps]
 def splitEpiOfIdempotentOfIsColimitCofork {X : C} {f : X ⟶ X} (hf : f ≫ f = f) {c : Cofork (𝟙 X) f}
@@ -1326,11 +2012,13 @@ def splitEpiOfIdempotentOfIsColimitCofork {X : C} {f : X ⟶ X} (hf : f ≫ f =
     exact category.id_comp _
 #align category_theory.limits.split_epi_of_idempotent_of_is_colimit_cofork CategoryTheory.Limits.splitEpiOfIdempotentOfIsColimitCofork
 
+#print CategoryTheory.Limits.splitEpiOfIdempotentCoequalizer /-
 /-- The coequalizer of an idempotent morphism and the identity is split epi. -/
 def splitEpiOfIdempotentCoequalizer {X : C} {f : X ⟶ X} (hf : f ≫ f = f) [HasCoequalizer (𝟙 X) f] :
     SplitEpi (coequalizer.π (𝟙 X) f) :=
   splitEpiOfIdempotentOfIsColimitCofork _ hf (colimit.isColimit _)
 #align category_theory.limits.split_epi_of_idempotent_coequalizer CategoryTheory.Limits.splitEpiOfIdempotentCoequalizer
+-/
 
 end CategoryTheory.Limits

4698e35c

bump to nightly-2023-02-28-22

mathlib commit https://github.com/leanprover-community/mathlib/commit/9da1b3534b65d9661eb8f42443598a92bbb49211

1fb1623f

Diff

@@ -359,7 +359,7 @@ theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g 
 @[simps]
 def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g
     where
-  x := P
+  pt := P
   π :=
     { app := fun X => by cases X; exact ι; exact ι ≫ f
       naturality' := fun X Y f =>
@@ -378,7 +378,7 @@ def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g
 @[simps]
 def Cofork.ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : Cofork f g
     where
-  x := P
+  pt := P
   ι :=
     { app := fun X => WalkingParallelPair.casesOn X (f ≫ π) π
       naturality' := fun i j f => by cases f <;> dsimp <;> simp [w] }
@@ -407,7 +407,7 @@ theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
 
 /-- To check whether two maps are equalized by both maps of a fork, it suffices to check it for the
     first map -/
-theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.x} (h : k ≫ s.ι = l ≫ s.ι) :
+theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫ s.ι = l ≫ s.ι) :
     ∀ j : WalkingParallelPair, k ≫ s.π.app j = l ≫ s.π.app j
   | zero => h
   | one => by rw [s.app_one_eq_ι_comp_left, reassoc_of h]
@@ -415,18 +415,18 @@ theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.x} (h : k ≫ s
 
 /-- To check whether two maps are coequalized by both maps of a cofork, it suffices to check it for
     the second map -/
-theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.x ⟶ W}
+theorem Cofork.coequalizer_ext (s : Cofork f g) {W : C} {k l : s.pt ⟶ W}
     (h : Cofork.π s ≫ k = Cofork.π s ≫ l) : ∀ j : WalkingParallelPair, s.ι.app j ≫ k = s.ι.app j ≫ l
   | zero => by simp only [s.app_zero_eq_comp_π_left, category.assoc, h]
   | one => h
 #align category_theory.limits.cofork.coequalizer_ext CategoryTheory.Limits.Cofork.coequalizer_ext
 
-theorem Fork.IsLimit.hom_ext {s : Fork f g} (hs : IsLimit s) {W : C} {k l : W ⟶ s.x}
+theorem Fork.IsLimit.hom_ext {s : Fork f g} (hs : IsLimit s) {W : C} {k l : W ⟶ s.pt}
     (h : k ≫ Fork.ι s = l ≫ Fork.ι s) : k = l :=
   hs.hom_ext <| Fork.equalizer_ext _ h
 #align category_theory.limits.fork.is_limit.hom_ext CategoryTheory.Limits.Fork.IsLimit.hom_ext
 
-theorem Cofork.IsColimit.hom_ext {s : Cofork f g} (hs : IsColimit s) {W : C} {k l : s.x ⟶ W}
+theorem Cofork.IsColimit.hom_ext {s : Cofork f g} (hs : IsColimit s) {W : C} {k l : s.pt ⟶ W}
     (h : Cofork.π s ≫ k = Cofork.π s ≫ l) : k = l :=
   hs.hom_ext <| Cofork.coequalizer_ext _ h
 #align category_theory.limits.cofork.is_colimit.hom_ext CategoryTheory.Limits.Cofork.IsColimit.hom_ext
@@ -444,25 +444,25 @@ theorem Cofork.IsColimit.π_desc {s t : Cofork f g} (hs : IsColimit s) : s.π 
 /-- If `s` is a limit fork over `f` and `g`, then a morphism `k : W ⟶ X` satisfying
     `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ s.X` such that `l ≫ fork.ι s = k`. -/
 def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
-    { l : W ⟶ s.x // l ≫ Fork.ι s = k } :=
+    { l : W ⟶ s.pt // l ≫ Fork.ι s = k } :=
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _⟩
 #align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'
 
 /-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
     `f ≫ k = g ≫ k` induces a morphism `l : s.X ⟶ W` such that `cofork.π s ≫ l = k`. -/
 def Cofork.IsColimit.desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
-    (h : f ≫ k = g ≫ k) : { l : s.x ⟶ W // Cofork.π s ≫ l = k } :=
+    (h : f ≫ k = g ≫ k) : { l : s.pt ⟶ W // Cofork.π s ≫ l = k } :=
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _⟩
 #align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'
 
 theorem Fork.IsLimit.existsUnique {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X)
-    (h : k ≫ f = k ≫ g) : ∃! l : W ⟶ s.x, l ≫ Fork.ι s = k :=
+    (h : k ≫ f = k ≫ g) : ∃! l : W ⟶ s.pt, l ≫ Fork.ι s = k :=
   ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _, fun m hm =>
     Fork.IsLimit.hom_ext hs <| hm.symm ▸ (hs.fac (Fork.ofι _ h) WalkingParallelPair.zero).symm⟩
 #align category_theory.limits.fork.is_limit.exists_unique CategoryTheory.Limits.Fork.IsLimit.existsUnique
 
 theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
-    (h : f ≫ k = g ≫ k) : ∃! d : s.x ⟶ W, Cofork.π s ≫ d = k :=
+    (h : f ≫ k = g ≫ k) : ∃! d : s.pt ⟶ W, Cofork.π s ≫ d = k :=
   ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _, fun m hm =>
     Cofork.IsColimit.hom_ext hs <| hm.symm ▸ (hs.fac (Cofork.ofπ _ h) WalkingParallelPair.one).symm⟩
 #align category_theory.limits.cofork.is_colimit.exists_unique CategoryTheory.Limits.Cofork.IsColimit.existsUnique
@@ -470,9 +470,9 @@ theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C
 /-- This is a slightly more convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content -/
 @[simps lift]
-def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.x ⟶ t.x)
+def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.pt ⟶ t.pt)
     (fac : ∀ s : Fork f g, lift s ≫ Fork.ι t = Fork.ι s)
-    (uniq : ∀ (s : Fork f g) (m : s.x ⟶ t.x) (w : m ≫ t.ι = s.ι), m = lift s) : IsLimit t :=
+    (uniq : ∀ (s : Fork f g) (m : s.pt ⟶ t.pt) (w : m ≫ t.ι = s.ι), m = lift s) : IsLimit t :=
   { lift
     fac := fun s j =>
       WalkingParallelPair.casesOn j (fac s) <| by
@@ -490,9 +490,9 @@ def Fork.IsLimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Fork f g)
 
 /-- This is a slightly more convenient method to verify that a cofork is a colimit cocone. It
     only asks for a proof of facts that carry any mathematical content -/
-def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.x ⟶ s.x)
+def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.pt)
     (fac : ∀ s : Cofork f g, Cofork.π t ≫ desc s = Cofork.π s)
-    (uniq : ∀ (s : Cofork f g) (m : t.x ⟶ s.x) (w : t.π ≫ m = s.π), m = desc s) : IsColimit t :=
+    (uniq : ∀ (s : Cofork f g) (m : t.pt ⟶ s.pt) (w : t.π ≫ m = s.π), m = desc s) : IsColimit t :=
   { desc
     fac := fun s j =>
       WalkingParallelPair.casesOn j (by erw [← s.w left, ← t.w left, category.assoc, fac] <;> rfl)
@@ -504,7 +504,8 @@ def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.x ⟶ s.x
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
 def Cofork.IsColimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Cofork f g)
-    (create : ∀ s : Cofork f g, { l : t.x ⟶ s.x // t.π ≫ l = s.π ∧ ∀ {m}, t.π ≫ m = s.π → m = l }) :
+    (create :
+      ∀ s : Cofork f g, { l : t.pt ⟶ s.pt // t.π ≫ l = s.π ∧ ∀ {m}, t.π ≫ m = s.π → m = l }) :
     IsColimit t :=
   Cofork.IsColimit.mk t (fun s => (create s).1) (fun s => (create s).2.1) fun s m w =>
     (create s).2.2 w
@@ -512,7 +513,7 @@ def Cofork.IsColimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Cofork f g)
 
 /-- Noncomputably make a limit cone from the existence of unique factorizations. -/
 def Fork.IsLimit.ofExistsUnique {t : Fork f g}
-    (hs : ∀ s : Fork f g, ∃! l : s.x ⟶ t.x, l ≫ Fork.ι t = Fork.ι s) : IsLimit t :=
+    (hs : ∀ s : Fork f g, ∃! l : s.pt ⟶ t.pt, l ≫ Fork.ι t = Fork.ι s) : IsLimit t :=
   by
   choose d hd hd' using hs
   exact fork.is_limit.mk _ d hd fun s m hm => hd' _ _ hm
@@ -520,7 +521,7 @@ def Fork.IsLimit.ofExistsUnique {t : Fork f g}
 
 /-- Noncomputably make a colimit cocone from the existence of unique factorizations. -/
 def Cofork.IsColimit.ofExistsUnique {t : Cofork f g}
-    (hs : ∀ s : Cofork f g, ∃! d : t.x ⟶ s.x, Cofork.π t ≫ d = Cofork.π s) : IsColimit t :=
+    (hs : ∀ s : Cofork f g, ∃! d : t.pt ⟶ s.pt, Cofork.π t ≫ d = Cofork.π s) : IsColimit t :=
   by
   choose d hd hd' using hs
   exact cofork.is_colimit.mk _ d hd fun s m hm => hd' _ _ hm
@@ -534,7 +535,7 @@ This is a special case of `is_limit.hom_iso'`, often useful to construct adjunct
 -/
 @[simps]
 def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t) (Z : C) :
-    (Z ⟶ t.x) ≃ { h : Z ⟶ X // h ≫ f = h ≫ g }
+    (Z ⟶ t.pt) ≃ { h : Z ⟶ X // h ≫ f = h ≫ g }
     where
   toFun k := ⟨k ≫ t.ι, by simp only [category.assoc, t.condition]⟩
   invFun h := (Fork.IsLimit.lift' ht _ h.Prop).1
@@ -544,7 +545,7 @@ def Fork.IsLimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t
 
 /-- The bijection of `fork.is_limit.hom_iso` is natural in `Z`. -/
 theorem Fork.IsLimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Fork f g} (ht : IsLimit t)
-    {Z Z' : C} (q : Z' ⟶ Z) (k : Z ⟶ t.x) :
+    {Z Z' : C} (q : Z' ⟶ Z) (k : Z ⟶ t.pt) :
     (Fork.IsLimit.homIso ht _ (q ≫ k) : Z' ⟶ X) = q ≫ (Fork.IsLimit.homIso ht _ k : Z ⟶ X) :=
   Category.assoc _ _ _
 #align category_theory.limits.fork.is_limit.hom_iso_natural CategoryTheory.Limits.Fork.IsLimit.homIso_natural
@@ -556,7 +557,7 @@ This is a special case of `is_colimit.hom_iso'`, often useful to construct adjun
 -/
 @[simps]
 def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsColimit t) (Z : C) :
-    (t.x ⟶ Z) ≃ { h : Y ⟶ Z // f ≫ h = g ≫ h }
+    (t.pt ⟶ Z) ≃ { h : Y ⟶ Z // f ≫ h = g ≫ h }
     where
   toFun k := ⟨t.π ≫ k, by simp only [← category.assoc, t.condition]⟩
   invFun h := (Cofork.IsColimit.desc' ht _ h.Prop).1
@@ -566,7 +567,7 @@ def Cofork.IsColimit.homIso {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} (ht : IsC
 
 /-- The bijection of `cofork.is_colimit.hom_iso` is natural in `Z`. -/
 theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f g} {Z Z' : C}
-    (q : Z ⟶ Z') (ht : IsColimit t) (k : t.x ⟶ Z) :
+    (q : Z ⟶ Z') (ht : IsColimit t) (k : t.pt ⟶ Z) :
     (Cofork.IsColimit.homIso ht _ (k ≫ q) : Y ⟶ Z') =
       (Cofork.IsColimit.homIso ht _ k : Y ⟶ Z) ≫ q :=
   (Category.assoc _ _ _).symm
@@ -581,7 +582,7 @@ theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f
     which you may find to be an easier way of achieving your goal. -/
 def Cone.ofFork {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map right)) : Cone F
     where
-  x := t.x
+  pt := t.pt
   π :=
     { app := fun X => t.π.app X ≫ eqToHom (by tidy)
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
@@ -597,7 +598,7 @@ def Cone.ofFork {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map ri
     achieving your goal. -/
 def Cocone.ofCofork {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map left) (F.map right)) : Cocone F
     where
-  x := t.x
+  pt := t.pt
   ι :=
     { app := fun X => eqToHom (by tidy) ≫ t.ι.app X
       naturality' := fun j j' g => by cases j <;> cases j' <;> cases g <;> dsimp <;> simp }
@@ -620,7 +621,7 @@ theorem Cocone.ofCofork_ι {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map le
     `F.map left` and `F.map right`. -/
 def Fork.ofCone {F : WalkingParallelPair ⥤ C} (t : Cone F) : Fork (F.map left) (F.map right)
     where
-  x := t.x
+  pt := t.pt
   π := { app := fun X => t.π.app X ≫ eqToHom (by tidy) }
 #align category_theory.limits.fork.of_cone CategoryTheory.Limits.Fork.ofCone
 
@@ -629,7 +630,7 @@ def Fork.ofCone {F : WalkingParallelPair ⥤ C} (t : Cone F) : Fork (F.map left)
     `F.map left` and `F.map right`. -/
 def Cofork.ofCocone {F : WalkingParallelPair ⥤ C} (t : Cocone F) : Cofork (F.map left) (F.map right)
     where
-  x := t.x
+  pt := t.pt
   ι := { app := fun X => eqToHom (by tidy) ≫ t.ι.app X }
 #align category_theory.limits.cofork.of_cocone CategoryTheory.Limits.Cofork.ofCocone
 
@@ -660,7 +661,7 @@ theorem Cofork.π_precompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parall
 /-- Helper function for constructing morphisms between equalizer forks.
 -/
 @[simps]
-def Fork.mkHom {s t : Fork f g} (k : s.x ⟶ t.x) (w : k ≫ t.ι = s.ι) : s ⟶ t
+def Fork.mkHom {s t : Fork f g} (k : s.pt ⟶ t.pt) (w : k ≫ t.ι = s.ι) : s ⟶ t
     where
   Hom := k
   w' := by
@@ -674,7 +675,7 @@ it suffices to give an isomorphism between the cone points
 and check that it commutes with the `ι` morphisms.
 -/
 @[simps]
-def Fork.ext {s t : Fork f g} (i : s.x ≅ t.x) (w : i.Hom ≫ t.ι = s.ι) : s ≅ t
+def Fork.ext {s t : Fork f g} (i : s.pt ≅ t.pt) (w : i.Hom ≫ t.ι = s.ι) : s ≅ t
     where
   Hom := Fork.mkHom i.Hom w
   inv := Fork.mkHom i.inv (by rw [← w, iso.inv_hom_id_assoc])
@@ -688,7 +689,7 @@ def Fork.isoForkOfι (c : Fork f g) : c ≅ Fork.ofι c.ι c.condition :=
 /-- Helper function for constructing morphisms between coequalizer coforks.
 -/
 @[simps]
-def Cofork.mkHom {s t : Cofork f g} (k : s.x ⟶ t.x) (w : s.π ≫ k = t.π) : s ⟶ t
+def Cofork.mkHom {s t : Cofork f g} (k : s.pt ⟶ t.pt) (w : s.π ≫ k = t.π) : s ⟶ t
     where
   Hom := k
   w' := by
@@ -710,7 +711,7 @@ it suffices to give an isomorphism between the cocone points
 and check that it commutes with the `π` morphisms.
 -/
 @[simps]
-def Cofork.ext {s t : Cofork f g} (i : s.x ≅ t.x) (w : s.π ≫ i.Hom = t.π) : s ≅ t
+def Cofork.ext {s t : Cofork f g} (i : s.pt ≅ t.pt) (w : s.π ≫ i.Hom = t.π) : s ≅ t
     where
   Hom := Cofork.mkHom i.Hom w
   inv := Cofork.mkHom i.inv (by rw [iso.comp_inv_eq, w])
@@ -749,7 +750,7 @@ abbrev equalizer.ι : equalizer f g ⟶ X :=
 /-- An equalizer cone for a parallel pair `f` and `g`.
 -/
 abbrev equalizer.fork : Fork f g :=
-  Limit.cone (parallelPair f g)
+  limit.cone (parallelPair f g)
 #align category_theory.limits.equalizer.fork CategoryTheory.Limits.equalizer.fork
 
 @[simp]
@@ -764,7 +765,7 @@ theorem equalizer.fork_π_app_zero : (equalizer.fork f g).π.app zero = equalize
 
 @[reassoc.1]
 theorem equalizer.condition : equalizer.ι f g ≫ f = equalizer.ι f g ≫ g :=
-  Fork.condition <| Limit.cone <| parallelPair f g
+  Fork.condition <| limit.cone <| parallelPair f g
 #align category_theory.limits.equalizer.condition CategoryTheory.Limits.equalizer.condition
 
 /-- The equalizer built from `equalizer.ι f g` is limiting. -/
@@ -929,7 +930,7 @@ abbrev coequalizer.π : Y ⟶ coequalizer f g :=
 /-- An arbitrary choice of coequalizer cocone for a parallel pair `f` and `g`.
 -/
 abbrev coequalizer.cofork : Cofork f g :=
-  Colimit.cocone (parallelPair f g)
+  colimit.cocone (parallelPair f g)
 #align category_theory.limits.coequalizer.cofork CategoryTheory.Limits.coequalizer.cofork
 
 @[simp]
@@ -944,7 +945,7 @@ theorem coequalizer.cofork_ι_app_one : (coequalizer.cofork f g).ι.app one = co
 
 @[reassoc.1]
 theorem coequalizer.condition : f ≫ coequalizer.π f g = g ≫ coequalizer.π f g :=
-  Cofork.condition <| Colimit.cocone <| parallelPair f g
+  Cofork.condition <| colimit.cocone <| parallelPair f g
 #align category_theory.limits.coequalizer.condition CategoryTheory.Limits.coequalizer.condition
 
 /-- The cofork built from `coequalizer.π f g` is colimiting. -/
@@ -1161,13 +1162,13 @@ abbrev HasCoequalizers :=
 /-- If `C` has all limits of diagrams `parallel_pair f g`, then it has all equalizers -/
 theorem hasEqualizers_of_hasLimit_parallelPair
     [∀ {X Y : C} {f g : X ⟶ Y}, HasLimit (parallelPair f g)] : HasEqualizers C :=
-  { HasLimit := fun F => hasLimit_of_iso (diagramIsoParallelPair F).symm }
+  { HasLimit := fun F => hasLimitOfIso (diagramIsoParallelPair F).symm }
 #align category_theory.limits.has_equalizers_of_has_limit_parallel_pair CategoryTheory.Limits.hasEqualizers_of_hasLimit_parallelPair
 
 /-- If `C` has all colimits of diagrams `parallel_pair f g`, then it has all coequalizers -/
 theorem hasCoequalizers_of_hasColimit_parallelPair
     [∀ {X Y : C} {f g : X ⟶ Y}, HasColimit (parallelPair f g)] : HasCoequalizers C :=
-  { HasColimit := fun F => hasColimit_of_iso (diagramIsoParallelPair F) }
+  { HasColimit := fun F => hasColimitOfIso (diagramIsoParallelPair F) }
 #align category_theory.limits.has_coequalizers_of_has_colimit_parallel_pair CategoryTheory.Limits.hasCoequalizers_of_hasColimit_parallelPair
 
 section

4698e35c

bump to nightly-2023-02-27-08

mathlib commit https://github.com/leanprover-community/mathlib/commit/eb0cb4511aaef0da2462207b67358a0e1fe1e2ee

91d8c210

Diff

@@ -474,10 +474,10 @@ def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.x ⟶ t.x)
     (fac : ∀ s : Fork f g, lift s ≫ Fork.ι t = Fork.ι s)
     (uniq : ∀ (s : Fork f g) (m : s.x ⟶ t.x) (w : m ≫ t.ι = s.ι), m = lift s) : IsLimit t :=
   { lift
-    fac' := fun s j =>
+    fac := fun s j =>
       WalkingParallelPair.casesOn j (fac s) <| by
         erw [← s.w left, ← t.w left, ← category.assoc, fac] <;> rfl
-    uniq' := fun s m j => by tidy }
+    uniq := fun s m j => by tidy }
 #align category_theory.limits.fork.is_limit.mk CategoryTheory.Limits.Fork.IsLimit.mk
 
 /-- This is another convenient method to verify that a fork is a limit cone. It
@@ -494,10 +494,10 @@ def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.x ⟶ s.x
     (fac : ∀ s : Cofork f g, Cofork.π t ≫ desc s = Cofork.π s)
     (uniq : ∀ (s : Cofork f g) (m : t.x ⟶ s.x) (w : t.π ≫ m = s.π), m = desc s) : IsColimit t :=
   { desc
-    fac' := fun s j =>
+    fac := fun s j =>
       WalkingParallelPair.casesOn j (by erw [← s.w left, ← t.w left, category.assoc, fac] <;> rfl)
         (fac s)
-    uniq' := by tidy }
+    uniq := by tidy }
 #align category_theory.limits.cofork.is_colimit.mk CategoryTheory.Limits.Cofork.IsColimit.mk
 
 /-- This is another convenient method to verify that a fork is a limit cone. It
@@ -1161,13 +1161,13 @@ abbrev HasCoequalizers :=
 /-- If `C` has all limits of diagrams `parallel_pair f g`, then it has all equalizers -/
 theorem hasEqualizers_of_hasLimit_parallelPair
     [∀ {X Y : C} {f g : X ⟶ Y}, HasLimit (parallelPair f g)] : HasEqualizers C :=
-  { HasLimit := fun F => hasLimitOfIso (diagramIsoParallelPair F).symm }
+  { HasLimit := fun F => hasLimit_of_iso (diagramIsoParallelPair F).symm }
 #align category_theory.limits.has_equalizers_of_has_limit_parallel_pair CategoryTheory.Limits.hasEqualizers_of_hasLimit_parallelPair
 
 /-- If `C` has all colimits of diagrams `parallel_pair f g`, then it has all coequalizers -/
 theorem hasCoequalizers_of_hasColimit_parallelPair
     [∀ {X Y : C} {f g : X ⟶ Y}, HasColimit (parallelPair f g)] : HasCoequalizers C :=
-  { HasColimit := fun F => hasColimitOfIso (diagramIsoParallelPair F) }
+  { HasColimit := fun F => hasColimit_of_iso (diagramIsoParallelPair F) }
 #align category_theory.limits.has_coequalizers_of_has_colimit_parallel_pair CategoryTheory.Limits.hasCoequalizers_of_hasColimit_parallelPair
 
 section

4698e35c

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

4698e35c

chore: adapt to multiple goal linter 1 (#12338)

A PR accompanying #12339.

Zulip discussion

45f93f3f

Diff

@@ -360,7 +360,10 @@ theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g 
 def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g where
   pt := P
   π :=
-    { app := fun X => by cases X; exact ι; exact ι ≫ f
+    { app := fun X => by
+        cases X
+        · exact ι
+        · exact ι ≫ f
       naturality := fun {X} {Y} f =>
         by cases X <;> cases Y <;> cases f <;> dsimp <;> simp; assumption }
 #align category_theory.limits.fork.of_ι CategoryTheory.Limits.Fork.ofι

4698e35c

feat(CategoryTheory/Sites): add some API for regular sheaves and the equalizer condition (#10420)

This PR gives an equivalent condition to regularTopology.EqualizerCondition (previously called regularCoverage.EqualizerCondition), phrased in more categorical language. We use this new condition to show that EqualizerCondition respects natural isomorphisms.

Co-authored-by: faenuccio <filippo.nuccio@univ-st-etienne.fr> Co-authored-by: Joël Riou <joel.riou@universite-paris-saclay.fr>

8d5f6cf4

Diff

@@ -692,11 +692,29 @@ def Fork.ext {s t : Fork f g} (i : s.pt ≅ t.pt) (w : i.hom ≫ t.ι = s.ι :=
   inv := Fork.mkHom i.inv (by rw [← w, Iso.inv_hom_id_assoc])
 #align category_theory.limits.fork.ext CategoryTheory.Limits.Fork.ext
 
+/-- Two forks of the form `ofι` are isomorphic whenever their `ι`'s are equal. -/
+def ForkOfι.ext {P : C} {ι ι' : P ⟶ X} (w : ι ≫ f = ι ≫ g) (w' : ι' ≫ f = ι' ≫ g) (h : ι = ι') :
+    Fork.ofι ι w ≅ Fork.ofι ι' w' :=
+  Fork.ext (Iso.refl _) (by simp [h])
+
 /-- Every fork is isomorphic to one of the form `Fork.of_ι _ _`. -/
 def Fork.isoForkOfι (c : Fork f g) : c ≅ Fork.ofι c.ι c.condition :=
   Fork.ext (by simp only [Fork.ofι_pt, Functor.const_obj_obj]; rfl) (by simp)
 #align category_theory.limits.fork.iso_fork_of_ι CategoryTheory.Limits.Fork.isoForkOfι
 
+/--
+Given two forks with isomorphic components in such a way that the natural diagrams commute, then if
+one is a limit, then the other one is as well.
+-/
+def Fork.isLimitOfIsos {X' Y' : C} (c : Fork f g) (hc : IsLimit c)
+    {f' g' : X' ⟶ Y'} (c' : Fork f' g')
+    (e₀ : X ≅ X') (e₁ : Y ≅ Y') (e : c.pt ≅ c'.pt)
+    (comm₁ : e₀.hom ≫ f' = f ≫ e₁.hom := by aesop_cat)
+    (comm₂ : e₀.hom ≫ g' = g ≫ e₁.hom := by aesop_cat)
+    (comm₃ : e.hom ≫ c'.ι = c.ι ≫ e₀.hom := by aesop_cat) : IsLimit c' :=
+  let i : parallelPair f g ≅ parallelPair f' g' := parallelPair.ext e₀ e₁ comm₁.symm comm₂.symm
+  (IsLimit.equivOfNatIsoOfIso i c c' (Fork.ext e comm₃)) hc
+
 /-- Helper function for constructing morphisms between coequalizer coforks.
 -/
 @[simps]

4698e35c

style: add missing spaces between a tactic name and its arguments (#11714)

After the (d)simp and rw tactics - hints to find further occurrences welcome.

zulip discussion

Co-authored-by: @sven-manthe

7151d90b

Diff

@@ -1115,7 +1115,7 @@ This is an isomorphism iff `G` preserves the equalizer of `f,g`; see
 noncomputable def equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
     G.obj (equalizer f g) ⟶ equalizer (G.map f) (G.map g) :=
   equalizer.lift (G.map (equalizer.ι _ _))
-    (by simp only [← G.map_comp]; rw[equalizer.condition])
+    (by simp only [← G.map_comp]; rw [equalizer.condition])
 #align category_theory.limits.equalizer_comparison CategoryTheory.Limits.equalizerComparison
 
 @[reassoc (attr := simp)]

4698e35c

chore(*): remove empty lines between variable statements (#11418)

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)

75c86f04

Diff

@@ -202,7 +202,6 @@ theorem walkingParallelPairOpEquiv_counitIso_one :
 #align category_theory.limits.walking_parallel_pair_op_equiv_counit_iso_one CategoryTheory.Limits.walkingParallelPairOpEquiv_counitIso_one
 
 variable {C : Type u} [Category.{v} C]
-
 variable {X Y : C}
 
 /-- `parallelPair f g` is the diagram in `C` consisting of the two morphisms `f` and `g` with

4698e35c

style: homogenise porting notes (#11145)

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".

8be0b69c

Diff

@@ -436,7 +436,7 @@ theorem Cofork.IsColimit.π_desc {s t : Cofork f g} (hs : IsColimit s) : s.π 
   hs.fac _ _
 #align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_desc
 
--- porting note: `Fork.IsLimit.lift` was added in order to ease the port
+-- Porting note: `Fork.IsLimit.lift` was added in order to ease the port
 /-- If `s` is a limit fork over `f` and `g`, then a morphism `k : W ⟶ X` satisfying
     `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ s.pt` such that `l ≫ fork.ι s = k`. -/
 def Fork.IsLimit.lift {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
@@ -455,7 +455,7 @@ def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h
   ⟨Fork.IsLimit.lift hs k h, by simp⟩
 #align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'
 
--- porting note: `Cofork.IsColimit.desc` was added in order to ease the port
+-- Porting note: `Cofork.IsColimit.desc` was added in order to ease the port
 /-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
     `f ≫ k = g ≫ k` induces a morphism `l : s.pt ⟶ W` such that `cofork.π s ≫ l = k`. -/
 def Cofork.IsColimit.desc {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)

4698e35c

chore: classify simp can do this porting notes (#10619)

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

de765f60

Diff

@@ -794,7 +794,7 @@ noncomputable abbrev equalizer.lift {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g
   limit.lift (parallelPair f g) (Fork.ofι k h)
 #align category_theory.limits.equalizer.lift CategoryTheory.Limits.equalizer.lift
 
--- Porting note: removed simp since simp can prove this and the reassoc version
+-- Porting note (#10618): removed simp since simp can prove this and the reassoc version
 @[reassoc]
 theorem equalizer.lift_ι {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
     equalizer.lift k h ≫ equalizer.ι f g = k :=
@@ -949,7 +949,7 @@ theorem coequalizer.cofork_π : (coequalizer.cofork f g).π = coequalizer.π f g
   rfl
 #align category_theory.limits.coequalizer.cofork_π CategoryTheory.Limits.coequalizer.cofork_π
 
--- Porting note: simp can prove this, simp removed
+-- Porting note (#10618): simp can prove this, simp removed
 theorem coequalizer.cofork_ι_app_one : (coequalizer.cofork f g).ι.app one = coequalizer.π f g :=
   rfl
 #align category_theory.limits.coequalizer.cofork_ι_app_one CategoryTheory.Limits.coequalizer.cofork_ι_app_one
@@ -974,7 +974,7 @@ noncomputable abbrev coequalizer.desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫
   colimit.desc (parallelPair f g) (Cofork.ofπ k h)
 #align category_theory.limits.coequalizer.desc CategoryTheory.Limits.coequalizer.desc
 
--- Porting note: removing simp since simp can prove this and reassoc version
+-- Porting note (#10618): removing simp since simp can prove this and reassoc version
 @[reassoc]
 theorem coequalizer.π_desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) :
     coequalizer.π f g ≫ coequalizer.desc k h = k :=

4698e35c

chore: space after ← (#8178)

Co-authored-by: Moritz Firsching <firsching@google.com>

5fb9beab

Diff

@@ -1228,7 +1228,7 @@ variable {C f g}
 /-- The fork obtained by postcomposing an equalizer fork with a monomorphism is an equalizer. -/
 def isEqualizerCompMono {c : Fork f g} (i : IsLimit c) {Z : C} (h : Y ⟶ Z) [hm : Mono h] :
     have : Fork.ι c ≫ f ≫ h = Fork.ι c ≫ g ≫ h := by
-      simp only [←Category.assoc]
+      simp only [← Category.assoc]
       exact congrArg (· ≫ h) c.condition;
     IsLimit (Fork.ofι c.ι (by simp [this]) : Fork (f ≫ h) (g ≫ h)) :=
   Fork.IsLimit.mk' _ fun s =>

4698e35c

chore: cleanup some spaces (#7484)

Purely cosmetic PR.

c93575a3

Diff

@@ -169,7 +169,7 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
   counitIso :=
     NatIso.ofComponents (fun j => eqToIso (by
             induction' j with X
-            cases X <;> rfl ))
+            cases X <;> rfl))
       (fun {i} {j} f => by
       induction' i with i
       induction' j with j

4698e35c

chore: exactly 4 spaces in subsequent lines for def (#7321)

Co-authored-by: Moritz Firsching <firsching@google.com>

11dbfb2b

Diff

@@ -85,7 +85,7 @@ open WalkingParallelPairHom
 
 /-- Composition of morphisms in the indexing diagram for (co)equalizers. -/
 def WalkingParallelPairHom.comp :
-  -- Porting note: changed X Y Z to implicit to match comp fields in precategory
+    -- Porting note: changed X Y Z to implicit to match comp fields in precategory
     ∀ { X Y Z : WalkingParallelPair } (_ : WalkingParallelPairHom X Y)
       (_ : WalkingParallelPairHom Y Z), WalkingParallelPairHom X Z
   | _, _, _, id _, h => h

4698e35c

chore: replace ConeMorphism.Hom by ConeMorphism.hom (#7176)

3e44bb07

Diff

@@ -674,7 +674,7 @@ theorem Cofork.π_precompose {f' g' : X ⟶ Y} {α : parallelPair f g ⟶ parall
 -/
 @[simps]
 def Fork.mkHom {s t : Fork f g} (k : s.pt ⟶ t.pt) (w : k ≫ t.ι = s.ι) : s ⟶ t where
-  Hom := k
+  hom := k
   w := by
     rintro ⟨_ | _⟩
     · exact w
@@ -702,7 +702,7 @@ def Fork.isoForkOfι (c : Fork f g) : c ≅ Fork.ofι c.ι c.condition :=
 -/
 @[simps]
 def Cofork.mkHom {s t : Cofork f g} (k : s.pt ⟶ t.pt) (w : s.π ≫ k = t.π) : s ⟶ t where
-  Hom := k
+  hom := k
   w := by
     rintro ⟨_ | _⟩
     · simp [Cofork.app_zero_eq_comp_π_left, w]
@@ -710,12 +710,12 @@ def Cofork.mkHom {s t : Cofork f g} (k : s.pt ⟶ t.pt) (w : s.π ≫ k = t.π)
 #align category_theory.limits.cofork.mk_hom CategoryTheory.Limits.Cofork.mkHom
 
 @[reassoc (attr := simp)]
-theorem Fork.hom_comp_ι {s t : Fork f g} (f : s ⟶ t) : f.Hom ≫ t.ι = s.ι := by
+theorem Fork.hom_comp_ι {s t : Fork f g} (f : s ⟶ t) : f.hom ≫ t.ι = s.ι := by
   cases s; cases t; cases f; aesop
 #align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ι
 
 @[reassoc (attr := simp)]
-theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.π := by
+theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.hom = t.π := by
   cases s; cases t; cases f; aesop
 #align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_hom

4698e35c

style: a linter for colons (#6761)

A linter that throws on seeing a colon at the start of a line, according to the style guideline that says these operators should go before linebreaks.

69a3de31

Diff

@@ -523,8 +523,8 @@ def Cofork.IsColimit.mk (t : Cofork f g) (desc : ∀ s : Cofork f g, t.pt ⟶ s.
     only asks for a proof of facts that carry any mathematical content, and allows access to the
     same `s` for all parts. -/
 def Cofork.IsColimit.mk' {X Y : C} {f g : X ⟶ Y} (t : Cofork f g)
-    (create : ∀ s : Cofork f g, { l : t.pt ⟶ s.pt // t.π ≫ l = s.π ∧ ∀ {m}, t.π ≫ m = s.π → m = l })
-    : IsColimit t :=
+    (create : ∀ s : Cofork f g, { l : t.pt ⟶ s.pt // t.π ≫ l = s.π
+                                    ∧ ∀ {m}, t.π ≫ m = s.π → m = l }) : IsColimit t :=
   Cofork.IsColimit.mk t (fun s => (create s).1) (fun s => (create s).2.1) fun s _ w =>
     (create s).2.2 w
 #align category_theory.limits.cofork.is_colimit.mk' CategoryTheory.Limits.Cofork.IsColimit.mk'

4698e35c

chore: fix grammar mistakes (#6121)

a16538af

Diff

@@ -808,8 +808,7 @@ noncomputable def equalizer.lift' {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g)
   ⟨equalizer.lift k h, equalizer.lift_ι _ _⟩
 #align category_theory.limits.equalizer.lift' CategoryTheory.Limits.equalizer.lift'
 
-/-- Two maps into an equalizer are equal if they are are equal when composed with the equalizer
-    map. -/
+/-- Two maps into an equalizer are equal if they are equal when composed with the equalizer map. -/
 @[ext]
 theorem equalizer.hom_ext {W : C} {k l : W ⟶ equalizer f g}
     (h : k ≫ equalizer.ι f g = l ≫ equalizer.ι f g) : k = l :=

4698e35c

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

depends on: #5966

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

89aa3a3b

Diff

@@ -2,15 +2,12 @@
 Copyright (c) 2018 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison, Markus Himmel
-
-! This file was ported from Lean 3 source module category_theory.limits.shapes.equalizers
-! leanprover-community/mathlib commit 4698e35ca56a0d4fa53aa5639c3364e0a77f4eba
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.EpiMono
 import Mathlib.CategoryTheory.Limits.HasLimits
 
+#align_import category_theory.limits.shapes.equalizers from "leanprover-community/mathlib"@"4698e35ca56a0d4fa53aa5639c3364e0a77f4eba"
+
 /-!
 # Equalizers and coequalizers

4698e35c

chore: cleanup whitespace (#5988)

Grepping for [^ .:{-] [^ :] and reviewing the results. Once I started I couldn't stop. :-)

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

12343aa5

Diff

@@ -406,7 +406,7 @@ theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫
     ∀ j : WalkingParallelPair, k ≫ s.π.app j = l ≫ s.π.app j
   | zero => h
   | one => by
-    have : k ≫ ι s ≫ f = l ≫ ι s ≫  f := by
+    have : k ≫ ι s ≫ f = l ≫ ι s ≫ f := by
       simp only [← Category.assoc]; exact congrArg (· ≫ f) h
     rw [s.app_one_eq_ι_comp_left, this]
 #align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_ext

4698e35c

feat: more consistent use of ext, and updating porting notes. (#5242)

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

dbae2f17

Diff

@@ -915,7 +915,7 @@ theorem equalizer.isoSourceOfSelf_hom : (equalizer.isoSourceOfSelf f).hom = equa
 @[simp]
 theorem equalizer.isoSourceOfSelf_inv :
     (equalizer.isoSourceOfSelf f).inv = equalizer.lift (𝟙 X) (by simp) := by
-  apply equalizer.hom_ext
+  ext
   simp [equalizer.isoSourceOfSelf]
 #align category_theory.limits.equalizer.iso_source_of_self_inv CategoryTheory.Limits.equalizer.isoSourceOfSelf_inv
 
@@ -1100,7 +1100,7 @@ noncomputable def coequalizer.isoTargetOfSelf : coequalizer f f ≅ Y :=
 @[simp]
 theorem coequalizer.isoTargetOfSelf_hom :
     (coequalizer.isoTargetOfSelf f).hom = coequalizer.desc (𝟙 Y) (by simp) := by
-  apply coequalizer.hom_ext
+  ext
   simp [coequalizer.isoTargetOfSelf]
 #align category_theory.limits.coequalizer.iso_target_of_self_hom CategoryTheory.Limits.coequalizer.isoTargetOfSelf_hom

4698e35c

chore: formatting issues (#4947)

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

5068808d

Diff

@@ -97,16 +97,18 @@ def WalkingParallelPairHom.comp :
 #align category_theory.limits.walking_parallel_pair_hom.comp CategoryTheory.Limits.WalkingParallelPairHom.comp
 
 -- Porting note: adding these since they are simple and aesop couldn't directly prove them
-theorem WalkingParallelPairHom.id_comp {X Y : WalkingParallelPair} (g : WalkingParallelPairHom X Y):
-    comp (id X) g = g := rfl
+theorem WalkingParallelPairHom.id_comp
+    {X Y : WalkingParallelPair} (g : WalkingParallelPairHom X Y) : comp (id X) g = g :=
+  rfl
 
-theorem WalkingParallelPairHom.comp_id {X Y : WalkingParallelPair} (f : WalkingParallelPairHom X Y):
-    comp f (id Y) = f := by cases f <;> rfl
+theorem WalkingParallelPairHom.comp_id
+    {X Y : WalkingParallelPair} (f : WalkingParallelPairHom X Y) : comp f (id Y) = f := by
+  cases f <;> rfl
 
 theorem WalkingParallelPairHom.assoc {X Y Z W : WalkingParallelPair}
     (f : WalkingParallelPairHom X Y) (g: WalkingParallelPairHom Y Z)
     (h : WalkingParallelPairHom Z W) : comp (comp f g) h = comp f (comp g h) := by
-    cases f <;> cases g <;> cases h <;> rfl
+  cases f <;> cases g <;> cases h <;> rfl
 
 instance walkingParallelPairHomCategory : SmallCategory WalkingParallelPair where
   Hom := WalkingParallelPairHom

4698e35c

chore: add space after exacts (#4945)

Too often tempted to change these during other PRs, so doing a mass edit here.

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

bf799bb9

Diff

@@ -131,10 +131,10 @@ theorem WalkingParallelPairHom.id.sizeOf_spec' (X : WalkingParallelPair) :
 right.
 -/
 def walkingParallelPairOp : WalkingParallelPair ⥤ WalkingParallelPairᵒᵖ where
-  obj x := op <| by cases x; exacts[one, zero]
+  obj x := op <| by cases x; exacts [one, zero]
   map f := by
     cases f <;> apply Quiver.Hom.op
-    exacts[left, right, WalkingParallelPairHom.id _]
+    exacts [left, right, WalkingParallelPairHom.id _]
   map_comp := by rintro _ _ _ (_|_|_) g <;> cases g <;> rfl
 #align category_theory.limits.walking_parallel_pair_op CategoryTheory.Limits.walkingParallelPairOp

4698e35c

chore: review of automation in category theory (#4793)

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>

5b958613

Diff

@@ -169,11 +169,11 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
       (by rintro _ _ (_ | _ | _) <;> simp)
   counitIso :=
     NatIso.ofComponents (fun j => eqToIso (by
-            induction' j using Opposite.rec with X
+            induction' j with X
             cases X <;> rfl ))
       (fun {i} {j} f => by
-      induction' i using Opposite.rec with i
-      induction' j using Opposite.rec with j
+      induction' i with i
+      induction' j with j
       let g := f.unop
       have : f = g.op := rfl
       rw [this]
@@ -249,7 +249,7 @@ theorem parallelPair_functor_obj {F : WalkingParallelPair ⥤ C} (j : WalkingPar
 @[simps!]
 def diagramIsoParallelPair (F : WalkingParallelPair ⥤ C) :
     F ≅ parallelPair (F.map left) (F.map right) :=
-  (NatIso.ofComponents fun j => eqToIso <| by cases j <;> rfl) <| by rintro _ _ (_|_|_) <;> simp
+  NatIso.ofComponents (fun j => eqToIso <| by cases j <;> rfl) (by rintro _ _ (_|_|_) <;> simp)
 #align category_theory.limits.diagram_iso_parallel_pair CategoryTheory.Limits.diagramIsoParallelPair
 
 /-- Construct a morphism between parallel pairs. -/
@@ -287,7 +287,7 @@ def parallelPair.ext {F G : WalkingParallelPair ⥤ C} (zero : F.obj zero ≅ G.
   NatIso.ofComponents
     (by
       rintro ⟨j⟩
-      exacts[zero, one])
+      exacts [zero, one])
     (by rintro _ _ ⟨_⟩ <;> simp [left, right])
 #align category_theory.limits.parallel_pair.ext CategoryTheory.Limits.parallelPair.ext
 
@@ -688,7 +688,8 @@ it suffices to give an isomorphism between the cone points
 and check that it commutes with the `ι` morphisms.
 -/
 @[simps]
-def Fork.ext {s t : Fork f g} (i : s.pt ≅ t.pt) (w : i.hom ≫ t.ι = s.ι) : s ≅ t where
+def Fork.ext {s t : Fork f g} (i : s.pt ≅ t.pt) (w : i.hom ≫ t.ι = s.ι := by aesop_cat) :
+    s ≅ t where
   hom := Fork.mkHom i.hom w
   inv := Fork.mkHom i.inv (by rw [← w, Iso.inv_hom_id_assoc])
 #align category_theory.limits.fork.ext CategoryTheory.Limits.Fork.ext
@@ -724,8 +725,8 @@ it suffices to give an isomorphism between the cocone points
 and check that it commutes with the `π` morphisms.
 -/
 @[simps]
-def Cofork.ext {s t : Cofork f g} (i : s.pt ≅ t.pt) (w : s.π ≫ i.hom = t.π) : s ≅ t
-    where
+def Cofork.ext {s t : Cofork f g} (i : s.pt ≅ t.pt) (w : s.π ≫ i.hom = t.π := by aesop_cat) :
+    s ≅ t where
   hom := Cofork.mkHom i.hom w
   inv := Cofork.mkHom i.inv (by rw [Iso.comp_inv_eq, w])
 #align category_theory.limits.cofork.ext CategoryTheory.Limits.Cofork.ext

4698e35c

chore: fix typos (#4518)

I ran codespell Mathlib and got tired halfway through the suggestions.

92beef58

Diff

@@ -122,7 +122,7 @@ theorem walkingParallelPairHom_id (X : WalkingParallelPair) : WalkingParallelPai
   rfl
 #align category_theory.limits.walking_parallel_pair_hom_id CategoryTheory.Limits.walkingParallelPairHom_id
 
--- Porting note: simpNF asked me to do this becasue the LHS of the non-primed version reduced
+-- Porting note: simpNF asked me to do this because the LHS of the non-primed version reduced
 @[simp]
 theorem WalkingParallelPairHom.id.sizeOf_spec' (X : WalkingParallelPair) :
     (WalkingParallelPairHom._sizeOf_inst X X).sizeOf (𝟙 X) = 1 + sizeOf X := by cases X <;> rfl

4698e35c

chore: fix simps projections in CategoryTheory.Monad.Basic (#3269)

This fixes a regression of @[simps] to @[simp] from #2969, per zulip.

There are a few incidental changes to @[simps] arguments in this PR, just removing arguments that had no effect on behaviour.

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

12c8e4f9

Diff

@@ -489,7 +489,7 @@ theorem Cofork.IsColimit.existsUnique {s : Cofork f g} (hs : IsColimit s) {W : C
 
 /-- This is a slightly more convenient method to verify that a fork is a limit cone. It
     only asks for a proof of facts that carry any mathematical content -/
-@[simps lift]
+@[simps]
 def Fork.IsLimit.mk (t : Fork f g) (lift : ∀ s : Fork f g, s.pt ⟶ t.pt)
     (fac : ∀ s : Fork f g, lift s ≫ Fork.ι t = Fork.ι s)
     (uniq : ∀ (s : Fork f g) (m : s.pt ⟶ t.pt) (_ : m ≫ t.ι = s.ι), m = lift s) : IsLimit t :=

4698e35c

chore: tidy various files (#3483)

dcd5622e

Diff

@@ -314,7 +314,7 @@ variable {f g : X ⟶ Y}
 /-- A fork `t` on the parallel pair `f g : X ⟶ Y` consists of two morphisms
     `t.π.app zero : t.pt ⟶ X`
     and `t.π.app one : t.pt ⟶ Y`. Of these, only the first one is interesting, and we give it the
-    shorter name `fork.ι t`. -/
+    shorter name `Fork.ι t`. -/
 def Fork.ι (t : Fork f g) :=
   t.π.app zero
 #align category_theory.limits.fork.ι CategoryTheory.Limits.Fork.ι
@@ -326,7 +326,7 @@ theorem Fork.app_zero_eq_ι (t : Fork f g) : t.π.app zero = t.ι :=
 
 /-- A cofork `t` on the parallelPair `f g : X ⟶ Y` consists of two morphisms
     `t.ι.app zero : X ⟶ t.pt` and `t.ι.app one : Y ⟶ t.pt`. Of these, only the second one is
-    interesting, and we give it the shorter name `cofork.π t`. -/
+    interesting, and we give it the shorter name `Cofork.π t`. -/
 def Cofork.π (t : Cofork f g) :=
   t.ι.app one
 #align category_theory.limits.cofork.π CategoryTheory.Limits.Cofork.π
@@ -359,8 +359,7 @@ theorem Cofork.app_zero_eq_comp_π_right (s : Cofork f g) : s.ι.app zero = g 
 /-- A fork on `f g : X ⟶ Y` is determined by the morphism `ι : P ⟶ X` satisfying `ι ≫ f = ι ≫ g`.
 -/
 @[simps]
-def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g
-    where
+def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g where
   pt := P
   π :=
     { app := fun X => by cases X; exact ι; exact ι ≫ f
@@ -371,8 +370,7 @@ def Fork.ofι {P : C} (ι : P ⟶ X) (w : ι ≫ f = ι ≫ g) : Fork f g
 /-- A cofork on `f g : X ⟶ Y` is determined by the morphism `π : Y ⟶ P` satisfying
     `f ≫ π = g ≫ π`. -/
 @[simps]
-def Cofork.ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : Cofork f g
-    where
+def Cofork.ofπ {P : C} (π : Y ⟶ P) (w : f ≫ π = g ≫ π) : Cofork f g where
   pt := P
   ι :=
     { app := fun X => WalkingParallelPair.casesOn X (f ≫ π) π
@@ -595,7 +593,7 @@ theorem Cofork.IsColimit.homIso_natural {X Y : C} {f g : X ⟶ Y} {t : Cofork f
     `parallelPair (F.map left) (F.map right)`, and a fork on `F.map left` and `F.map right`,
     we get a cone on `F`.
 
-    If you're thinking about using this, have a look at `has_equalizers_of_has_limit_parallel_pair`,
+    If you're thinking about using this, have a look at `hasEqualizers_of_hasLimit_parallelPair`,
     which you may find to be an easier way of achieving your goal. -/
 def Cone.ofFork {F : WalkingParallelPair ⥤ C} (t : Fork (F.map left) (F.map right)) : Cone F
     where
@@ -732,7 +730,7 @@ def Cofork.ext {s t : Cofork f g} (i : s.pt ≅ t.pt) (w : s.π ≫ i.hom = t.π
   inv := Cofork.mkHom i.inv (by rw [Iso.comp_inv_eq, w])
 #align category_theory.limits.cofork.ext CategoryTheory.Limits.Cofork.ext
 
-/-- Every cofork is isomorphic to one of the form `cofork.of_π _ _`. -/
+/-- Every cofork is isomorphic to one of the form `Cofork.ofπ _ _`. -/
 def Cofork.isoCoforkOfπ (c : Cofork f g) : c ≅ Cofork.ofπ c.π c.condition :=
   Cofork.ext (by simp only [Cofork.ofπ_pt, Functor.const_obj_obj]; rfl) (by dsimp; simp)
 #align category_theory.limits.cofork.iso_cofork_of_π CategoryTheory.Limits.Cofork.isoCoforkOfπ
@@ -852,8 +850,7 @@ def idFork (h : f = g) : Fork f g :=
 
 /-- The identity on `X` is an equalizer of `(f, g)`, if `f = g`. -/
 def isLimitIdFork (h : f = g) : IsLimit (idFork h) :=
-  Fork.IsLimit.mk _ (fun s => Fork.ι s) (fun s => Category.comp_id _) fun s m h =>
-    by
+  Fork.IsLimit.mk _ (fun s => Fork.ι s) (fun s => Category.comp_id _) fun s m h => by
     convert h
     exact (Category.comp_id _).symm
 #align category_theory.limits.is_limit_id_fork CategoryTheory.Limits.isLimitIdFork
@@ -1042,8 +1039,7 @@ def idCofork (h : f = g) : Cofork f g :=
 
 /-- The identity on `Y` is a coequalizer of `(f, g)`, where `f = g`.  -/
 def isColimitIdCofork (h : f = g) : IsColimit (idCofork h) :=
-  Cofork.IsColimit.mk _ (fun s => Cofork.π s) (fun s => Category.id_comp _) fun s m h =>
-    by
+  Cofork.IsColimit.mk _ (fun s => Cofork.π s) (fun s => Category.id_comp _) fun s m h => by
     convert h
     exact (Category.id_comp _).symm
 #align category_theory.limits.is_colimit_id_cofork CategoryTheory.Limits.isColimitIdCofork

4698e35c

feat: port CategoryTheory.Limits.Shapes.KernelPair (#2871)

1bd50665

Diff

@@ -439,18 +439,42 @@ theorem Cofork.IsColimit.π_desc {s t : Cofork f g} (hs : IsColimit s) : s.π 
   hs.fac _ _
 #align category_theory.limits.cofork.is_colimit.π_desc CategoryTheory.Limits.Cofork.IsColimit.π_desc
 
+-- porting note: `Fork.IsLimit.lift` was added in order to ease the port
+/-- If `s` is a limit fork over `f` and `g`, then a morphism `k : W ⟶ X` satisfying
+    `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ s.pt` such that `l ≫ fork.ι s = k`. -/
+def Fork.IsLimit.lift {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
+    W ⟶ s.pt :=
+  hs.lift (Fork.ofι _ h)
+
+@[reassoc (attr := simp)]
+lemma Fork.IsLimit.lift_ι' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
+    Fork.IsLimit.lift hs k h ≫ Fork.ι s = k :=
+    hs.fac _ _
+
 /-- If `s` is a limit fork over `f` and `g`, then a morphism `k : W ⟶ X` satisfying
     `k ≫ f = k ≫ g` induces a morphism `l : W ⟶ s.pt` such that `l ≫ fork.ι s = k`. -/
 def Fork.IsLimit.lift' {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
     { l : W ⟶ s.pt // l ≫ Fork.ι s = k } :=
-  ⟨hs.lift <| Fork.ofι _ h, hs.fac _ _⟩
+  ⟨Fork.IsLimit.lift hs k h, by simp⟩
 #align category_theory.limits.fork.is_limit.lift' CategoryTheory.Limits.Fork.IsLimit.lift'
 
+-- porting note: `Cofork.IsColimit.desc` was added in order to ease the port
+/-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
+    `f ≫ k = g ≫ k` induces a morphism `l : s.pt ⟶ W` such that `cofork.π s ≫ l = k`. -/
+def Cofork.IsColimit.desc {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
+    (h : f ≫ k = g ≫ k) : s.pt ⟶ W :=
+  hs.desc (Cofork.ofπ _ h)
+
+@[reassoc (attr := simp)]
+lemma Cofork.IsColimit.π_desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
+    (h : f ≫ k = g ≫ k) : Cofork.π s ≫ Cofork.IsColimit.desc hs k h = k :=
+  hs.fac _ _
+
 /-- If `s` is a colimit cofork over `f` and `g`, then a morphism `k : Y ⟶ W` satisfying
     `f ≫ k = g ≫ k` induces a morphism `l : s.pt ⟶ W` such that `cofork.π s ≫ l = k`. -/
 def Cofork.IsColimit.desc' {s : Cofork f g} (hs : IsColimit s) {W : C} (k : Y ⟶ W)
     (h : f ≫ k = g ≫ k) : { l : s.pt ⟶ W // Cofork.π s ≫ l = k } :=
-  ⟨hs.desc <| Cofork.ofπ _ h, hs.fac _ _⟩
+  ⟨Cofork.IsColimit.desc hs k h, by simp⟩
 #align category_theory.limits.cofork.is_colimit.desc' CategoryTheory.Limits.Cofork.IsColimit.desc'
 
 theorem Fork.IsLimit.existsUnique {s : Fork f g} (hs : IsLimit s) {W : C} (k : W ⟶ X)

4698e35c

chore: strip trailing spaces in lean files (#2828)

vscode is already configured by .vscode/settings.json to trim these on save. It's not clear how they've managed to stick around.

By doing this all in one PR now, it avoids getting random whitespace diffs in PRs later.

This was done with a regex search in vscode,

6ceb5945

Diff

@@ -48,7 +48,7 @@ general limits can be used.
 * [F. Borceux, *Handbook of Categorical Algebra 1*][borceux-vol1]
 -/
 
-/- Porting note: removed global noncomputable since there are things that might be 
+/- Porting note: removed global noncomputable since there are things that might be
 computable value like WalkingPair -/
 section
 
@@ -77,9 +77,9 @@ inductive WalkingParallelPairHom : WalkingParallelPair → WalkingParallelPair 
   deriving DecidableEq
 #align category_theory.limits.walking_parallel_pair_hom CategoryTheory.Limits.WalkingParallelPairHom
 
-/- Porting note: this simplifies using walkingParallelPairHom_id; replacement is below; 
+/- Porting note: this simplifies using walkingParallelPairHom_id; replacement is below;
 simpNF still complains of striking this from the simp list -/
-attribute [-simp, nolint simpNF] WalkingParallelPairHom.id.sizeOf_spec 
+attribute [-simp, nolint simpNF] WalkingParallelPairHom.id.sizeOf_spec
 
 /-- Satisfying the inhabited linter -/
 instance : Inhabited (WalkingParallelPairHom zero one) where default := WalkingParallelPairHom.left
@@ -89,7 +89,7 @@ open WalkingParallelPairHom
 /-- Composition of morphisms in the indexing diagram for (co)equalizers. -/
 def WalkingParallelPairHom.comp :
   -- Porting note: changed X Y Z to implicit to match comp fields in precategory
-    ∀ { X Y Z : WalkingParallelPair } (_ : WalkingParallelPairHom X Y) 
+    ∀ { X Y Z : WalkingParallelPair } (_ : WalkingParallelPairHom X Y)
       (_ : WalkingParallelPairHom Y Z), WalkingParallelPairHom X Z
   | _, _, _, id _, h => h
   | _, _, _, left, id one => left
@@ -98,15 +98,15 @@ def WalkingParallelPairHom.comp :
 
 -- Porting note: adding these since they are simple and aesop couldn't directly prove them
 theorem WalkingParallelPairHom.id_comp {X Y : WalkingParallelPair} (g : WalkingParallelPairHom X Y):
-    comp (id X) g = g := rfl 
+    comp (id X) g = g := rfl
 
 theorem WalkingParallelPairHom.comp_id {X Y : WalkingParallelPair} (f : WalkingParallelPairHom X Y):
-    comp f (id Y) = f := by cases f <;> rfl  
+    comp f (id Y) = f := by cases f <;> rfl
 
-theorem WalkingParallelPairHom.assoc {X Y Z W : WalkingParallelPair} 
-    (f : WalkingParallelPairHom X Y) (g: WalkingParallelPairHom Y Z) 
-    (h : WalkingParallelPairHom Z W) : comp (comp f g) h = comp f (comp g h) := by 
-    cases f <;> cases g <;> cases h <;> rfl 
+theorem WalkingParallelPairHom.assoc {X Y Z W : WalkingParallelPair}
+    (f : WalkingParallelPairHom X Y) (g: WalkingParallelPairHom Y Z)
+    (h : WalkingParallelPairHom Z W) : comp (comp f g) h = comp f (comp g h) := by
+    cases f <;> cases g <;> cases h <;> rfl
 
 instance walkingParallelPairHomCategory : SmallCategory WalkingParallelPair where
   Hom := WalkingParallelPairHom
@@ -123,9 +123,9 @@ theorem walkingParallelPairHom_id (X : WalkingParallelPair) : WalkingParallelPai
 #align category_theory.limits.walking_parallel_pair_hom_id CategoryTheory.Limits.walkingParallelPairHom_id
 
 -- Porting note: simpNF asked me to do this becasue the LHS of the non-primed version reduced
-@[simp] 
-theorem WalkingParallelPairHom.id.sizeOf_spec' (X : WalkingParallelPair) : 
-    (WalkingParallelPairHom._sizeOf_inst X X).sizeOf (𝟙 X) = 1 + sizeOf X := by cases X <;> rfl 
+@[simp]
+theorem WalkingParallelPairHom.id.sizeOf_spec' (X : WalkingParallelPair) :
+    (WalkingParallelPairHom._sizeOf_inst X X).sizeOf (𝟙 X) = 1 + sizeOf X := by cases X <;> rfl
 
 /-- The functor `WalkingParallelPair ⥤ WalkingParallelPairᵒᵖ` sending left to left and right to
 right.
@@ -168,9 +168,9 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
     NatIso.ofComponents (fun j => eqToIso (by cases j <;> rfl))
       (by rintro _ _ (_ | _ | _) <;> simp)
   counitIso :=
-    NatIso.ofComponents (fun j => eqToIso (by 
-            induction' j using Opposite.rec with X 
-            cases X <;> rfl )) 
+    NatIso.ofComponents (fun j => eqToIso (by
+            induction' j using Opposite.rec with X
+            cases X <;> rfl ))
       (fun {i} {j} f => by
       induction' i using Opposite.rec with i
       induction' j using Opposite.rec with j
@@ -178,7 +178,7 @@ def walkingParallelPairOpEquiv : WalkingParallelPair ≌ WalkingParallelPairᵒ
       have : f = g.op := rfl
       rw [this]
       cases i <;> cases j <;> cases g <;> rfl)
-  functor_unitIso_comp := fun j => by cases j <;> rfl  
+  functor_unitIso_comp := fun j => by cases j <;> rfl
 #align category_theory.limits.walking_parallel_pair_op_equiv CategoryTheory.Limits.walkingParallelPairOpEquiv
 
 @[simp]
@@ -213,7 +213,7 @@ def parallelPair (f g : X ⟶ Y) : WalkingParallelPair ⥤ C where
     match x with
     | zero => X
     | one => Y
-  map h := 
+  map h :=
     match h with
     | WalkingParallelPairHom.id _ => 𝟙 _
     | left => f
@@ -249,7 +249,7 @@ theorem parallelPair_functor_obj {F : WalkingParallelPair ⥤ C} (j : WalkingPar
 @[simps!]
 def diagramIsoParallelPair (F : WalkingParallelPair ⥤ C) :
     F ≅ parallelPair (F.map left) (F.map right) :=
-  (NatIso.ofComponents fun j => eqToIso <| by cases j <;> rfl) <| by rintro _ _ (_|_|_) <;> simp 
+  (NatIso.ofComponents fun j => eqToIso <| by cases j <;> rfl) <| by rintro _ _ (_|_|_) <;> simp
 #align category_theory.limits.diagram_iso_parallel_pair CategoryTheory.Limits.diagramIsoParallelPair
 
 /-- Construct a morphism between parallel pairs. -/
@@ -311,7 +311,7 @@ abbrev Cofork (f g : X ⟶ Y) :=
 
 variable {f g : X ⟶ Y}
 
-/-- A fork `t` on the parallel pair `f g : X ⟶ Y` consists of two morphisms 
+/-- A fork `t` on the parallel pair `f g : X ⟶ Y` consists of two morphisms
     `t.π.app zero : t.pt ⟶ X`
     and `t.π.app one : t.pt ⟶ Y`. Of these, only the first one is interesting, and we give it the
     shorter name `fork.ι t`. -/
@@ -405,9 +405,9 @@ theorem Cofork.condition (t : Cofork f g) : f ≫ t.π = g ≫ t.π := by
 theorem Fork.equalizer_ext (s : Fork f g) {W : C} {k l : W ⟶ s.pt} (h : k ≫ s.ι = l ≫ s.ι) :
     ∀ j : WalkingParallelPair, k ≫ s.π.app j = l ≫ s.π.app j
   | zero => h
-  | one => by 
-    have : k ≫ ι s ≫ f = l ≫ ι s ≫  f := by 
-      simp only [← Category.assoc]; exact congrArg (· ≫ f) h 
+  | one => by
+    have : k ≫ ι s ≫ f = l ≫ ι s ≫  f := by
+      simp only [← Category.assoc]; exact congrArg (· ≫ f) h
     rw [s.app_one_eq_ι_comp_left, this]
 #align category_theory.limits.fork.equalizer_ext CategoryTheory.Limits.Fork.equalizer_ext
 
@@ -613,7 +613,7 @@ theorem Cocone.ofCofork_ι {F : WalkingParallelPair ⥤ C} (t : Cofork (F.map le
 def Fork.ofCone {F : WalkingParallelPair ⥤ C} (t : Cone F) : Fork (F.map left) (F.map right)
     where
   pt := t.pt
-  π := { app := fun X => t.π.app X ≫ eqToHom (by aesop) 
+  π := { app := fun X => t.π.app X ≫ eqToHom (by aesop)
          naturality := by rintro _ _ (_|_|_) <;> {dsimp; simp}}
 #align category_theory.limits.fork.of_cone CategoryTheory.Limits.Fork.ofCone
 
@@ -658,7 +658,7 @@ def Fork.mkHom {s t : Fork f g} (k : s.pt ⟶ t.pt) (w : k ≫ t.ι = s.ι) : s
     rintro ⟨_ | _⟩
     · exact w
     · simp only [Fork.app_one_eq_ι_comp_left,← Category.assoc]
-      congr 
+      congr
 #align category_theory.limits.fork.mk_hom CategoryTheory.Limits.Fork.mkHom
 
 /-- To construct an isomorphism between forks,
@@ -689,12 +689,12 @@ def Cofork.mkHom {s t : Cofork f g} (k : s.pt ⟶ t.pt) (w : s.π ≫ k = t.π)
 
 @[reassoc (attr := simp)]
 theorem Fork.hom_comp_ι {s t : Fork f g} (f : s ⟶ t) : f.Hom ≫ t.ι = s.ι := by
-  cases s; cases t; cases f; aesop 
+  cases s; cases t; cases f; aesop
 #align category_theory.limits.fork.hom_comp_ι CategoryTheory.Limits.Fork.hom_comp_ι
 
 @[reassoc (attr := simp)]
-theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.π := by 
-  cases s; cases t; cases f; aesop 
+theorem Fork.π_comp_hom {s t : Cofork f g} (f : s ⟶ t) : s.π ≫ f.Hom = t.π := by
+  cases s; cases t; cases f; aesop
 #align category_theory.limits.fork.π_comp_hom CategoryTheory.Limits.Fork.π_comp_hom
 
 /-- To construct an isomorphism between coforks,
@@ -759,7 +759,7 @@ theorem equalizer.condition : equalizer.ι f g ≫ f = equalizer.ι f g ≫ g :=
 #align category_theory.limits.equalizer.condition CategoryTheory.Limits.equalizer.condition
 
 /-- The equalizer built from `equalizer.ι f g` is limiting. -/
-noncomputable def equalizerIsEqualizer : IsLimit (Fork.ofι (equalizer.ι f g) 
+noncomputable def equalizerIsEqualizer : IsLimit (Fork.ofι (equalizer.ι f g)
     (equalizer.condition f g)) :=
   IsLimit.ofIsoLimit (limit.isLimit _) (Fork.ext (Iso.refl _) (by aesop))
 #align category_theory.limits.equalizer_is_equalizer CategoryTheory.Limits.equalizerIsEqualizer
@@ -800,7 +800,7 @@ theorem equalizer.existsUnique {W : C} (k : W ⟶ X) (h : k ≫ f = k ≫ g) :
 #align category_theory.limits.equalizer.exists_unique CategoryTheory.Limits.equalizer.existsUnique
 
 /-- An equalizer morphism is a monomorphism -/
-instance equalizer.ι_mono : Mono (equalizer.ι f g) where 
+instance equalizer.ι_mono : Mono (equalizer.ι f g) where
   right_cancellation _ _ w := equalizer.hom_ext w
 #align category_theory.limits.equalizer.ι_mono CategoryTheory.Limits.equalizer.ι_mono
 
@@ -949,7 +949,7 @@ variable {f g}
 
 /-- Any morphism `k : Y ⟶ W` satisfying `f ≫ k = g ≫ k` factors through the coequalizer of `f`
     and `g` via `coequalizer.desc : coequalizer f g ⟶ W`. -/
-noncomputable abbrev coequalizer.desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) : 
+noncomputable abbrev coequalizer.desc {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) :
     coequalizer f g ⟶ W :=
   colimit.desc (parallelPair f g) (Cofork.ofπ k h)
 #align category_theory.limits.coequalizer.desc CategoryTheory.Limits.coequalizer.desc
@@ -990,7 +990,7 @@ theorem coequalizer.existsUnique {W : C} (k : Y ⟶ W) (h : f ≫ k = g ≫ k) :
 #align category_theory.limits.coequalizer.exists_unique CategoryTheory.Limits.coequalizer.existsUnique
 
 /-- A coequalizer morphism is an epimorphism -/
-instance coequalizer.π_epi : Epi (coequalizer.π f g) where 
+instance coequalizer.π_epi : Epi (coequalizer.π f g) where
   left_cancellation _ _ w := coequalizer.hom_ext w
 #align category_theory.limits.coequalizer.π_epi CategoryTheory.Limits.coequalizer.π_epi
 
@@ -1096,7 +1096,7 @@ This is an isomorphism iff `G` preserves the equalizer of `f,g`; see
 -/
 noncomputable def equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f) (G.map g)] :
     G.obj (equalizer f g) ⟶ equalizer (G.map f) (G.map g) :=
-  equalizer.lift (G.map (equalizer.ι _ _)) 
+  equalizer.lift (G.map (equalizer.ι _ _))
     (by simp only [← G.map_comp]; rw[equalizer.condition])
 #align category_theory.limits.equalizer_comparison CategoryTheory.Limits.equalizerComparison
 
@@ -1118,7 +1118,7 @@ theorem map_lift_equalizerComparison [HasEqualizer f g] [HasEqualizer (G.map f)
 /-- The comparison morphism for the coequalizer of `f,g`. -/
 noncomputable def coequalizerComparison [HasCoequalizer f g] [HasCoequalizer (G.map f) (G.map g)] :
     coequalizer (G.map f) (G.map g) ⟶ G.obj (coequalizer f g) :=
-  coequalizer.desc (G.map (coequalizer.π _ _)) 
+  coequalizer.desc (G.map (coequalizer.π _ _))
     (by simp only [← G.map_comp]; rw [coequalizer.condition])
 #align category_theory.limits.coequalizer_comparison CategoryTheory.Limits.coequalizerComparison
 
@@ -1171,7 +1171,7 @@ variable {C} [IsSplitMono f]
 /-- A split mono `f` equalizes `(retraction f ≫ f)` and `(𝟙 Y)`.
 Here we build the cone, and show in `isSplitMonoEqualizes` that it is a limit cone.
 -/
--- @[simps (config := { rhsMd := semireducible })] Porting note: no semireducible 
+-- @[simps (config := { rhsMd := semireducible })] Porting note: no semireducible
 @[simps!]
 noncomputable def coneOfIsSplitMono : Fork (𝟙 Y) (retraction f ≫ f) :=
   Fork.ofι f (by simp)
@@ -1184,7 +1184,7 @@ theorem coneOfIsSplitMono_ι : (coneOfIsSplitMono f).ι = f :=
 
 /-- A split mono `f` equalizes `(retraction f ≫ f)` and `(𝟙 Y)`.
 -/
-noncomputable def isSplitMonoEqualizes {X Y : C} (f : X ⟶ Y) [IsSplitMono f] : 
+noncomputable def isSplitMonoEqualizes {X Y : C} (f : X ⟶ Y) [IsSplitMono f] :
     IsLimit (coneOfIsSplitMono f) :=
   Fork.IsLimit.mk' _ fun s =>
     ⟨s.ι ≫ retraction f, by
@@ -1208,9 +1208,9 @@ variable {C f g}
 
 /-- The fork obtained by postcomposing an equalizer fork with a monomorphism is an equalizer. -/
 def isEqualizerCompMono {c : Fork f g} (i : IsLimit c) {Z : C} (h : Y ⟶ Z) [hm : Mono h] :
-    have : Fork.ι c ≫ f ≫ h = Fork.ι c ≫ g ≫ h := by 
-      simp only [←Category.assoc] 
-      exact congrArg (· ≫ h) c.condition; 
+    have : Fork.ι c ≫ f ≫ h = Fork.ι c ≫ g ≫ h := by
+      simp only [←Category.assoc]
+      exact congrArg (· ≫ h) c.condition;
     IsLimit (Fork.ofι c.ι (by simp [this]) : Fork (f ≫ h) (g ≫ h)) :=
   Fork.IsLimit.mk' _ fun s =>
     let s' : Fork f g := Fork.ofι s.ι (by apply hm.right_cancellation; simp [s.condition])
@@ -1240,7 +1240,7 @@ def splitMonoOfIdempotentOfIsLimitFork {X : C} {f : X ⟶ X} (hf : f ≫ f = f)
 #align category_theory.limits.split_mono_of_idempotent_of_is_limit_fork CategoryTheory.Limits.splitMonoOfIdempotentOfIsLimitFork
 
 /-- The equalizer of an idempotent morphism and the identity is split mono. -/
-noncomputable def splitMonoOfIdempotentEqualizer {X : C} {f : X ⟶ X} (hf : f ≫ f = f) 
+noncomputable def splitMonoOfIdempotentEqualizer {X : C} {f : X ⟶ X} (hf : f ≫ f = f)
     [HasEqualizer (𝟙 X) f] : SplitMono (equalizer.ι (𝟙 X) f) :=
   splitMonoOfIdempotentOfIsLimitFork _ hf (limit.isLimit _)
 #align category_theory.limits.split_mono_of_idempotent_equalizer CategoryTheory.Limits.splitMonoOfIdempotentEqualizer
@@ -1266,7 +1266,7 @@ theorem coconeOfIsSplitEpi_π : (coconeOfIsSplitEpi f).π = f :=
 
 /-- A split epi `f` coequalizes `(f ≫ section_ f)` and `(𝟙 X)`.
 -/
-noncomputable def isSplitEpiCoequalizes {X Y : C} (f : X ⟶ Y) [IsSplitEpi f] : 
+noncomputable def isSplitEpiCoequalizes {X Y : C} (f : X ⟶ Y) [IsSplitEpi f] :
     IsColimit (coconeOfIsSplitEpi f) :=
   Cofork.IsColimit.mk' _ fun s =>
     ⟨section_ f ≫ s.π, by
@@ -1294,9 +1294,9 @@ variable {C f g}
 /-- The cofork obtained by precomposing a coequalizer cofork with an epimorphism is
 a coequalizer. -/
 def isCoequalizerEpiComp {c : Cofork f g} (i : IsColimit c) {W : C} (h : W ⟶ X) [hm : Epi h] :
-    have : (h ≫ f) ≫ Cofork.π c = (h ≫ g) ≫ Cofork.π c := by 
+    have : (h ≫ f) ≫ Cofork.π c = (h ≫ g) ≫ Cofork.π c := by
       simp only [Category.assoc]
-      exact congrArg (h ≫ ·) c.condition 
+      exact congrArg (h ≫ ·) c.condition
     IsColimit (Cofork.ofπ c.π (this) : Cofork (h ≫ f) (h ≫ g)) :=
   Cofork.IsColimit.mk' _ fun s =>
     let s' : Cofork f g :=
@@ -1327,10 +1327,9 @@ def splitEpiOfIdempotentOfIsColimitCofork {X : C} {f : X ⟶ X} (hf : f ≫ f =
 #align category_theory.limits.split_epi_of_idempotent_of_is_colimit_cofork CategoryTheory.Limits.splitEpiOfIdempotentOfIsColimitCofork
 
 /-- The coequalizer of an idempotent morphism and the identity is split epi. -/
-noncomputable def splitEpiOfIdempotentCoequalizer {X : C} {f : X ⟶ X} (hf : f ≫ f = f) 
+noncomputable def splitEpiOfIdempotentCoequalizer {X : C} {f : X ⟶ X} (hf : f ≫ f = f)
     [HasCoequalizer (𝟙 X) f] : SplitEpi (coequalizer.π (𝟙 X) f) :=
   splitEpiOfIdempotentOfIsColimitCofork _ hf (colimit.isColimit _)
 #align category_theory.limits.split_epi_of_idempotent_coequalizer CategoryTheory.Limits.splitEpiOfIdempotentCoequalizer
 
 end CategoryTheory.Limits
-

4698e35c

feat: port CategoryTheory.Limits.Shapes.Equalizers (#2562)

49552cd3

`category_theory.limits.shapes.equalizers` ⟷ `Mathlib.CategoryTheory.Limits.Shapes.Equalizers`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 73

category_theory.limits.shapes.equalizers ⟷ Mathlib.CategoryTheory.Limits.Shapes.Equalizers

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 73

`category_theory.limits.shapes.equalizers` ⟷ `Mathlib.CategoryTheory.Limits.Shapes.Equalizers`