category_theory.sites.compatible_plus | Mathlib porting status

Changes since the initial port

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

Changes in mathlib3

70fd9563

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

7e5137f5

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) 2021 Adam Topaz. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Adam Topaz
 -/
-import Mathbin.CategoryTheory.Sites.Whiskering
-import Mathbin.CategoryTheory.Sites.Plus
+import CategoryTheory.Sites.Whiskering
+import CategoryTheory.Sites.Plus
 
 #align_import category_theory.sites.compatible_plus from "leanprover-community/mathlib"@"7e5137f579de09a059a5ce98f364a04e221aabf0"

7e5137f5

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) 2021 Adam Topaz. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Adam Topaz
-
-! This file was ported from Lean 3 source module category_theory.sites.compatible_plus
-! leanprover-community/mathlib commit 7e5137f579de09a059a5ce98f364a04e221aabf0
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Sites.Whiskering
 import Mathbin.CategoryTheory.Sites.Plus
 
+#align_import category_theory.sites.compatible_plus from "leanprover-community/mathlib"@"7e5137f579de09a059a5ce98f364a04e221aabf0"
+
 /-!
 > THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
 > Any changes to this file require a corresponding PR to mathlib4.

7e5137f5

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -53,6 +53,7 @@ variable [∀ (X : C) (W : J.cover X) (P : Cᵒᵖ ⥤ D), PreservesLimit (W.ind
 
 variable (P : Cᵒᵖ ⥤ D)
 
+#print CategoryTheory.GrothendieckTopology.diagramCompIso /-
 /-- The diagram used to define `P⁺`, composed with `F`, is isomorphic
 to the diagram used to define `P ⋙ F`. -/
 def diagramCompIso (X : C) : J.diagram P X ⋙ F ≅ J.diagram (P ⋙ F) X :=
@@ -72,7 +73,9 @@ def diagramCompIso (X : C) : J.diagram P X ⋙ F ≅ J.diagram (P ⋙ F) X :=
         category.assoc]
       simp only [← F.map_comp, multiequalizer.lift_ι])
 #align category_theory.grothendieck_topology.diagram_comp_iso CategoryTheory.GrothendieckTopology.diagramCompIso
+-/
 
+#print CategoryTheory.GrothendieckTopology.diagramCompIso_hom_ι /-
 @[simp, reassoc]
 theorem diagramCompIso_hom_ι (X : C) (W : (J.cover X)ᵒᵖ) (i : W.unop.arrow) :
     (J.diagramCompIso F P X).Hom.app W ≫ Multiequalizer.ι _ i = F.map (Multiequalizer.ι _ _) :=
@@ -81,6 +84,7 @@ theorem diagramCompIso_hom_ι (X : C) (W : (J.cover X)ᵒᵖ) (i : W.unop.arrow)
   dsimp
   simp
 #align category_theory.grothendieck_topology.diagram_comp_iso_hom_ι CategoryTheory.GrothendieckTopology.diagramCompIso_hom_ι
+-/
 
 variable [∀ X : C, HasColimitsOfShape (J.cover X)ᵒᵖ D]
 
@@ -88,6 +92,7 @@ variable [∀ X : C, HasColimitsOfShape (J.cover X)ᵒᵖ E]
 
 variable [∀ X : C, PreservesColimitsOfShape (J.cover X)ᵒᵖ F]
 
+#print CategoryTheory.GrothendieckTopology.plusCompIso /-
 /-- The isomorphism between `P⁺ ⋙ F` and `(P ⋙ F)⁺`. -/
 def plusCompIso : J.plusObj P ⋙ F ≅ J.plusObj (P ⋙ F) :=
   NatIso.ofComponents
@@ -127,7 +132,9 @@ def plusCompIso : J.plusObj P ⋙ F ≅ J.plusObj (P ⋙ F) :=
       erw [multiequalizer.lift_ι, diagram_comp_iso_hom_ι, diagram_comp_iso_hom_ι, ← F.map_comp,
         multiequalizer.lift_ι])
 #align category_theory.grothendieck_topology.plus_comp_iso CategoryTheory.GrothendieckTopology.plusCompIso
+-/
 
+#print CategoryTheory.GrothendieckTopology.ι_plusCompIso_hom /-
 @[simp, reassoc]
 theorem ι_plusCompIso_hom (X) (W) :
     F.map (colimit.ι _ W) ≫ (J.plusCompIso F P).Hom.app X =
@@ -145,7 +152,9 @@ theorem ι_plusCompIso_hom (X) (W) :
     category.assoc, iso.trans_hom, iso.cancel_iso_hom_left, nat_iso.of_components_hom_app,
     colimit.cocone_ι, category.assoc, has_colimit.iso_of_nat_iso_ι_hom]
 #align category_theory.grothendieck_topology.ι_plus_comp_iso_hom CategoryTheory.GrothendieckTopology.ι_plusCompIso_hom
+-/
 
+#print CategoryTheory.GrothendieckTopology.plusCompIso_whiskerLeft /-
 @[simp, reassoc]
 theorem plusCompIso_whiskerLeft {F G : D ⥤ E} (η : F ⟶ G) (P : Cᵒᵖ ⥤ D)
     [∀ X : C, PreservesColimitsOfShape (J.cover X)ᵒᵖ F]
@@ -167,7 +176,9 @@ theorem plusCompIso_whiskerLeft {F G : D ⥤ E} (η : F ⟶ G) (P : Cᵒᵖ ⥤
   dsimp
   simpa
 #align category_theory.grothendieck_topology.plus_comp_iso_whisker_left CategoryTheory.GrothendieckTopology.plusCompIso_whiskerLeft
+-/
 
+#print CategoryTheory.GrothendieckTopology.plusFunctorWhiskerLeftIso /-
 /-- The isomorphism between `P⁺ ⋙ F` and `(P ⋙ F)⁺`, functorially in `F`. -/
 @[simps hom_app inv_app]
 def plusFunctorWhiskerLeftIso (P : Cᵒᵖ ⥤ D)
@@ -177,7 +188,9 @@ def plusFunctorWhiskerLeftIso (P : Cᵒᵖ ⥤ D)
     (whiskeringLeft _ _ E).obj (J.plusObj P) ≅ (whiskeringLeft _ _ _).obj P ⋙ J.plusFunctor E :=
   NatIso.ofComponents (fun X => plusCompIso _ _ _) fun F G η => plusCompIso_whiskerLeft _ _ _
 #align category_theory.grothendieck_topology.plus_functor_whisker_left_iso CategoryTheory.GrothendieckTopology.plusFunctorWhiskerLeftIso
+-/
 
+#print CategoryTheory.GrothendieckTopology.plusCompIso_whiskerRight /-
 @[simp, reassoc]
 theorem plusCompIso_whiskerRight {P Q : Cᵒᵖ ⥤ D} (η : P ⟶ Q) :
     whiskerRight (J.plusMap η) F ≫ (J.plusCompIso F Q).Hom =
@@ -202,7 +215,9 @@ theorem plusCompIso_whiskerRight {P Q : Cᵒᵖ ⥤ D} (η : P ⟶ Q) :
     category.assoc]
   simp only [← F.map_comp, multiequalizer.lift_ι]
 #align category_theory.grothendieck_topology.plus_comp_iso_whisker_right CategoryTheory.GrothendieckTopology.plusCompIso_whiskerRight
+-/
 
+#print CategoryTheory.GrothendieckTopology.plusFunctorWhiskerRightIso /-
 /-- The isomorphism between `P⁺ ⋙ F` and `(P ⋙ F)⁺`, functorially in `P`. -/
 @[simps hom_app inv_app]
 def plusFunctorWhiskerRightIso :
@@ -210,7 +225,9 @@ def plusFunctorWhiskerRightIso :
       (whiskeringRight _ _ _).obj F ⋙ J.plusFunctor E :=
   NatIso.ofComponents (fun P => J.plusCompIso _ _) fun P Q η => plusCompIso_whiskerRight _ _ _
 #align category_theory.grothendieck_topology.plus_functor_whisker_right_iso CategoryTheory.GrothendieckTopology.plusFunctorWhiskerRightIso
+-/
 
+#print CategoryTheory.GrothendieckTopology.whiskerRight_toPlus_comp_plusCompIso_hom /-
 @[simp, reassoc]
 theorem whiskerRight_toPlus_comp_plusCompIso_hom :
     whiskerRight (J.toPlus _) _ ≫ (J.plusCompIso F P).Hom = J.toPlus _ :=
@@ -226,16 +243,21 @@ theorem whiskerRight_toPlus_comp_plusCompIso_hom :
   erw [multiequalizer.lift_ι, multiequalizer.lift_ι]
   rfl
 #align category_theory.grothendieck_topology.whisker_right_to_plus_comp_plus_comp_iso_hom CategoryTheory.GrothendieckTopology.whiskerRight_toPlus_comp_plusCompIso_hom
+-/
 
+#print CategoryTheory.GrothendieckTopology.toPlus_comp_plusCompIso_inv /-
 @[simp]
 theorem toPlus_comp_plusCompIso_inv :
     J.toPlus _ ≫ (J.plusCompIso F P).inv = whiskerRight (J.toPlus _) _ := by simp [iso.comp_inv_eq]
 #align category_theory.grothendieck_topology.to_plus_comp_plus_comp_iso_inv CategoryTheory.GrothendieckTopology.toPlus_comp_plusCompIso_inv
+-/
 
+#print CategoryTheory.GrothendieckTopology.plusCompIso_inv_eq_plusLift /-
 theorem plusCompIso_inv_eq_plusLift (hP : Presheaf.IsSheaf J (J.plusObj P ⋙ F)) :
     (J.plusCompIso F P).inv = J.plusLift (whiskerRight (J.toPlus _) _) hP := by
   apply J.plus_lift_unique; simp [iso.comp_inv_eq]
 #align category_theory.grothendieck_topology.plus_comp_iso_inv_eq_plus_lift CategoryTheory.GrothendieckTopology.plusCompIso_inv_eq_plusLift
+-/
 
 end CategoryTheory.GrothendieckTopology

7e5137f5

bump to nightly-2023-06-09-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/7e5137f579de09a059a5ce98f364a04e221aabf0

fe176e9b

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Adam Topaz
 
 ! This file was ported from Lean 3 source module category_theory.sites.compatible_plus
-! leanprover-community/mathlib commit 70fd9563a21e7b963887c9360bd29b2393e6225a
+! leanprover-community/mathlib commit 7e5137f579de09a059a5ce98f364a04e221aabf0
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -12,6 +12,9 @@ import Mathbin.CategoryTheory.Sites.Whiskering
 import Mathbin.CategoryTheory.Sites.Plus
 
 /-!
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 
 In this file, we prove that the plus functor is compatible with functors which
 preserve the correct limits and colimits.

70fd9563

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -230,10 +230,8 @@ theorem toPlus_comp_plusCompIso_inv :
 #align category_theory.grothendieck_topology.to_plus_comp_plus_comp_iso_inv CategoryTheory.GrothendieckTopology.toPlus_comp_plusCompIso_inv
 
 theorem plusCompIso_inv_eq_plusLift (hP : Presheaf.IsSheaf J (J.plusObj P ⋙ F)) :
-    (J.plusCompIso F P).inv = J.plusLift (whiskerRight (J.toPlus _) _) hP :=
-  by
-  apply J.plus_lift_unique
-  simp [iso.comp_inv_eq]
+    (J.plusCompIso F P).inv = J.plusLift (whiskerRight (J.toPlus _) _) hP := by
+  apply J.plus_lift_unique; simp [iso.comp_inv_eq]
 #align category_theory.grothendieck_topology.plus_comp_iso_inv_eq_plus_lift CategoryTheory.GrothendieckTopology.plusCompIso_inv_eq_plusLift
 
 end CategoryTheory.GrothendieckTopology

70fd9563

bump to nightly-2023-05-23-03

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

ed98987c

Diff

@@ -70,7 +70,7 @@ def diagramCompIso (X : C) : J.diagram P X ⋙ F ≅ J.diagram (P ⋙ F) X :=
       simp only [← F.map_comp, multiequalizer.lift_ι])
 #align category_theory.grothendieck_topology.diagram_comp_iso CategoryTheory.GrothendieckTopology.diagramCompIso
 
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem diagramCompIso_hom_ι (X : C) (W : (J.cover X)ᵒᵖ) (i : W.unop.arrow) :
     (J.diagramCompIso F P X).Hom.app W ≫ Multiequalizer.ι _ i = F.map (Multiequalizer.ι _ _) :=
   by
@@ -125,7 +125,7 @@ def plusCompIso : J.plusObj P ⋙ F ≅ J.plusObj (P ⋙ F) :=
         multiequalizer.lift_ι])
 #align category_theory.grothendieck_topology.plus_comp_iso CategoryTheory.GrothendieckTopology.plusCompIso
 
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem ι_plusCompIso_hom (X) (W) :
     F.map (colimit.ι _ W) ≫ (J.plusCompIso F P).Hom.app X =
       (J.diagramCompIso F P X.unop).Hom.app W ≫ colimit.ι _ W :=
@@ -143,7 +143,7 @@ theorem ι_plusCompIso_hom (X) (W) :
     colimit.cocone_ι, category.assoc, has_colimit.iso_of_nat_iso_ι_hom]
 #align category_theory.grothendieck_topology.ι_plus_comp_iso_hom CategoryTheory.GrothendieckTopology.ι_plusCompIso_hom
 
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem plusCompIso_whiskerLeft {F G : D ⥤ E} (η : F ⟶ G) (P : Cᵒᵖ ⥤ D)
     [∀ X : C, PreservesColimitsOfShape (J.cover X)ᵒᵖ F]
     [∀ (X : C) (W : J.cover X) (P : Cᵒᵖ ⥤ D), PreservesLimit (W.index P).multicospan F]
@@ -175,7 +175,7 @@ def plusFunctorWhiskerLeftIso (P : Cᵒᵖ ⥤ D)
   NatIso.ofComponents (fun X => plusCompIso _ _ _) fun F G η => plusCompIso_whiskerLeft _ _ _
 #align category_theory.grothendieck_topology.plus_functor_whisker_left_iso CategoryTheory.GrothendieckTopology.plusFunctorWhiskerLeftIso
 
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem plusCompIso_whiskerRight {P Q : Cᵒᵖ ⥤ D} (η : P ⟶ Q) :
     whiskerRight (J.plusMap η) F ≫ (J.plusCompIso F Q).Hom =
       (J.plusCompIso F P).Hom ≫ J.plusMap (whiskerRight η F) :=
@@ -208,7 +208,7 @@ def plusFunctorWhiskerRightIso :
   NatIso.ofComponents (fun P => J.plusCompIso _ _) fun P Q η => plusCompIso_whiskerRight _ _ _
 #align category_theory.grothendieck_topology.plus_functor_whisker_right_iso CategoryTheory.GrothendieckTopology.plusFunctorWhiskerRightIso
 
-@[simp, reassoc.1]
+@[simp, reassoc]
 theorem whiskerRight_toPlus_comp_plusCompIso_hom :
     whiskerRight (J.toPlus _) _ ≫ (J.plusCompIso F P).Hom = J.toPlus _ :=
   by

70fd9563

bump to nightly-2023-03-23-20

mathlib commit https://github.com/leanprover-community/mathlib/commit/57e09a1296bfb4330ddf6624f1028ba186117d82

53b827ba

Diff

@@ -72,7 +72,7 @@ def diagramCompIso (X : C) : J.diagram P X ⋙ F ≅ J.diagram (P ⋙ F) X :=
 
 @[simp, reassoc.1]
 theorem diagramCompIso_hom_ι (X : C) (W : (J.cover X)ᵒᵖ) (i : W.unop.arrow) :
-    (J.diagramCompIso F P X).Hom.app W ≫ multiequalizer.ι _ i = F.map (multiequalizer.ι _ _) :=
+    (J.diagramCompIso F P X).Hom.app W ≫ Multiequalizer.ι _ i = F.map (Multiequalizer.ι _ _) :=
   by
   delta diagram_comp_iso
   dsimp

70fd9563

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

70fd9563

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

@@ -30,7 +30,6 @@ variable {C : Type u} [Category.{v} C] (J : GrothendieckTopology C)
 variable {D : Type w₁} [Category.{max v u} D]
 variable {E : Type w₂} [Category.{max v u} E]
 variable (F : D ⥤ E)
-
 variable [∀ (α β : Type max v u) (fst snd : β → α), HasLimitsOfShape (WalkingMulticospan fst snd) D]
 variable [∀ (α β : Type max v u) (fst snd : β → α), HasLimitsOfShape (WalkingMulticospan fst snd) E]
 variable [∀ (X : C) (W : J.Cover X) (P : Cᵒᵖ ⥤ D), PreservesLimit (W.index P).multicospan F]

70fd9563

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

@@ -46,7 +46,7 @@ def diagramCompIso (X : C) : J.diagram P X ⋙ F ≅ J.diagram (P ⋙ F) X :=
         (isLimitOfPreserves F (limit.isLimit _)).conePointUniqueUpToIso (limit.isLimit _))
     (by
       intro A B f
-      -- porting note: this used to work with `ext`
+      -- Porting note: this used to work with `ext`
       -- See https://github.com/leanprover-community/mathlib4/issues/5229
       apply Multiequalizer.hom_ext
       dsimp
@@ -145,7 +145,7 @@ theorem plusCompIso_whiskerLeft {F G : D ⥤ E} (η : F ⟶ G) (P : Cᵒᵖ ⥤
     NatTrans.naturality_assoc, GrothendieckTopology.diagramNatTrans_app]
   simp only [← Category.assoc]
   congr 1
-  -- porting note: this used to work with `ext`
+  -- Porting note: this used to work with `ext`
   -- See https://github.com/leanprover-community/mathlib4/issues/5229
   apply Multiequalizer.hom_ext
   intro a
@@ -182,7 +182,7 @@ theorem plusCompIso_whiskerRight {P Q : Cᵒᵖ ⥤ D} (η : P ⟶ Q) :
   simp only [Functor.map_comp, Category.assoc, ι_plusCompIso_hom]
   simp only [← Category.assoc]
   congr 1
-  -- porting note: this used to work with `ext`
+  -- Porting note: this used to work with `ext`
   -- See https://github.com/leanprover-community/mathlib4/issues/5229
   apply Multiequalizer.hom_ext
   intro a
@@ -208,7 +208,7 @@ theorem whiskerRight_toPlus_comp_plusCompIso_hom :
   simp only [ι_plusCompIso_hom, Functor.map_comp, Category.assoc]
   simp only [← Category.assoc]
   congr 1
-  -- porting note: this used to work with `ext`
+  -- Porting note: this used to work with `ext`
   -- See https://github.com/leanprover-community/mathlib4/issues/5229
   apply Multiequalizer.hom_ext
   delta Cover.toMultiequalizer

70fd9563

chore: only four spaces for subsequent lines (#7286)

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

0c7d6fa5

Diff

@@ -60,7 +60,7 @@ def diagramCompIso (X : C) : J.diagram P X ⋙ F ≅ J.diagram (P ⋙ F) X :=
 
 @[reassoc (attr := simp)]
 theorem diagramCompIso_hom_ι (X : C) (W : (J.Cover X)ᵒᵖ) (i : W.unop.Arrow) :
-  (J.diagramCompIso F P X).hom.app W ≫ Multiequalizer.ι ((unop W).index (P ⋙ F)) i =
+    (J.diagramCompIso F P X).hom.app W ≫ Multiequalizer.ι ((unop W).index (P ⋙ F)) i =
   F.map (Multiequalizer.ι _ _) := by
   delta diagramCompIso
   dsimp

70fd9563

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

3e44bb07

Diff

@@ -117,7 +117,7 @@ theorem ι_plusCompIso_hom (X) (W) :
     F.map (colimit.ι _ W) ≫ (J.plusCompIso F P).hom.app X =
       (J.diagramCompIso F P X.unop).hom.app W ≫ colimit.ι _ W := by
   delta diagramCompIso plusCompIso
-  simp only [IsColimit.descCoconeMorphism_Hom, IsColimit.uniqueUpToIso_hom,
+  simp only [IsColimit.descCoconeMorphism_hom, IsColimit.uniqueUpToIso_hom,
     Cocones.forget_map, Iso.trans_hom, NatIso.ofComponents_hom_app, Functor.mapIso_hom, ←
     Category.assoc]
   erw [(isColimitOfPreserves F (colimit.isColimit (J.diagram P (unop X)))).fac]

70fd9563

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) 2021 Adam Topaz. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Adam Topaz
-
-! This file was ported from Lean 3 source module category_theory.sites.compatible_plus
-! leanprover-community/mathlib commit 70fd9563a21e7b963887c9360bd29b2393e6225a
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Sites.Whiskering
 import Mathlib.CategoryTheory.Sites.Plus
 
+#align_import category_theory.sites.compatible_plus from "leanprover-community/mathlib"@"70fd9563a21e7b963887c9360bd29b2393e6225a"
+
 /-!
 
 In this file, we prove that the plus functor is compatible with functors which

70fd9563

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

@@ -216,7 +216,7 @@ theorem whiskerRight_toPlus_comp_plusCompIso_hom :
   apply Multiequalizer.hom_ext
   delta Cover.toMultiequalizer
   simp only [diagramCompIso_hom_ι, Category.assoc, ← F.map_comp]
-  simp only [unop_op, limit.lift_π,  Multifork.ofι_π_app, Functor.comp_obj, Functor.comp_map,
+  simp only [unop_op, limit.lift_π, Multifork.ofι_π_app, Functor.comp_obj, Functor.comp_map,
     implies_true]
 #align category_theory.grothendieck_topology.whisker_right_to_plus_comp_plus_comp_iso_hom CategoryTheory.GrothendieckTopology.whiskerRight_toPlus_comp_plusCompIso_hom

70fd9563

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

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

dbae2f17

Diff

@@ -50,6 +50,7 @@ def diagramCompIso (X : C) : J.diagram P X ⋙ F ≅ J.diagram (P ⋙ F) X :=
     (by
       intro A B f
       -- porting note: this used to work with `ext`
+      -- See https://github.com/leanprover-community/mathlib4/issues/5229
       apply Multiequalizer.hom_ext
       dsimp
       simp only [Functor.mapCone_π_app, Multiequalizer.multifork_π_app_left, Iso.symm_hom,
@@ -148,6 +149,7 @@ theorem plusCompIso_whiskerLeft {F G : D ⥤ E} (η : F ⟶ G) (P : Cᵒᵖ ⥤
   simp only [← Category.assoc]
   congr 1
   -- porting note: this used to work with `ext`
+  -- See https://github.com/leanprover-community/mathlib4/issues/5229
   apply Multiequalizer.hom_ext
   intro a
   dsimp
@@ -184,6 +186,7 @@ theorem plusCompIso_whiskerRight {P Q : Cᵒᵖ ⥤ D} (η : P ⟶ Q) :
   simp only [← Category.assoc]
   congr 1
   -- porting note: this used to work with `ext`
+  -- See https://github.com/leanprover-community/mathlib4/issues/5229
   apply Multiequalizer.hom_ext
   intro a
   dsimp
@@ -209,6 +212,7 @@ theorem whiskerRight_toPlus_comp_plusCompIso_hom :
   simp only [← Category.assoc]
   congr 1
   -- porting note: this used to work with `ext`
+  -- See https://github.com/leanprover-community/mathlib4/issues/5229
   apply Multiequalizer.hom_ext
   delta Cover.toMultiequalizer
   simp only [diagramCompIso_hom_ι, Category.assoc, ← F.map_comp]

70fd9563

feat: port CategoryTheory.Sites.CompatiblePlus (#3836)

Co-authored-by: Moritz Firsching <firsching@google.com> Co-authored-by: Scott Morrison <scott.morrison@anu.edu.au>

900f806b

`category_theory.sites.compatible_plus` ⟷ `Mathlib.CategoryTheory.Sites.CompatiblePlus`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 3 + 316

category_theory.sites.compatible_plus ⟷ Mathlib.CategoryTheory.Sites.CompatiblePlus

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 3 + 316

`category_theory.sites.compatible_plus` ⟷ `Mathlib.CategoryTheory.Sites.CompatiblePlus`