category_theory.limits.shapes.disjoint_coproduct

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

c9c9fa15

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

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) 2021 Bhavik Mehta. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Bhavik Mehta
 -/
-import Mathbin.CategoryTheory.Limits.Shapes.BinaryProducts
-import Mathbin.CategoryTheory.Limits.Shapes.Pullbacks
+import CategoryTheory.Limits.Shapes.BinaryProducts
+import CategoryTheory.Limits.Shapes.Pullbacks
 
 #align_import category_theory.limits.shapes.disjoint_coproduct 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) 2021 Bhavik Mehta. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Bhavik Mehta
-
-! This file was ported from Lean 3 source module category_theory.limits.shapes.disjoint_coproduct
-! 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.Limits.Shapes.BinaryProducts
 import Mathbin.CategoryTheory.Limits.Shapes.Pullbacks
 
+#align_import category_theory.limits.shapes.disjoint_coproduct from "leanprover-community/mathlib"@"f47581155c818e6361af4e4fda60d27d020c226b"
+
 /-!
 # Disjoint coproducts

f4758115

bump to nightly-2023-04-24-06

mathlib commit https://github.com/leanprover-community/mathlib/commit/09079525fd01b3dda35e96adaa08d2f943e1648c

ff662d55

Diff

@@ -135,7 +135,7 @@ class CoproductsDisjoint (C : Type u) [Category.{v} C] where
 #align category_theory.limits.coproducts_disjoint CategoryTheory.Limits.CoproductsDisjoint
 -/
 
-attribute [instance] coproducts_disjoint.coproduct_disjoint
+attribute [instance 999] coproducts_disjoint.coproduct_disjoint
 
 #print CategoryTheory.Limits.initialMonoClass_of_disjoint_coproducts /-
 /-- If `C` has disjoint coproducts, any morphism out of initial is mono. Note it isn't true in

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: Bhavik Mehta
 
 ! This file was ported from Lean 3 source module category_theory.limits.shapes.disjoint_coproduct
-! leanprover-community/mathlib commit c9c9fa15fec7ca18e9ec97306fb8764bfe988a7e
+! 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.Shapes.Pullbacks
 /-!
 # Disjoint coproducts
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 Defines disjoint coproducts: coproducts where the intersection is initial and the coprojections
 are monic.
 Shows that a category with disjoint coproducts is `initial_mono_class`.

c9c9fa15

bump to nightly-2023-03-07-10

mathlib commit https://github.com/leanprover-community/mathlib/commit/3b267e70a936eebb21ab546f49a8df34dd300b25

02306e74

Diff

@@ -38,6 +38,7 @@ open Category
 
 variable {C : Type u} [Category.{v} C]
 
+#print CategoryTheory.Limits.CoproductDisjoint /-
 /-- Given any pullback diagram of the form
 
 Z  ⟶  X₁
@@ -55,7 +56,9 @@ class CoproductDisjoint (X₁ X₂ : C) where
   mono_inl : ∀ (X) (X₁ : X₁ ⟶ X) (X₂ : X₂ ⟶ X) (cX : IsColimit (BinaryCofan.mk X₁ X₂)), Mono X₁
   mono_inr : ∀ (X) (X₁ : X₁ ⟶ X) (X₂ : X₂ ⟶ X) (cX : IsColimit (BinaryCofan.mk X₁ X₂)), Mono X₂
 #align category_theory.limits.coproduct_disjoint CategoryTheory.Limits.CoproductDisjoint
+-/
 
+#print CategoryTheory.Limits.isInitialOfIsPullbackOfIsCoproduct /-
 /-- If the coproduct of `X₁` and `X₂` is disjoint, then given any pullback square
 
 Z  ⟶  X₁
@@ -69,7 +72,9 @@ def isInitialOfIsPullbackOfIsCoproduct {Z X₁ X₂ X : C} [CoproductDisjoint X
     {comm : f ≫ pX₁ = g ≫ pX₂} (cZ : IsLimit (PullbackCone.mk _ _ comm)) : IsInitial Z :=
   CoproductDisjoint.isInitialOfIsPullbackOfIsCoproduct cX cZ
 #align category_theory.limits.is_initial_of_is_pullback_of_is_coproduct CategoryTheory.Limits.isInitialOfIsPullbackOfIsCoproduct
+-/
 
+#print CategoryTheory.Limits.isInitialOfIsPullbackOfCoproduct /-
 /-- If the coproduct of `X₁` and `X₂` is disjoint, then given any pullback square
 
 Z  ⟶  X₁
@@ -84,7 +89,9 @@ noncomputable def isInitialOfIsPullbackOfCoproduct {Z X₁ X₂ : C} [HasBinaryC
     (cZ : IsLimit (PullbackCone.mk _ _ comm)) : IsInitial Z :=
   CoproductDisjoint.isInitialOfIsPullbackOfIsCoproduct (coprodIsCoprod _ _) cZ
 #align category_theory.limits.is_initial_of_is_pullback_of_coproduct CategoryTheory.Limits.isInitialOfIsPullbackOfCoproduct
+-/
 
+#print CategoryTheory.Limits.isInitialOfPullbackOfIsCoproduct /-
 /-- If the coproduct of `X₁` and `X₂` is disjoint, then provided `X₁ ⟶ X ← X₂` is a coproduct the
 pullback is an initial object:
 
@@ -97,7 +104,9 @@ noncomputable def isInitialOfPullbackOfIsCoproduct {X X₁ X₂ : C} [CoproductD
     IsInitial (pullback pX₁ pX₂) :=
   CoproductDisjoint.isInitialOfIsPullbackOfIsCoproduct cX (pullbackIsPullback _ _)
 #align category_theory.limits.is_initial_of_pullback_of_is_coproduct CategoryTheory.Limits.isInitialOfPullbackOfIsCoproduct
+-/
 
+#print CategoryTheory.Limits.isInitialOfPullbackOfCoproduct /-
 /-- If the coproduct of `X₁` and `X₂` is disjoint, the pullback of `X₁ ⟶ X₁ ⨿ X₂` and `X₂ ⟶ X₁ ⨿ X₂`
 is initial.
 -/
@@ -106,6 +115,7 @@ noncomputable def isInitialOfPullbackOfCoproduct {X₁ X₂ : C} [HasBinaryCopro
     IsInitial (pullback (coprod.inl : X₁ ⟶ _ ⨿ X₂) coprod.inr) :=
   isInitialOfIsPullbackOfCoproduct (pullbackIsPullback _ _)
 #align category_theory.limits.is_initial_of_pullback_of_coproduct CategoryTheory.Limits.isInitialOfPullbackOfCoproduct
+-/
 
 instance {X₁ X₂ : C} [HasBinaryCoproduct X₁ X₂] [CoproductDisjoint X₁ X₂] :
     Mono (coprod.inl : X₁ ⟶ X₁ ⨿ X₂) :=
@@ -115,13 +125,16 @@ instance {X₁ X₂ : C} [HasBinaryCoproduct X₁ X₂] [CoproductDisjoint X₁
     Mono (coprod.inr : X₂ ⟶ X₁ ⨿ X₂) :=
   CoproductDisjoint.mono_inr _ _ _ (coprodIsCoprod _ _)
 
+#print CategoryTheory.Limits.CoproductsDisjoint /-
 /-- `C` has disjoint coproducts if every coproduct is disjoint. -/
 class CoproductsDisjoint (C : Type u) [Category.{v} C] where
   CoproductDisjoint : ∀ X Y : C, CoproductDisjoint X Y
 #align category_theory.limits.coproducts_disjoint CategoryTheory.Limits.CoproductsDisjoint
+-/
 
 attribute [instance] coproducts_disjoint.coproduct_disjoint
 
+#print CategoryTheory.Limits.initialMonoClass_of_disjoint_coproducts /-
 /-- If `C` has disjoint coproducts, any morphism out of initial is mono. Note it isn't true in
 general that `C` has strict initial objects, for instance consider the category of types and
 partial functions. -/
@@ -135,6 +148,7 @@ theorem initialMonoClass_of_disjoint_coproducts [CoproductsDisjoint C] : Initial
           uniq := fun (s : BinaryCofan _ _) m w =>
             (id_comp _).symm.trans (w ⟨WalkingPair.right⟩) } }
 #align category_theory.limits.initial_mono_class_of_disjoint_coproducts CategoryTheory.Limits.initialMonoClass_of_disjoint_coproducts
+-/
 
 end Limits

c9c9fa15

bump to nightly-2023-02-27-08

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

91d8c210

Diff

@@ -130,9 +130,9 @@ theorem initialMonoClass_of_disjoint_coproducts [CoproductsDisjoint C] : Initial
     isInitial_mono_from := fun I X hI =>
       CoproductDisjoint.mono_inl _ _ (𝟙 X)
         { desc := fun s : BinaryCofan _ _ => s.inr
-          fac' := fun s j =>
+          fac := fun s j =>
             Discrete.casesOn j fun j => WalkingPair.casesOn j (hI.hom_ext _ _) (id_comp _)
-          uniq' := fun (s : BinaryCofan _ _) m w =>
+          uniq := fun (s : BinaryCofan _ _) m w =>
             (id_comp _).symm.trans (w ⟨WalkingPair.right⟩) } }
 #align category_theory.limits.initial_mono_class_of_disjoint_coproducts CategoryTheory.Limits.initialMonoClass_of_disjoint_coproducts

c9c9fa15

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

c9c9fa15

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 Bhavik Mehta. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Bhavik Mehta
-
-! This file was ported from Lean 3 source module category_theory.limits.shapes.disjoint_coproduct
-! leanprover-community/mathlib commit c9c9fa15fec7ca18e9ec97306fb8764bfe988a7e
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Limits.Shapes.BinaryProducts
 import Mathlib.CategoryTheory.Limits.Shapes.Pullbacks
 
+#align_import category_theory.limits.shapes.disjoint_coproduct from "leanprover-community/mathlib"@"c9c9fa15fec7ca18e9ec97306fb8764bfe988a7e"
+
 /-!
 # Disjoint coproducts

c9c9fa15

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

@@ -40,9 +40,9 @@ variable {C : Type u} [Category.{v} C]
 
 /-- Given any pullback diagram of the form
 
-Z  ⟶  X₁
+Z ⟶ X₁
 ↓      ↓
-X₂ ⟶  X
+X₂ ⟶ X
 
 where `X₁ ⟶ X ← X₂` is a coproduct diagram, then `Z` is initial, and both `X₁ ⟶ X` and `X₂ ⟶ X`
 are mono.
@@ -58,9 +58,9 @@ class CoproductDisjoint (X₁ X₂ : C) where
 
 /-- If the coproduct of `X₁` and `X₂` is disjoint, then given any pullback square
 
-Z  ⟶  X₁
+Z ⟶ X₁
 ↓      ↓
-X₂ ⟶  X
+X₂ ⟶ X
 
 where `X₁ ⟶ X ← X₂` is a coproduct, then `Z` is initial.
 -/
@@ -72,9 +72,9 @@ def isInitialOfIsPullbackOfIsCoproduct {Z X₁ X₂ X : C} [CoproductDisjoint X
 
 /-- If the coproduct of `X₁` and `X₂` is disjoint, then given any pullback square
 
-Z  ⟶  X₁
+Z ⟶ X₁
 ↓       ↓
-X₂ ⟶  X₁ ⨿ X₂
+X₂ ⟶ X₁ ⨿ X₂
 
 `Z` is initial.
 -/
@@ -90,7 +90,7 @@ pullback is an initial object:
 
         X₁
         ↓
-X₂ ⟶  X
+X₂ ⟶ X
 -/
 noncomputable def isInitialOfPullbackOfIsCoproduct {X X₁ X₂ : C} [CoproductDisjoint X₁ X₂]
     {pX₁ : X₁ ⟶ X} {pX₂ : X₂ ⟶ X} [HasPullback pX₁ pX₂] (cX : IsColimit (BinaryCofan.mk pX₁ pX₂)) :

c9c9fa15

chore: port missing instance priorities (#3613)

See discussion at https://leanprover.zulipchat.com/#narrow/stream/287929-mathlib4/topic/mathport.20drops.20priorities.20in.20.60attribute.20.5Binstance.5D.60. mathport has been dropping the priorities on instances when using the attribute command.

This PR adds back all the priorities, except for local attribute, and instances involving coercions, which I didn't want to mess with.

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

b0c1460c

Diff

@@ -120,7 +120,7 @@ class CoproductsDisjoint (C : Type u) [Category.{v} C] where
   CoproductDisjoint : ∀ X Y : C, CoproductDisjoint X Y
 #align category_theory.limits.coproducts_disjoint CategoryTheory.Limits.CoproductsDisjoint
 
-attribute [instance] CoproductsDisjoint.CoproductDisjoint
+attribute [instance 999] CoproductsDisjoint.CoproductDisjoint
 
 /-- If `C` has disjoint coproducts, any morphism out of initial is mono. Note it isn't true in
 general that `C` has strict initial objects, for instance consider the category of types and

c9c9fa15

chore: tidy various files (#2742)

8c7b65ad

Diff

@@ -125,14 +125,14 @@ attribute [instance] CoproductsDisjoint.CoproductDisjoint
 /-- If `C` has disjoint coproducts, any morphism out of initial is mono. Note it isn't true in
 general that `C` has strict initial objects, for instance consider the category of types and
 partial functions. -/
-theorem initialMonoClass_of_disjoint_coproducts [CoproductsDisjoint C] : InitialMonoClass C :=
-  { isInitial_mono_from := @fun _I X hI =>
-      CoproductDisjoint.mono_inl X (IsInitial.to hI X) (CategoryTheory.CategoryStruct.id X)
-        { desc := fun s : BinaryCofan _ _ => s.inr
-          fac := fun _s j =>
-            Discrete.casesOn j fun j => WalkingPair.casesOn j (hI.hom_ext _ _) (id_comp _)
-          uniq := fun (_s : BinaryCofan _ _) _m w =>
-            (id_comp _).symm.trans (w ⟨WalkingPair.right⟩) } }
+theorem initialMonoClass_of_disjoint_coproducts [CoproductsDisjoint C] : InitialMonoClass C where
+  isInitial_mono_from X hI :=
+    CoproductDisjoint.mono_inl X (IsInitial.to hI X) (CategoryTheory.CategoryStruct.id X)
+      { desc := fun s : BinaryCofan _ _ => s.inr
+        fac := fun _s j =>
+          Discrete.casesOn j fun j => WalkingPair.casesOn j (hI.hom_ext _ _) (id_comp _)
+        uniq := fun (_s : BinaryCofan _ _) _m w =>
+          (id_comp _).symm.trans (w ⟨WalkingPair.right⟩) }
 #align category_theory.limits.initial_mono_class_of_disjoint_coproducts CategoryTheory.Limits.initialMonoClass_of_disjoint_coproducts
 
 end Limits

c9c9fa15

feat: port CategoryTheory.Limits.Shapes.DisjointCoproduct (#2689)

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

7003654e

`category_theory.limits.shapes.disjoint_coproduct` ⟷ `Mathlib.CategoryTheory.Limits.Shapes.DisjointCoproduct`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 110

category_theory.limits.shapes.disjoint_coproduct ⟷ Mathlib.CategoryTheory.Limits.Shapes.DisjointCoproduct

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 110

`category_theory.limits.shapes.disjoint_coproduct` ⟷ `Mathlib.CategoryTheory.Limits.Shapes.DisjointCoproduct`