algebra.category.Group.images | 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

0b7c740e

bump to nightly-2024-04-06-08

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

e34029c9

Diff

@@ -3,7 +3,7 @@ Copyright (c) 2020 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison
 -/
-import Algebra.Category.Group.Abelian
+import Algebra.Category.GroupCat.Abelian
 import CategoryTheory.Limits.Shapes.Images
 
 #align_import algebra.category.Group.images from "leanprover-community/mathlib"@"0b7c740e25651db0ba63648fbae9f9d6f941e31b"

0b7c740e

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) 2020 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison
 -/
-import Mathbin.Algebra.Category.Group.Abelian
-import Mathbin.CategoryTheory.Limits.Shapes.Images
+import Algebra.Category.Group.Abelian
+import CategoryTheory.Limits.Shapes.Images
 
 #align_import algebra.category.Group.images from "leanprover-community/mathlib"@"0b7c740e25651db0ba63648fbae9f9d6f941e31b"

0b7c740e

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) 2020 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison
-
-! This file was ported from Lean 3 source module algebra.category.Group.images
-! leanprover-community/mathlib commit 0b7c740e25651db0ba63648fbae9f9d6f941e31b
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Algebra.Category.Group.Abelian
 import Mathbin.CategoryTheory.Limits.Shapes.Images
 
+#align_import algebra.category.Group.images from "leanprover-community/mathlib"@"0b7c740e25651db0ba63648fbae9f9d6f941e31b"
+
 /-!
 # The category of commutative additive groups has images.

0b7c740e

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -129,6 +129,7 @@ noncomputable def isImage : IsImage (monoFactorisation f)
 #align AddCommGroup.is_image AddCommGroupCat.isImage
 -/
 
+#print AddCommGroupCat.imageIsoRange /-
 /-- The categorical image of a morphism in `AddCommGroup`
 agrees with the usual group-theoretical range.
 -/
@@ -136,6 +137,7 @@ noncomputable def imageIsoRange {G H : AddCommGroupCat.{0}} (f : G ⟶ H) :
     Limits.image f ≅ AddCommGroupCat.of f.range :=
   IsImage.isoExt (Image.isImage f) (isImage f)
 #align AddCommGroup.image_iso_range AddCommGroupCat.imageIsoRange
+-/
 
 end AddCommGroupCat

0b7c740e

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -129,12 +129,6 @@ noncomputable def isImage : IsImage (monoFactorisation f)
 #align AddCommGroup.is_image AddCommGroupCat.isImage
 -/
 
-/- warning: AddCommGroup.image_iso_range -> AddCommGroupCat.imageIsoRange is a dubious translation:
-lean 3 declaration is
-  forall {G : AddCommGroupCat.{0}} {H : AddCommGroupCat.{0}} (f : Quiver.Hom.{1, 1} AddCommGroupCat.{0} (CategoryTheory.CategoryStruct.toQuiver.{0, 1} AddCommGroupCat.{0} (CategoryTheory.Category.toCategoryStruct.{0, 1} AddCommGroupCat.{0} AddCommGroupCat.largeCategory.{0})) G H), CategoryTheory.Iso.{0, 1} AddCommGroupCat.{0} AddCommGroupCat.largeCategory.{0} (CategoryTheory.Limits.image.{0, 1} AddCommGroupCat.{0} AddCommGroupCat.largeCategory.{0} G H f (AddCommGroupCat.imageIsoRange._proof_1 G H f)) (AddCommGroupCat.of.{0} (coeSort.{1, 2} (AddSubgroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H))) Type (SetLike.hasCoeToSort.{0, 0} (AddSubgroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H))) (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddSubgroup.setLike.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H)))) (AddMonoidHom.range.{0, 0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f)) (AddSubgroup.toAddCommGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H) (AddMonoidHom.range.{0, 0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f)))
-but is expected to have type
-  forall {G : AddCommGroupCat.{0}} {H : AddCommGroupCat.{0}} (f : Quiver.Hom.{1, 1} AddCommGroupCat.{0} (CategoryTheory.CategoryStruct.toQuiver.{0, 1} AddCommGroupCat.{0} (CategoryTheory.Category.toCategoryStruct.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0})) G H), CategoryTheory.Iso.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} (CategoryTheory.Limits.image.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} G H f (CategoryTheory.Limits.HasImages.has_image.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} (CategoryTheory.Limits.hasImages_of_hasStrongEpiMonoFactorisations.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} (CategoryTheory.Abelian.instHasStrongEpiMonoFactorisations.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} AddCommGroupCat.instAbelianAddCommGroupCatInstAddCommGroupCatLargeCategory.{0})) G H f)) (AddCommGroupCat.of.{0} (Subtype.{1} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (fun (x : CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) => Membership.mem.{0, 0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddSubgroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H))) (SetLike.instMembership.{0, 0} (AddSubgroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H))) (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddSubgroup.instSetLikeAddSubgroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H)))) x (AddMonoidHom.range.{0, 0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f))) (AddSubgroup.toAddCommGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H) (AddMonoidHom.range.{0, 0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f)))
-Case conversion may be inaccurate. Consider using '#align AddCommGroup.image_iso_range AddCommGroupCat.imageIsoRangeₓ'. -/
 /-- The categorical image of a morphism in `AddCommGroup`
 agrees with the usual group-theoretical range.
 -/

0b7c740e

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -64,10 +64,7 @@ def factorThruImage : G ⟶ image f :=
 -/
 
 #print AddCommGroupCat.image.fac /-
-theorem image.fac : factorThruImage f ≫ image.ι f = f :=
-  by
-  ext
-  rfl
+theorem image.fac : factorThruImage f ≫ image.ι f = f := by ext; rfl
 #align AddCommGroup.image.fac AddCommGroupCat.image.fac
 -/

0b7c740e

bump to nightly-2023-05-28-03

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

6c6011cf

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison
 
 ! This file was ported from Lean 3 source module algebra.category.Group.images
-! leanprover-community/mathlib commit 70fd9563a21e7b963887c9360bd29b2393e6225a
+! leanprover-community/mathlib commit 0b7c740e25651db0ba63648fbae9f9d6f941e31b
 ! 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.Images
 /-!
 # The category of commutative additive groups has images.
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 Note that we don't need to register any of the constructions here as instances, because we get them
 from the fact that `AddCommGroup` is an abelian category.
 -/
@@ -35,35 +38,44 @@ attribute [local ext] Subtype.ext_val
 
 section
 
+#print AddCommGroupCat.image /-
 -- implementation details of `has_image` for AddCommGroup; use the API, not these
 /-- the image of a morphism in AddCommGroup is just the bundling of `add_monoid_hom.range f` -/
 def image : AddCommGroupCat :=
   AddCommGroupCat.of (AddMonoidHom.range f)
 #align AddCommGroup.image AddCommGroupCat.image
+-/
 
+#print AddCommGroupCat.image.ι /-
 /-- the inclusion of `image f` into the target -/
 def image.ι : image f ⟶ H :=
   f.range.Subtype
 #align AddCommGroup.image.ι AddCommGroupCat.image.ι
+-/
 
 instance : Mono (image.ι f) :=
   ConcreteCategory.mono_of_injective (image.ι f) Subtype.val_injective
 
+#print AddCommGroupCat.factorThruImage /-
 /-- the corestriction map to the image -/
 def factorThruImage : G ⟶ image f :=
   f.range_restrict
 #align AddCommGroup.factor_thru_image AddCommGroupCat.factorThruImage
+-/
 
+#print AddCommGroupCat.image.fac /-
 theorem image.fac : factorThruImage f ≫ image.ι f = f :=
   by
   ext
   rfl
 #align AddCommGroup.image.fac AddCommGroupCat.image.fac
+-/
 
 attribute [local simp] image.fac
 
 variable {f}
 
+#print AddCommGroupCat.image.lift /-
 /-- the universal property for the image factorisation -/
 noncomputable def image.lift (F' : MonoFactorisation f) : image f ⟶ F'.i
     where
@@ -86,7 +98,9 @@ noncomputable def image.lift (F' : MonoFactorisation f) : image f ⟶ F'.i
     rw [(Classical.indefiniteDescription (fun z => f z = _) _).2]
     rfl
 #align AddCommGroup.image.lift AddCommGroupCat.image.lift
+-/
 
+#print AddCommGroupCat.image.lift_fac /-
 theorem image.lift_fac (F' : MonoFactorisation f) : image.lift F' ≫ F'.m = image.ι f :=
   by
   ext x
@@ -94,9 +108,11 @@ theorem image.lift_fac (F' : MonoFactorisation f) : image.lift F' ≫ F'.m = ima
   rw [F'.fac, (Classical.indefiniteDescription _ x.2).2]
   rfl
 #align AddCommGroup.image.lift_fac AddCommGroupCat.image.lift_fac
+-/
 
 end
 
+#print AddCommGroupCat.monoFactorisation /-
 /-- the factorisation of any morphism in AddCommGroup through a mono. -/
 def monoFactorisation : MonoFactorisation f
     where
@@ -104,7 +120,9 @@ def monoFactorisation : MonoFactorisation f
   m := image.ι f
   e := factorThruImage f
 #align AddCommGroup.mono_factorisation AddCommGroupCat.monoFactorisation
+-/
 
+#print AddCommGroupCat.isImage /-
 /-- the factorisation of any morphism in AddCommGroup through a mono has the universal property of
 the image. -/
 noncomputable def isImage : IsImage (monoFactorisation f)
@@ -112,7 +130,14 @@ noncomputable def isImage : IsImage (monoFactorisation f)
   lift := image.lift
   lift_fac := image.lift_fac
 #align AddCommGroup.is_image AddCommGroupCat.isImage
+-/
 
+/- warning: AddCommGroup.image_iso_range -> AddCommGroupCat.imageIsoRange is a dubious translation:
+lean 3 declaration is
+  forall {G : AddCommGroupCat.{0}} {H : AddCommGroupCat.{0}} (f : Quiver.Hom.{1, 1} AddCommGroupCat.{0} (CategoryTheory.CategoryStruct.toQuiver.{0, 1} AddCommGroupCat.{0} (CategoryTheory.Category.toCategoryStruct.{0, 1} AddCommGroupCat.{0} AddCommGroupCat.largeCategory.{0})) G H), CategoryTheory.Iso.{0, 1} AddCommGroupCat.{0} AddCommGroupCat.largeCategory.{0} (CategoryTheory.Limits.image.{0, 1} AddCommGroupCat.{0} AddCommGroupCat.largeCategory.{0} G H f (AddCommGroupCat.imageIsoRange._proof_1 G H f)) (AddCommGroupCat.of.{0} (coeSort.{1, 2} (AddSubgroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H))) Type (SetLike.hasCoeToSort.{0, 0} (AddSubgroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H))) (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddSubgroup.setLike.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H)))) (AddMonoidHom.range.{0, 0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f)) (AddSubgroup.toAddCommGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H) (AddMonoidHom.range.{0, 0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroup.toAddGroup.{0} (coeSort.{2, 2} (CategoryTheory.Bundled.{0, 0} AddCommGroup.{0}) Type (CategoryTheory.Bundled.hasCoeToSort.{0, 0} AddCommGroup.{0}) H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f)))
+but is expected to have type
+  forall {G : AddCommGroupCat.{0}} {H : AddCommGroupCat.{0}} (f : Quiver.Hom.{1, 1} AddCommGroupCat.{0} (CategoryTheory.CategoryStruct.toQuiver.{0, 1} AddCommGroupCat.{0} (CategoryTheory.Category.toCategoryStruct.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0})) G H), CategoryTheory.Iso.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} (CategoryTheory.Limits.image.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} G H f (CategoryTheory.Limits.HasImages.has_image.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} (CategoryTheory.Limits.hasImages_of_hasStrongEpiMonoFactorisations.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} (CategoryTheory.Abelian.instHasStrongEpiMonoFactorisations.{0, 1} AddCommGroupCat.{0} instAddCommGroupCatLargeCategory.{0} AddCommGroupCat.instAbelianAddCommGroupCatInstAddCommGroupCatLargeCategory.{0})) G H f)) (AddCommGroupCat.of.{0} (Subtype.{1} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (fun (x : CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) => Membership.mem.{0, 0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddSubgroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H))) (SetLike.instMembership.{0, 0} (AddSubgroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H))) (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddSubgroup.instSetLikeAddSubgroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H)))) x (AddMonoidHom.range.{0, 0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f))) (AddSubgroup.toAddCommGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H) (AddMonoidHom.range.{0, 0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} G) (AddCommGroupCat.addCommGroupInstance.{0} G)) (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroup.toAddGroup.{0} (CategoryTheory.Bundled.α.{0, 0} AddCommGroup.{0} H) (AddCommGroupCat.addCommGroupInstance.{0} H)) f)))
+Case conversion may be inaccurate. Consider using '#align AddCommGroup.image_iso_range AddCommGroupCat.imageIsoRangeₓ'. -/
 /-- The categorical image of a morphism in `AddCommGroup`
 agrees with the usual group-theoretical range.
 -/

70fd9563

bump to nightly-2023-03-07-20

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

c0bba963

Diff

@@ -110,7 +110,7 @@ the image. -/
 noncomputable def isImage : IsImage (monoFactorisation f)
     where
   lift := image.lift
-  lift_fac' := image.lift_fac
+  lift_fac := image.lift_fac
 #align AddCommGroup.is_image AddCommGroupCat.isImage
 
 /-- The categorical image of a morphism in `AddCommGroup`

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: 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) 2020 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison
-
-! This file was ported from Lean 3 source module algebra.category.Group.images
-! 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.Algebra.Category.GroupCat.Abelian
 import Mathlib.CategoryTheory.Limits.Shapes.Images
 
+#align_import algebra.category.Group.images from "leanprover-community/mathlib"@"70fd9563a21e7b963887c9360bd29b2393e6225a"
+
 /-!
 # The category of commutative additive groups has images.

70fd9563

chore: tidy various files (#4423)

9f94180e

Diff

@@ -37,7 +37,7 @@ attribute [local ext] Subtype.ext_val
 
 section
 
--- implementation details of `has_image` for `AddCommGroupCat`; use the API, not these
+-- implementation details of `IsImage` for `AddCommGroupCat`; use the API, not these
 /-- the image of a morphism in `AddCommGroupCat` is just the bundling of `AddMonoidHom.range f` -/
 def image : AddCommGroupCat :=
   AddCommGroupCat.of (AddMonoidHom.range f)

70fd9563

feat: port Algebra.Category.GroupCat.Images (#4403)

78c6eda1

`algebra.category.Group.images` ⟷ `Mathlib.Algebra.Category.GroupCat.Images`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 8 + 646

algebra.category.Group.images ⟷ Mathlib.Algebra.Category.GroupCat.Images

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 8 + 646

`algebra.category.Group.images` ⟷ `Mathlib.Algebra.Category.GroupCat.Images`