algebra.category.Module.subobject | 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

6d584f17

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

44e2ae8c

bump to nightly-2024-04-06-08

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

e34029c9

Diff

@@ -3,8 +3,8 @@ Copyright (c) 2021 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 -/
-import Algebra.Category.Module.EpiMono
-import Algebra.Category.Module.Kernels
+import Algebra.Category.ModuleCat.EpiMono
+import Algebra.Category.ModuleCat.Kernels
 import CategoryTheory.Subobject.WellPowered
 import CategoryTheory.Subobject.Limits

44e2ae8c

bump to nightly-2023-11-29-11

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

049e2cad

Diff

@@ -73,7 +73,7 @@ noncomputable def subobjectModule : Subobject M ≃o Submodule R M :=
         · exact (Submodule.range_subtype _).symm
       map_rel_iff' := fun S T =>
         by
-        refine' ⟨fun h => _, fun h => mk_le_mk_of_comm (↟(Submodule.ofLe h)) (by ext; rfl)⟩
+        refine' ⟨fun h => _, fun h => mk_le_mk_of_comm (↟(Submodule.inclusion h)) (by ext; rfl)⟩
         convert LinearMap.range_comp_le_range (of_mk_le_mk _ _ h) (↾T.subtype)
         · simpa only [← comp_def, of_mk_le_mk_comp] using (Submodule.range_subtype _).symm
         · exact (Submodule.range_subtype _).symm }

44e2ae8c

bump to nightly-2023-09-24-06

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

5655435f

Diff

@@ -3,10 +3,10 @@ Copyright (c) 2021 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 -/
-import Mathbin.Algebra.Category.Module.EpiMono
-import Mathbin.Algebra.Category.Module.Kernels
-import Mathbin.CategoryTheory.Subobject.WellPowered
-import Mathbin.CategoryTheory.Subobject.Limits
+import Algebra.Category.Module.EpiMono
+import Algebra.Category.Module.Kernels
+import CategoryTheory.Subobject.WellPowered
+import CategoryTheory.Subobject.Limits
 
 #align_import algebra.category.Module.subobject from "leanprover-community/mathlib"@"44e2ae8cffc713925494e4975ee31ec1d06929b3"

44e2ae8c

bump to nightly-2023-07-20-09

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

9c56d0dd

Diff

@@ -2,17 +2,14 @@
 Copyright (c) 2021 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
-
-! This file was ported from Lean 3 source module algebra.category.Module.subobject
-! leanprover-community/mathlib commit 44e2ae8cffc713925494e4975ee31ec1d06929b3
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Algebra.Category.Module.EpiMono
 import Mathbin.Algebra.Category.Module.Kernels
 import Mathbin.CategoryTheory.Subobject.WellPowered
 import Mathbin.CategoryTheory.Subobject.Limits
 
+#align_import algebra.category.Module.subobject from "leanprover-community/mathlib"@"44e2ae8cffc713925494e4975ee31ec1d06929b3"
+
 /-!
 # Subobjects in the category of `R`-modules

44e2ae8c

bump to nightly-2023-06-14-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/8efcf8022aac8e01df8d302dcebdbc25d6a886c8

f4ed04bb

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 
 ! This file was ported from Lean 3 source module algebra.category.Module.subobject
-! leanprover-community/mathlib commit 6d584f1709bedbed9175bd9350df46599bdd7213
+! leanprover-community/mathlib commit 44e2ae8cffc713925494e4975ee31ec1d06929b3
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -16,6 +16,9 @@ import Mathbin.CategoryTheory.Subobject.Limits
 /-!
 # Subobjects in the category of `R`-modules
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 We construct an explicit order isomorphism between the categorical subobjects of an `R`-module `M`
 and its submodules. This immediately implies that the category of `R`-modules is well-powered.

6d584f17

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -36,6 +36,7 @@ namespace ModuleCat
 
 variable {R : Type u} [Ring R] (M : ModuleCat.{v} R)
 
+#print ModuleCat.subobjectModule /-
 /-- The categorical subobjects of a module `M` are in one-to-one correspondence with its
     submodules.-/
 noncomputable def subobjectModule : Subobject M ≃o Submodule R M :=
@@ -77,6 +78,7 @@ noncomputable def subobjectModule : Subobject M ≃o Submodule R M :=
         · simpa only [← comp_def, of_mk_le_mk_comp] using (Submodule.range_subtype _).symm
         · exact (Submodule.range_subtype _).symm }
 #align Module.subobject_Module ModuleCat.subobjectModule
+-/
 
 #print ModuleCat.wellPowered_moduleCat /-
 instance wellPowered_moduleCat : WellPowered (ModuleCat.{v} R) :=
@@ -86,17 +88,22 @@ instance wellPowered_moduleCat : WellPowered (ModuleCat.{v} R) :=
 
 attribute [local instance] has_kernels_Module
 
+#print ModuleCat.toKernelSubobject /-
 /-- Bundle an element `m : M` such that `f m = 0` as a term of `kernel_subobject f`. -/
 noncomputable def toKernelSubobject {M N : ModuleCat R} {f : M ⟶ N} :
     LinearMap.ker f →ₗ[R] kernelSubobject f :=
   (kernelSubobjectIso f ≪≫ ModuleCat.kernelIsoKer f).inv
 #align Module.to_kernel_subobject ModuleCat.toKernelSubobject
+-/
 
+#print ModuleCat.toKernelSubobject_arrow /-
 @[simp]
 theorem toKernelSubobject_arrow {M N : ModuleCat R} {f : M ⟶ N} (x : LinearMap.ker f) :
     (kernelSubobject f).arrow (toKernelSubobject x) = x.1 := by simp [to_kernel_subobject]
 #align Module.to_kernel_subobject_arrow ModuleCat.toKernelSubobject_arrow
+-/
 
+#print ModuleCat.cokernel_π_imageSubobject_ext /-
 /-- An extensionality lemma showing that two elements of a cokernel by an image
 are equal if they differ by an element of the image.
 
@@ -109,6 +116,7 @@ theorem cokernel_π_imageSubobject_ext {L M N : ModuleCat.{v} R} (f : L ⟶ M) [
     (w : x = y + g (factorThruImageSubobject f l)) : cokernel.π g x = cokernel.π g y := by subst w;
   simp
 #align Module.cokernel_π_image_subobject_ext ModuleCat.cokernel_π_imageSubobject_ext
+-/
 
 end ModuleCat

6d584f17

bump to nightly-2023-06-12-17

mathlib commit https://github.com/leanprover-community/mathlib/commit/ccdbfb6e5614667af5aa3ab2d50885e0ef44a46f

ae53e046

Diff

@@ -78,9 +78,11 @@ noncomputable def subobjectModule : Subobject M ≃o Submodule R M :=
         · exact (Submodule.range_subtype _).symm }
 #align Module.subobject_Module ModuleCat.subobjectModule
 
+#print ModuleCat.wellPowered_moduleCat /-
 instance wellPowered_moduleCat : WellPowered (ModuleCat.{v} R) :=
   ⟨fun M => ⟨⟨_, ⟨(subobjectModule M).toEquiv⟩⟩⟩⟩
 #align Module.well_powered_Module ModuleCat.wellPowered_moduleCat
+-/
 
 attribute [local instance] has_kernels_Module

6d584f17

bump to nightly-2023-05-28-18

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

8d353152

Diff

@@ -28,7 +28,7 @@ open CategoryTheory.Subobject
 
 open CategoryTheory.Limits
 
-open ModuleCat
+open scoped ModuleCat
 
 universe v u

6d584f17

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -72,12 +72,7 @@ noncomputable def subobjectModule : Subobject M ≃o Submodule R M :=
         · exact (Submodule.range_subtype _).symm
       map_rel_iff' := fun S T =>
         by
-        refine'
-          ⟨fun h => _, fun h =>
-            mk_le_mk_of_comm (↟(Submodule.ofLe h))
-              (by
-                ext
-                rfl)⟩
+        refine' ⟨fun h => _, fun h => mk_le_mk_of_comm (↟(Submodule.ofLe h)) (by ext; rfl)⟩
         convert LinearMap.range_comp_le_range (of_mk_le_mk _ _ h) (↾T.subtype)
         · simpa only [← comp_def, of_mk_le_mk_comp] using (Submodule.range_subtype _).symm
         · exact (Submodule.range_subtype _).symm }
@@ -109,9 +104,7 @@ two elements in homology are equal if they differ by a boundary.
 @[ext]
 theorem cokernel_π_imageSubobject_ext {L M N : ModuleCat.{v} R} (f : L ⟶ M) [HasImage f]
     (g : (imageSubobject f : ModuleCat.{v} R) ⟶ N) [HasCokernel g] {x y : N} (l : L)
-    (w : x = y + g (factorThruImageSubobject f l)) : cokernel.π g x = cokernel.π g y :=
-  by
-  subst w
+    (w : x = y + g (factorThruImageSubobject f l)) : cokernel.π g x = cokernel.π g y := by subst w;
   simp
 #align Module.cokernel_π_image_subobject_ext ModuleCat.cokernel_π_imageSubobject_ext

6d584f17

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

6d584f17

style: replace '.-/' by '. -/' (#11938)

Purely automatic replacement. If this is in any way controversial; I'm happy to just close this PR.

3556ded2

Diff

@@ -35,7 +35,7 @@ set_option linter.uppercaseLean3 false -- `Module`
 variable {R : Type u} [Ring R] (M : ModuleCat.{v} R)
 
 /-- The categorical subobjects of a module `M` are in one-to-one correspondence with its
-    submodules.-/
+    submodules. -/
 noncomputable def subobjectModule : Subobject M ≃o Submodule R M :=
   OrderIso.symm
     { invFun := fun S => LinearMap.range S.arrow

6d584f17

chore: classify todo porting notes (#11216)

Classifies by adding issue number #11215 to porting notes claiming "TODO".

86f95a40

Diff

@@ -102,7 +102,8 @@ are equal if they differ by an element of the image.
 The application is for homology:
 two elements in homology are equal if they differ by a boundary.
 -/
--- Porting note: TODO compiler complains that this is marked with `@[ext]`. Should this be changed?
+-- Porting note (#11215): TODO compiler complains that this is marked with `@[ext]`.
+-- Should this be changed?
 -- @[ext] this is no longer an ext lemma under the current interpretation see eg
 -- the conversation beginning at
 -- https://leanprover.zulipchat.com/#narrow/stream/287929-mathlib4/topic/

6d584f17

refactor: rename Submodule.ofLe to Submodule.inclusion (#8470)

This matches Set.inclusion, Subring.inclusion, Subalgebra.inclusion, etc.

Also renames the homOfLe spellings in Algebra/Lie to match.

Note that we leave LieSubalgebra.ofLe, as this is a completely different statement!

As requested by @alreadydone.

b1febe50

Diff

@@ -67,7 +67,7 @@ noncomputable def subobjectModule : Subobject M ≃o Submodule R M :=
           rw [this, comp_def, LinearEquiv.range_comp]
         · exact (Submodule.range_subtype _).symm
       map_rel_iff' := fun {S T} => by
-        refine' ⟨fun h => _, fun h => mk_le_mk_of_comm (↟(Submodule.ofLe h)) rfl⟩
+        refine' ⟨fun h => _, fun h => mk_le_mk_of_comm (↟(Submodule.inclusion h)) rfl⟩
         convert LinearMap.range_comp_le_range (ofMkLEMk _ _ h) (↾T.subtype)
         · simpa only [← comp_def, ofMkLEMk_comp] using (Submodule.range_subtype _).symm
         · exact (Submodule.range_subtype _).symm }

6d584f17

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

@@ -2,17 +2,14 @@
 Copyright (c) 2021 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
-
-! This file was ported from Lean 3 source module algebra.category.Module.subobject
-! leanprover-community/mathlib commit 6d584f1709bedbed9175bd9350df46599bdd7213
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.Category.ModuleCat.EpiMono
 import Mathlib.Algebra.Category.ModuleCat.Kernels
 import Mathlib.CategoryTheory.Subobject.WellPowered
 import Mathlib.CategoryTheory.Subobject.Limits
 
+#align_import algebra.category.Module.subobject from "leanprover-community/mathlib"@"6d584f1709bedbed9175bd9350df46599bdd7213"
+
 /-!
 # Subobjects in the category of `R`-modules

6d584f17

feat: port Algebra.Homology.Module (#5000)

Co-authored-by: Joël Riou <37772949+joelriou@users.noreply.github.com>

d8c9d310

Diff

@@ -83,7 +83,7 @@ instance wellPowered_moduleCat : WellPowered (ModuleCat.{v} R) :=
 attribute [local instance] hasKernels_moduleCat
 
 /-- Bundle an element `m : M` such that `f m = 0` as a term of `kernelSubobject f`. -/
-noncomputable def toKernelSubobject {M N : ModuleCat R} {f : M ⟶ N} :
+noncomputable def toKernelSubobject {M N : ModuleCat.{v} R} {f : M ⟶ N} :
     LinearMap.ker f →ₗ[R] kernelSubobject f :=
   (kernelSubobjectIso f ≪≫ ModuleCat.kernelIsoKer f).inv
 #align Module.to_kernel_subobject ModuleCat.toKernelSubobject

6d584f17

feat: port Algebra.Category.Module.Subobject (#4224)

Co-authored-by: Moritz Firsching <firsching@google.com> Co-authored-by: int-y1 <jason_yuen2007@hotmail.com> Co-authored-by: Matthew Ballard <matt@mrb.email> Co-authored-by: Scott Morrison <scott.morrison@anu.edu.au> Co-authored-by: nick-kuhn <46423253+nick-kuhn@users.noreply.github.com>

889ec590

`algebra.category.Module.subobject` ⟷ `Mathlib.Algebra.Category.ModuleCat.Subobject`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 8 + 498

algebra.category.Module.subobject ⟷ Mathlib.Algebra.Category.ModuleCat.Subobject

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 8 + 498

`algebra.category.Module.subobject` ⟷ `Mathlib.Algebra.Category.ModuleCat.Subobject`