category_theory.limits.constructions.weakly_initial

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

239d882c

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

9d2f0748

bump to nightly-2024-03-17-08

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

22f01ce4

Diff

@@ -66,7 +66,7 @@ theorem hasInitial_of_weakly_initial_and_hasWideEqualizers [HasWideEqualizers.{v
       by
       rw [category.assoc, category.assoc]
       apply wide_equalizer.condition (id : endos → endos) (h ≫ e ≫ i)
-    rw [category.comp_id, cancel_mono_id i] at this 
+    rw [category.comp_id, cancel_mono_id i] at this
     haveI : is_split_epi e := is_split_epi.mk' ⟨i ≫ h, this⟩
     rw [← cancel_epi e]
     apply equalizer.condition

9d2f0748

bump to nightly-2023-09-24-06

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

5655435f

Diff

@@ -3,9 +3,9 @@ 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.WideEqualizers
-import Mathbin.CategoryTheory.Limits.Shapes.Products
-import Mathbin.CategoryTheory.Limits.Shapes.Terminal
+import CategoryTheory.Limits.Shapes.WideEqualizers
+import CategoryTheory.Limits.Shapes.Products
+import CategoryTheory.Limits.Shapes.Terminal
 
 #align_import category_theory.limits.constructions.weakly_initial from "leanprover-community/mathlib"@"9d2f0748e6c50d7a2657c564b1ff2c695b39148d"

9d2f0748

bump to nightly-2023-07-20-09

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

9c56d0dd

Diff

@@ -2,16 +2,13 @@
 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.constructions.weakly_initial
-! leanprover-community/mathlib commit 9d2f0748e6c50d7a2657c564b1ff2c695b39148d
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Limits.Shapes.WideEqualizers
 import Mathbin.CategoryTheory.Limits.Shapes.Products
 import Mathbin.CategoryTheory.Limits.Shapes.Terminal
 
+#align_import category_theory.limits.constructions.weakly_initial from "leanprover-community/mathlib"@"9d2f0748e6c50d7a2657c564b1ff2c695b39148d"
+
 /-!
 # Constructions related to weakly initial objects

9d2f0748

bump to nightly-2023-06-01-16

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

b9c87c70

Diff

@@ -69,7 +69,7 @@ theorem hasInitial_of_weakly_initial_and_hasWideEqualizers [HasWideEqualizers.{v
       by
       rw [category.assoc, category.assoc]
       apply wide_equalizer.condition (id : endos → endos) (h ≫ e ≫ i)
-    rw [category.comp_id, cancel_mono_id i] at this
+    rw [category.comp_id, cancel_mono_id i] at this 
     haveI : is_split_epi e := is_split_epi.mk' ⟨i ≫ h, this⟩
     rw [← cancel_epi e]
     apply equalizer.condition

9d2f0748

bump to nightly-2023-04-28-02

mathlib commit https://github.com/leanprover-community/mathlib/commit/fa78268d4d77cb2b2fbc89f0527e2e7807763780

473bb540

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.constructions.weakly_initial
-! leanprover-community/mathlib commit 239d882c4fb58361ee8b3b39fb2091320edef10a
+! leanprover-community/mathlib commit 9d2f0748e6c50d7a2657c564b1ff2c695b39148d
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -15,6 +15,9 @@ import Mathbin.CategoryTheory.Limits.Shapes.Terminal
 /-!
 # Constructions related to weakly initial objects
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 This file gives constructions related to weakly initial objects, namely:
 * If a category has small products and a small weakly initial set of objects, then it has a weakly
   initial object.

239d882c

bump to nightly-2023-04-25-12

mathlib commit https://github.com/leanprover-community/mathlib/commit/2651125b48fc5c170ab1111afd0817c903b1fc6c

6f1c5349

Diff

@@ -32,6 +32,7 @@ open Limits
 
 variable {C : Type u} [Category.{v} C]
 
+#print CategoryTheory.has_weakly_initial_of_weakly_initial_set_and_hasProducts /-
 /--
 If `C` has (small) products and a small weakly initial set of objects, then it has a weakly initial
 object.
@@ -40,7 +41,9 @@ theorem has_weakly_initial_of_weakly_initial_set_and_hasProducts [HasProducts.{v
     {B : ι → C} (hB : ∀ A : C, ∃ i, Nonempty (B i ⟶ A)) : ∃ T : C, ∀ X, Nonempty (T ⟶ X) :=
   ⟨∏ B, fun X => ⟨Pi.π _ _ ≫ (hB X).choose_spec.some⟩⟩
 #align category_theory.has_weakly_initial_of_weakly_initial_set_and_has_products CategoryTheory.has_weakly_initial_of_weakly_initial_set_and_hasProducts
+-/
 
+#print CategoryTheory.hasInitial_of_weakly_initial_and_hasWideEqualizers /-
 /-- If `C` has (small) wide equalizers and a weakly initial object, then it has an initial object.
 
 The initial object is constructed as the wide equalizer of all endomorphisms on the given weakly
@@ -69,6 +72,7 @@ theorem hasInitial_of_weakly_initial_and_hasWideEqualizers [HasWideEqualizers.{v
     apply equalizer.condition
   exact has_initial_of_unique (wide_equalizer (id : endos → endos))
 #align category_theory.has_initial_of_weakly_initial_and_has_wide_equalizers CategoryTheory.hasInitial_of_weakly_initial_and_hasWideEqualizers
+-/
 
 end CategoryTheory

239d882c

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

239d882c

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

@@ -2,16 +2,13 @@
 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.constructions.weakly_initial
-! leanprover-community/mathlib commit 239d882c4fb58361ee8b3b39fb2091320edef10a
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Limits.Shapes.WideEqualizers
 import Mathlib.CategoryTheory.Limits.Shapes.Products
 import Mathlib.CategoryTheory.Limits.Shapes.Terminal
 
+#align_import category_theory.limits.constructions.weakly_initial from "leanprover-community/mathlib"@"239d882c4fb58361ee8b3b39fb2091320edef10a"
+
 /-!
 # Constructions related to weakly initial objects

239d882c

feat: port CategoryTheory.Limits.Constructions.WeaklyInitial (#3627)

Co-authored-by: qawbecrdtey <qawbecrdtey@naver.com> Co-authored-by: Joël Riou <joel.riou@universite-paris-saclay.fr>

6137962d

`category_theory.limits.constructions.weakly_initial` ⟷ `Mathlib.CategoryTheory.Limits.Constructions.WeaklyInitial`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 86

category_theory.limits.constructions.weakly_initial ⟷ Mathlib.CategoryTheory.Limits.Constructions.WeaklyInitial

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 86

`category_theory.limits.constructions.weakly_initial` ⟷ `Mathlib.CategoryTheory.Limits.Constructions.WeaklyInitial`