category_theory.groupoid.basic | 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

740acc0e

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

e97cf15c

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) 2022 Rémi Bottinelli. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Rémi Bottinelli
 -/
-import Mathbin.CategoryTheory.Groupoid
-import Mathbin.Combinatorics.Quiver.Basic
+import CategoryTheory.Groupoid
+import Combinatorics.Quiver.Basic
 
 #align_import category_theory.groupoid.basic from "leanprover-community/mathlib"@"e97cf15cd1aec9bd5c193b2ffac5a6dc9118912b"

e97cf15c

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) 2022 Rémi Bottinelli. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Rémi Bottinelli
-
-! This file was ported from Lean 3 source module category_theory.groupoid.basic
-! leanprover-community/mathlib commit e97cf15cd1aec9bd5c193b2ffac5a6dc9118912b
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Groupoid
 import Mathbin.Combinatorics.Quiver.Basic
 
+#align_import category_theory.groupoid.basic from "leanprover-community/mathlib"@"e97cf15cd1aec9bd5c193b2ffac5a6dc9118912b"
+
 /-!
 > THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
 > Any changes to this file require a corresponding PR to mathlib4.

e97cf15c

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -27,6 +27,7 @@ variable (C : Type _) [Groupoid C]
 
 section Thin
 
+#print CategoryTheory.Groupoid.isThin_iff /-
 theorem isThin_iff : Quiver.IsThin C ↔ ∀ c : C, Subsingleton (c ⟶ c) :=
   by
   refine' ⟨fun h c => h c c, fun h c d => Subsingleton.intro fun f g => _⟩
@@ -36,6 +37,7 @@ theorem isThin_iff : Quiver.IsThin C ↔ ∀ c : C, Subsingleton (c ⟶ c) :=
     _ = f ≫ inv f ≫ g := by congr
     _ = g := by simp only [inv_eq_inv, is_iso.hom_inv_id_assoc]
 #align category_theory.groupoid.is_thin_iff CategoryTheory.Groupoid.isThin_iff
+-/
 
 end Thin

e97cf15c

bump to nightly-2023-06-09-07

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

16afdc39

Diff

@@ -35,7 +35,6 @@ theorem isThin_iff : Quiver.IsThin C ↔ ∀ c : C, Subsingleton (c ⟶ c) :=
     f = f ≫ inv g ≫ g := by simp only [inv_eq_inv, is_iso.inv_hom_id, category.comp_id]
     _ = f ≫ inv f ≫ g := by congr
     _ = g := by simp only [inv_eq_inv, is_iso.hom_inv_id_assoc]
-    
 #align category_theory.groupoid.is_thin_iff CategoryTheory.Groupoid.isThin_iff
 
 end Thin

e97cf15c

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -27,12 +27,6 @@ variable (C : Type _) [Groupoid C]
 
 section Thin
 
-/- warning: category_theory.groupoid.is_thin_iff -> CategoryTheory.Groupoid.isThin_iff is a dubious translation:
-lean 3 declaration is
-  forall (C : Type.{u1}) [_inst_1 : CategoryTheory.Groupoid.{u2, u1} C], Iff (Quiver.IsThin.{u1, succ u2} C (CategoryTheory.CategoryStruct.toQuiver.{u2, u1} C (CategoryTheory.Category.toCategoryStruct.{u2, u1} C (CategoryTheory.Groupoid.toCategory.{u2, u1} C _inst_1)))) (forall (c : C), Subsingleton.{succ u2} (Quiver.Hom.{succ u2, u1} C (CategoryTheory.CategoryStruct.toQuiver.{u2, u1} C (CategoryTheory.Category.toCategoryStruct.{u2, u1} C (CategoryTheory.Groupoid.toCategory.{u2, u1} C _inst_1))) c c))
-but is expected to have type
-  forall (C : Type.{u2}) [_inst_1 : CategoryTheory.Groupoid.{u1, u2} C], Iff (Quiver.IsThin.{u2, succ u1} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C (CategoryTheory.Groupoid.toCategory.{u1, u2} C _inst_1)))) (forall (c : C), Subsingleton.{succ u1} (Quiver.Hom.{succ u1, u2} C (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} C (CategoryTheory.Category.toCategoryStruct.{u1, u2} C (CategoryTheory.Groupoid.toCategory.{u1, u2} C _inst_1))) c c))
-Case conversion may be inaccurate. Consider using '#align category_theory.groupoid.is_thin_iff CategoryTheory.Groupoid.isThin_iffₓ'. -/
 theorem isThin_iff : Quiver.IsThin C ↔ ∀ c : C, Subsingleton (c ⟶ c) :=
   by
   refine' ⟨fun h c => h c c, fun h c d => Subsingleton.intro fun f g => _⟩

e97cf15c

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

740acc0e

chore: banish Type _ and Sort _ (#6499)

We remove all possible occurences of Type _ and Sort _ in favor of Type* and Sort*.

This has nice performance benefits.

32de3f67

Diff

@@ -16,7 +16,7 @@ namespace CategoryTheory
 
 namespace Groupoid
 
-variable (C : Type _) [Groupoid C]
+variable (C : Type*) [Groupoid C]
 
 section Thin

740acc0e

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) 2022 Rémi Bottinelli. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Rémi Bottinelli
-
-! This file was ported from Lean 3 source module category_theory.groupoid.basic
-! leanprover-community/mathlib commit 740acc0e6f9adf4423f92a485d0456fc271482da
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Groupoid
 import Mathlib.Combinatorics.Quiver.Basic
 
+#align_import category_theory.groupoid.basic from "leanprover-community/mathlib"@"740acc0e6f9adf4423f92a485d0456fc271482da"
+
 /-!
 This file defines a few basic properties of groupoids.
 -/

740acc0e

chore: bye-bye, solo bys! (#3825)

This PR puts, with one exception, every single remaining by that lies all by itself on its own line to the previous line, thus matching the current behaviour of start-port.sh. The exception is when the by begins the second or later argument to a tuple or anonymous constructor; see https://github.com/leanprover-community/mathlib4/pull/3825#discussion_r1186702599.

Essentially this is s/\n *by$/ by/g, but with manual editing to satisfy the linter's max-100-char-line requirement. The Python style linter is also modified to catch these "isolated bys".

14167e48

Diff

@@ -23,8 +23,7 @@ variable (C : Type _) [Groupoid C]
 
 section Thin
 
-theorem isThin_iff : Quiver.IsThin C ↔ ∀ c : C, Subsingleton (c ⟶ c) :=
-  by
+theorem isThin_iff : Quiver.IsThin C ↔ ∀ c : C, Subsingleton (c ⟶ c) := by
   refine' ⟨fun h c => h c c, fun h c d => Subsingleton.intro fun f g => _⟩
   haveI := h d
   calc

740acc0e

chore: fix #align lines (#3640)

This PR fixes two things:

Most align statements for definitions and theorems and instances that are separated by two newlines from the relevant declaration (s/\n\n#align/\n#align). This is often seen in the mathport output after ending calc blocks.
All remaining more-than-one-line #align statements. (This was needed for a script I wrote for #3630.)

2b42dc7c

Diff

@@ -32,7 +32,6 @@ theorem isThin_iff : Quiver.IsThin C ↔ ∀ c : C, Subsingleton (c ⟶ c) :=
     _ = f ≫ inv f ≫ g := by congr 1
                             simp only [inv_eq_inv, IsIso.inv_hom_id, eq_iff_true_of_subsingleton]
     _ = g := by simp only [inv_eq_inv, IsIso.hom_inv_id_assoc]
-
 #align category_theory.groupoid.is_thin_iff CategoryTheory.Groupoid.isThin_iff
 
 end Thin

740acc0e

feat: port CategoryTheory.Groupoid.Basic (#2335)

f0b02ef6

`category_theory.groupoid.basic` ⟷ `Mathlib.CategoryTheory.Groupoid.Basic`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 48

category_theory.groupoid.basic ⟷ Mathlib.CategoryTheory.Groupoid.Basic

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 48

`category_theory.groupoid.basic` ⟷ `Mathlib.CategoryTheory.Groupoid.Basic`