category_theory.limits.unit | 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

c85d2ff9

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

f4758115

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 CategoryTheory.Punit
+import CategoryTheory.PUnit
 import CategoryTheory.Limits.HasLimits
 
 #align_import category_theory.limits.unit from "leanprover-community/mathlib"@"f47581155c818e6361af4e4fda60d27d020c226b"

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) 2020 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison
 -/
-import Mathbin.CategoryTheory.Punit
-import Mathbin.CategoryTheory.Limits.HasLimits
+import CategoryTheory.Punit
+import CategoryTheory.Limits.HasLimits
 
 #align_import category_theory.limits.unit 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) 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 category_theory.limits.unit
-! 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.Punit
 import Mathbin.CategoryTheory.Limits.HasLimits
 
+#align_import category_theory.limits.unit from "leanprover-community/mathlib"@"f47581155c818e6361af4e4fda60d27d020c226b"
+
 /-!
 # `discrete punit` has limits and colimits

f4758115

bump to nightly-2023-06-13-09

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

395b4fcf

Diff

@@ -31,32 +31,32 @@ namespace CategoryTheory.Limits
 
 variable {J : Type v} [Category.{v'} J] {F : J ⥤ Discrete PUnit}
 
-#print CategoryTheory.Limits.pUnitCone /-
+#print CategoryTheory.Limits.punitCone /-
 /-- A trivial cone for a functor into `punit`. `punit_cone_is_limit` shows it is a limit. -/
-def pUnitCone : Cone F :=
-  ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).Hom⟩
-#align category_theory.limits.punit_cone CategoryTheory.Limits.pUnitCone
+def punitCone : Cone F :=
+  ⟨⟨⟨⟩⟩, (Functor.punitExt _ _).Hom⟩
+#align category_theory.limits.punit_cone CategoryTheory.Limits.punitCone
 -/
 
-#print CategoryTheory.Limits.pUnitCocone /-
+#print CategoryTheory.Limits.punitCocone /-
 /-- A trivial cocone for a functor into `punit`. `punit_cocone_is_limit` shows it is a colimit. -/
-def pUnitCocone : Cocone F :=
-  ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).Hom⟩
-#align category_theory.limits.punit_cocone CategoryTheory.Limits.pUnitCocone
+def punitCocone : Cocone F :=
+  ⟨⟨⟨⟩⟩, (Functor.punitExt _ _).Hom⟩
+#align category_theory.limits.punit_cocone CategoryTheory.Limits.punitCocone
 -/
 
-#print CategoryTheory.Limits.pUnitConeIsLimit /-
+#print CategoryTheory.Limits.punitConeIsLimit /-
 /-- Any cone over a functor into `punit` is a limit cone.
 -/
-def pUnitConeIsLimit {c : Cone F} : IsLimit c := by tidy
-#align category_theory.limits.punit_cone_is_limit CategoryTheory.Limits.pUnitConeIsLimit
+def punitConeIsLimit {c : Cone F} : IsLimit c := by tidy
+#align category_theory.limits.punit_cone_is_limit CategoryTheory.Limits.punitConeIsLimit
 -/
 
-#print CategoryTheory.Limits.pUnitCoconeIsColimit /-
+#print CategoryTheory.Limits.punitCoconeIsColimit /-
 /-- Any cocone over a functor into `punit` is a colimit cocone.
 -/
-def pUnitCoconeIsColimit {c : Cocone F} : IsColimit c := by tidy
-#align category_theory.limits.punit_cocone_is_colimit CategoryTheory.Limits.pUnitCoconeIsColimit
+def punitCoconeIsColimit {c : Cocone F} : IsColimit c := by tidy
+#align category_theory.limits.punit_cocone_is_colimit CategoryTheory.Limits.punitCoconeIsColimit
 -/
 
 instance : HasLimitsOfSize.{v', v} (Discrete PUnit) := by tidy

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: Scott Morrison
 
 ! This file was ported from Lean 3 source module category_theory.limits.unit
-! leanprover-community/mathlib commit c85d2ff93210de84373ab4c9c6dba2b78494961e
+! 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.HasLimits
 /-!
 # `discrete punit` has limits and colimits
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 Mostly for the sake of constructing trivial examples, we show all (co)cones into `discrete punit`
 are (co)limit (co)cones. We also show that such (co)cones exist, and that `discrete punit` has all
 (co)limits.

c85d2ff9

bump to nightly-2023-03-04-12

mathlib commit https://github.com/leanprover-community/mathlib/commit/62e8311c791f02c47451bf14aa2501048e7c2f33

726b2da6

Diff

@@ -28,25 +28,33 @@ namespace CategoryTheory.Limits
 
 variable {J : Type v} [Category.{v'} J] {F : J ⥤ Discrete PUnit}
 
+#print CategoryTheory.Limits.pUnitCone /-
 /-- A trivial cone for a functor into `punit`. `punit_cone_is_limit` shows it is a limit. -/
-def punitCone : Cone F :=
+def pUnitCone : Cone F :=
   ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).Hom⟩
-#align category_theory.limits.punit_cone CategoryTheory.Limits.punitCone
+#align category_theory.limits.punit_cone CategoryTheory.Limits.pUnitCone
+-/
 
+#print CategoryTheory.Limits.pUnitCocone /-
 /-- A trivial cocone for a functor into `punit`. `punit_cocone_is_limit` shows it is a colimit. -/
-def punitCocone : Cocone F :=
+def pUnitCocone : Cocone F :=
   ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).Hom⟩
-#align category_theory.limits.punit_cocone CategoryTheory.Limits.punitCocone
+#align category_theory.limits.punit_cocone CategoryTheory.Limits.pUnitCocone
+-/
 
+#print CategoryTheory.Limits.pUnitConeIsLimit /-
 /-- Any cone over a functor into `punit` is a limit cone.
 -/
-def punitConeIsLimit {c : Cone F} : IsLimit c := by tidy
-#align category_theory.limits.punit_cone_is_limit CategoryTheory.Limits.punitConeIsLimit
+def pUnitConeIsLimit {c : Cone F} : IsLimit c := by tidy
+#align category_theory.limits.punit_cone_is_limit CategoryTheory.Limits.pUnitConeIsLimit
+-/
 
+#print CategoryTheory.Limits.pUnitCoconeIsColimit /-
 /-- Any cocone over a functor into `punit` is a colimit cocone.
 -/
-def punitCoconeIsColimit {c : Cocone F} : IsColimit c := by tidy
-#align category_theory.limits.punit_cocone_is_colimit CategoryTheory.Limits.punitCoconeIsColimit
+def pUnitCoconeIsColimit {c : Cocone F} : IsColimit c := by tidy
+#align category_theory.limits.punit_cocone_is_colimit CategoryTheory.Limits.pUnitCoconeIsColimit
+-/
 
 instance : HasLimitsOfSize.{v', v} (Discrete PUnit) := by tidy

c85d2ff9

bump to nightly-2023-02-21-20

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

7f7a4bc1

Diff

@@ -30,12 +30,12 @@ variable {J : Type v} [Category.{v'} J] {F : J ⥤ Discrete PUnit}
 
 /-- A trivial cone for a functor into `punit`. `punit_cone_is_limit` shows it is a limit. -/
 def punitCone : Cone F :=
-  ⟨⟨⟨⟩⟩, (Functor.punitExt _ _).Hom⟩
+  ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).Hom⟩
 #align category_theory.limits.punit_cone CategoryTheory.Limits.punitCone
 
 /-- A trivial cocone for a functor into `punit`. `punit_cocone_is_limit` shows it is a colimit. -/
 def punitCocone : Cocone F :=
-  ⟨⟨⟨⟩⟩, (Functor.punitExt _ _).Hom⟩
+  ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).Hom⟩
 #align category_theory.limits.punit_cocone CategoryTheory.Limits.punitCocone
 
 /-- Any cone over a functor into `punit` is a limit cone.

c85d2ff9

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

c85d2ff9

fix: attribute [simp] ... in -> attribute [local simp] ... in (#7678)

Mathlib.Logic.Unique contains the line attribute [simp] eq_iff_true_of_subsingleton in ...:

https://github.com/leanprover-community/mathlib4/blob/96a11c7aac574c00370c2b3dab483cb676405c5d/Mathlib/Logic/Unique.lean#L255-L256

Despite what the in part may imply, this adds the lemma to the simp set "globally", including for downstream files; it is likely that attribute [local simp] eq_iff_true_of_subsingleton in ... was meant instead (or maybe scoped simp, but I think "scoped" refers to the current namespace). Indeed, the relevant lemma is not marked with @[simp] for possible slowness: https://github.com/leanprover/std4/blob/846e9e1d6bb534774d1acd2dc430e70987da3c18/Std/Logic.lean#L749. Adding it to the simp set causes the example at https://leanprover.zulipchat.com/#narrow/stream/287929-mathlib4/topic/Regression.20in.20simp to slow down.

This PR changes this and fixes the relevant downstream simps. There was also one ocurrence of attribute [simp] FullSubcategory.comp_def FullSubcategory.id_def in in Mathlib.CategoryTheory.Monoidal.Subcategory but that was much easier to fix.

https://github.com/leanprover-community/mathlib4/blob/bc49eb9ba756a233370b4b68bcdedd60402f71ed/Mathlib/CategoryTheory/Monoidal/Subcategory.lean#L118-L119

1fe87718

Diff

@@ -38,13 +38,13 @@ def punitCocone : Cocone F :=
 /-- Any cone over a functor into `PUnit` is a limit cone.
 -/
 def punitConeIsLimit {c : Cone F} : IsLimit c where
-  lift := fun s => eqToHom (by simp)
+  lift := fun s => eqToHom (by simp [eq_iff_true_of_subsingleton])
 #align category_theory.limits.punit_cone_is_limit CategoryTheory.Limits.punitConeIsLimit
 
 /-- Any cocone over a functor into `PUnit` is a colimit cocone.
 -/
 def punitCoconeIsColimit {c : Cocone F} : IsColimit c where
-  desc := fun s => eqToHom (by simp)
+  desc := fun s => eqToHom (by simp [eq_iff_true_of_subsingleton])
 #align category_theory.limits.punit_cocone_is_colimit CategoryTheory.Limits.punitCoconeIsColimit
 
 instance : HasLimitsOfSize.{v', v} (Discrete PUnit) :=

c85d2ff9

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 category_theory.limits.unit
-! leanprover-community/mathlib commit c85d2ff93210de84373ab4c9c6dba2b78494961e
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.PUnit
 import Mathlib.CategoryTheory.Limits.HasLimits
 
+#align_import category_theory.limits.unit from "leanprover-community/mathlib"@"c85d2ff93210de84373ab4c9c6dba2b78494961e"
+
 /-!
 # `Discrete PUnit` has limits and colimits

c85d2ff9

chore: tidy various files (#4997)

95de1dee

Diff

@@ -28,32 +28,32 @@ namespace CategoryTheory.Limits
 
 variable {J : Type v} [Category.{v'} J] {F : J ⥤ Discrete PUnit}
 
-/-- A trivial cone for a functor into `PUnit`. `pUnitConeIsLimit` shows it is a limit. -/
-def pUnitCone : Cone F :=
-  ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).hom⟩
-#align category_theory.limits.punit_cone CategoryTheory.Limits.pUnitCone
+/-- A trivial cone for a functor into `PUnit`. `punitConeIsLimit` shows it is a limit. -/
+def punitCone : Cone F :=
+  ⟨⟨⟨⟩⟩, (Functor.punitExt _ _).hom⟩
+#align category_theory.limits.punit_cone CategoryTheory.Limits.punitCone
 
-/-- A trivial cocone for a functor into `PUnit`. `pUnitCoconeIsLimit` shows it is a colimit. -/
-def pUnitCocone : Cocone F :=
-  ⟨⟨⟨⟩⟩, (Functor.pUnitExt _ _).hom⟩
-#align category_theory.limits.punit_cocone CategoryTheory.Limits.pUnitCocone
+/-- A trivial cocone for a functor into `PUnit`. `punitCoconeIsLimit` shows it is a colimit. -/
+def punitCocone : Cocone F :=
+  ⟨⟨⟨⟩⟩, (Functor.punitExt _ _).hom⟩
+#align category_theory.limits.punit_cocone CategoryTheory.Limits.punitCocone
 
 /-- Any cone over a functor into `PUnit` is a limit cone.
 -/
-def pUnitConeIsLimit {c : Cone F} : IsLimit c where
+def punitConeIsLimit {c : Cone F} : IsLimit c where
   lift := fun s => eqToHom (by simp)
-#align category_theory.limits.punit_cone_is_limit CategoryTheory.Limits.pUnitConeIsLimit
+#align category_theory.limits.punit_cone_is_limit CategoryTheory.Limits.punitConeIsLimit
 
 /-- Any cocone over a functor into `PUnit` is a colimit cocone.
 -/
-def pUnitCoconeIsColimit {c : Cocone F} : IsColimit c where
+def punitCoconeIsColimit {c : Cocone F} : IsColimit c where
   desc := fun s => eqToHom (by simp)
-#align category_theory.limits.punit_cocone_is_colimit CategoryTheory.Limits.pUnitCoconeIsColimit
+#align category_theory.limits.punit_cocone_is_colimit CategoryTheory.Limits.punitCoconeIsColimit
 
 instance : HasLimitsOfSize.{v', v} (Discrete PUnit) :=
-  ⟨fun _ _ => ⟨fun _ => ⟨pUnitCone, pUnitConeIsLimit⟩⟩⟩
+  ⟨fun _ _ => ⟨fun _ => ⟨punitCone, punitConeIsLimit⟩⟩⟩
 
 instance : HasColimitsOfSize.{v', v} (Discrete PUnit) :=
-  ⟨fun _ _ => ⟨fun _ => ⟨pUnitCocone, pUnitCoconeIsColimit⟩⟩⟩
+  ⟨fun _ _ => ⟨fun _ => ⟨punitCocone, punitCoconeIsColimit⟩⟩⟩
 
 end CategoryTheory.Limits

c85d2ff9

feat: port CategoryTheory.Limits.Unit (#2597)

cd0354b1

`category_theory.limits.unit` ⟷ `Mathlib.CategoryTheory.Limits.Unit`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 74

category_theory.limits.unit ⟷ Mathlib.CategoryTheory.Limits.Unit

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 74

`category_theory.limits.unit` ⟷ `Mathlib.CategoryTheory.Limits.Unit`