category_theory.category.galois_connection

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

d82b8787

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

3dadefa3

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) 2017 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Stephen Morgan, Scott Morrison, Johannes Hölzl, Reid Barton
 -/
-import Mathbin.CategoryTheory.Category.Preorder
-import Mathbin.CategoryTheory.Adjunction.Basic
-import Mathbin.Order.GaloisConnection
+import CategoryTheory.Category.Preorder
+import CategoryTheory.Adjunction.Basic
+import Order.GaloisConnection
 
 #align_import category_theory.category.galois_connection from "leanprover-community/mathlib"@"3dadefa3f544b1db6214777fe47910739b54c66a"

3dadefa3

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) 2017 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Stephen Morgan, Scott Morrison, Johannes Hölzl, Reid Barton
-
-! This file was ported from Lean 3 source module category_theory.category.galois_connection
-! leanprover-community/mathlib commit 3dadefa3f544b1db6214777fe47910739b54c66a
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Category.Preorder
 import Mathbin.CategoryTheory.Adjunction.Basic
 import Mathbin.Order.GaloisConnection
 
+#align_import category_theory.category.galois_connection from "leanprover-community/mathlib"@"3dadefa3f544b1db6214777fe47910739b54c66a"
+
 /-!
 
 # Galois connections between preorders are adjunctions.

3dadefa3

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -48,12 +48,14 @@ namespace CategoryTheory
 
 variable {X : Type u} {Y : Type v} [Preorder X] [Preorder Y]
 
+#print CategoryTheory.Adjunction.gc /-
 /-- An adjunction between preorder categories induces a galois connection.
 -/
 theorem Adjunction.gc {L : X ⥤ Y} {R : Y ⥤ X} (adj : L ⊣ R) : GaloisConnection L.obj R.obj :=
   fun x y =>
   ⟨fun h => ((adj.homEquiv x y).toFun h.Hom).le, fun h => ((adj.homEquiv x y).invFun h.Hom).le⟩
 #align category_theory.adjunction.gc CategoryTheory.Adjunction.gc
+-/
 
 end CategoryTheory

3dadefa3

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -48,12 +48,6 @@ namespace CategoryTheory
 
 variable {X : Type u} {Y : Type v} [Preorder X] [Preorder Y]
 
-/- warning: category_theory.adjunction.gc -> CategoryTheory.Adjunction.gc is a dubious translation:
-lean 3 declaration is
-  forall {X : Type.{u1}} {Y : Type.{u2}} [_inst_1 : Preorder.{u1} X] [_inst_2 : Preorder.{u2} Y] {L : CategoryTheory.Functor.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2)} {R : CategoryTheory.Functor.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1)}, (CategoryTheory.Adjunction.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L R) -> (GaloisConnection.{u1, u2} X Y _inst_1 _inst_2 (CategoryTheory.Functor.obj.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L) (CategoryTheory.Functor.obj.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1) R))
-but is expected to have type
-  forall {X : Type.{u1}} {Y : Type.{u2}} [_inst_1 : Preorder.{u1} X] [_inst_2 : Preorder.{u2} Y] {L : CategoryTheory.Functor.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2)} {R : CategoryTheory.Functor.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1)}, (CategoryTheory.Adjunction.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L R) -> (GaloisConnection.{u1, u2} X Y _inst_1 _inst_2 (Prefunctor.obj.{succ u1, succ u2, u1, u2} X (CategoryTheory.CategoryStruct.toQuiver.{u1, u1} X (CategoryTheory.Category.toCategoryStruct.{u1, u1} X (Preorder.smallCategory.{u1} X _inst_1))) Y (CategoryTheory.CategoryStruct.toQuiver.{u2, u2} Y (CategoryTheory.Category.toCategoryStruct.{u2, u2} Y (Preorder.smallCategory.{u2} Y _inst_2))) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L)) (Prefunctor.obj.{succ u2, succ u1, u2, u1} Y (CategoryTheory.CategoryStruct.toQuiver.{u2, u2} Y (CategoryTheory.Category.toCategoryStruct.{u2, u2} Y (Preorder.smallCategory.{u2} Y _inst_2))) X (CategoryTheory.CategoryStruct.toQuiver.{u1, u1} X (CategoryTheory.Category.toCategoryStruct.{u1, u1} X (Preorder.smallCategory.{u1} X _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1) R)))
-Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.gc CategoryTheory.Adjunction.gcₓ'. -/
 /-- An adjunction between preorder categories induces a galois connection.
 -/
 theorem Adjunction.gc {L : X ⥤ Y} {R : Y ⥤ X} (adj : L ⊣ R) : GaloisConnection L.obj R.obj :=

3dadefa3

bump to nightly-2023-02-24-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/22131150f88a2d125713ffa0f4693e3355b1eb49

2d8bd121

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Stephen Morgan, Scott Morrison, Johannes Hölzl, Reid Barton
 
 ! This file was ported from Lean 3 source module category_theory.category.galois_connection
-! leanprover-community/mathlib commit d82b87871d9a274884dff5263fa4f5d93bcce1d6
+! leanprover-community/mathlib commit 3dadefa3f544b1db6214777fe47910739b54c66a
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -16,6 +16,9 @@ import Mathbin.Order.GaloisConnection
 
 # Galois connections between preorders are adjunctions.
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 * `galois_connection.adjunction` is the adjunction associated to a galois connection.
 
 -/

d82b8787

bump to nightly-2023-02-22-16

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

29633a96

Diff

@@ -27,6 +27,7 @@ section
 
 variable {X : Type u} {Y : Type v} [Preorder X] [Preorder Y]
 
+#print GaloisConnection.adjunction /-
 /-- A galois connection between preorders induces an adjunction between the associated categories.
 -/
 def GaloisConnection.adjunction {l : X → Y} {u : Y → X} (gc : GaloisConnection l u) :
@@ -36,6 +37,7 @@ def GaloisConnection.adjunction {l : X → Y} {u : Y → X} (gc : GaloisConnecti
       homEquiv := fun X Y =>
         ⟨fun f => (gc.le_u f.le).Hom, fun f => (gc.l_le f.le).Hom, by tidy, by tidy⟩ }
 #align galois_connection.adjunction GaloisConnection.adjunction
+-/
 
 end
 
@@ -43,6 +45,12 @@ namespace CategoryTheory
 
 variable {X : Type u} {Y : Type v} [Preorder X] [Preorder Y]
 
+/- warning: category_theory.adjunction.gc -> CategoryTheory.Adjunction.gc is a dubious translation:
+lean 3 declaration is
+  forall {X : Type.{u1}} {Y : Type.{u2}} [_inst_1 : Preorder.{u1} X] [_inst_2 : Preorder.{u2} Y] {L : CategoryTheory.Functor.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2)} {R : CategoryTheory.Functor.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1)}, (CategoryTheory.Adjunction.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L R) -> (GaloisConnection.{u1, u2} X Y _inst_1 _inst_2 (CategoryTheory.Functor.obj.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L) (CategoryTheory.Functor.obj.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1) R))
+but is expected to have type
+  forall {X : Type.{u1}} {Y : Type.{u2}} [_inst_1 : Preorder.{u1} X] [_inst_2 : Preorder.{u2} Y] {L : CategoryTheory.Functor.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2)} {R : CategoryTheory.Functor.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1)}, (CategoryTheory.Adjunction.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L R) -> (GaloisConnection.{u1, u2} X Y _inst_1 _inst_2 (Prefunctor.obj.{succ u1, succ u2, u1, u2} X (CategoryTheory.CategoryStruct.toQuiver.{u1, u1} X (CategoryTheory.Category.toCategoryStruct.{u1, u1} X (Preorder.smallCategory.{u1} X _inst_1))) Y (CategoryTheory.CategoryStruct.toQuiver.{u2, u2} Y (CategoryTheory.Category.toCategoryStruct.{u2, u2} Y (Preorder.smallCategory.{u2} Y _inst_2))) (CategoryTheory.Functor.toPrefunctor.{u1, u2, u1, u2} X (Preorder.smallCategory.{u1} X _inst_1) Y (Preorder.smallCategory.{u2} Y _inst_2) L)) (Prefunctor.obj.{succ u2, succ u1, u2, u1} Y (CategoryTheory.CategoryStruct.toQuiver.{u2, u2} Y (CategoryTheory.Category.toCategoryStruct.{u2, u2} Y (Preorder.smallCategory.{u2} Y _inst_2))) X (CategoryTheory.CategoryStruct.toQuiver.{u1, u1} X (CategoryTheory.Category.toCategoryStruct.{u1, u1} X (Preorder.smallCategory.{u1} X _inst_1))) (CategoryTheory.Functor.toPrefunctor.{u2, u1, u2, u1} Y (Preorder.smallCategory.{u2} Y _inst_2) X (Preorder.smallCategory.{u1} X _inst_1) R)))
+Case conversion may be inaccurate. Consider using '#align category_theory.adjunction.gc CategoryTheory.Adjunction.gcₓ'. -/
 /-- An adjunction between preorder categories induces a galois connection.
 -/
 theorem Adjunction.gc {L : X ⥤ Y} {R : Y ⥤ X} (adj : L ⊣ R) : GaloisConnection L.obj R.obj :=

d82b8787

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

d82b8787

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) 2017 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Stephen Morgan, Scott Morrison, Johannes Hölzl, Reid Barton
-
-! This file was ported from Lean 3 source module category_theory.category.galois_connection
-! leanprover-community/mathlib commit d82b87871d9a274884dff5263fa4f5d93bcce1d6
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Category.Preorder
 import Mathlib.CategoryTheory.Adjunction.Basic
 import Mathlib.Order.GaloisConnection
 
+#align_import category_theory.category.galois_connection from "leanprover-community/mathlib"@"d82b87871d9a274884dff5263fa4f5d93bcce1d6"
+
 /-!
 
 # Galois connections between preorders are adjunctions.

d82b8787

feat: port CategoryTheory.Category.GaloisConnection (#2440)

Co-authored-by: Moritz Firsching <firsching@google.com>

bc5bc3ce

`category_theory.category.galois_connection` ⟷ `Mathlib.CategoryTheory.Category.GaloisConnection`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 69

category_theory.category.galois_connection ⟷ Mathlib.CategoryTheory.Category.GaloisConnection

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 69

`category_theory.category.galois_connection` ⟷ `Mathlib.CategoryTheory.Category.GaloisConnection`