topology.sheaves.sheafify | 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

bb103f35

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

5c1efce1

bump to nightly-2024-03-17-08

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

22f01ce4

Diff

@@ -123,11 +123,11 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
   rcases hU ⟨x, U.2⟩ with ⟨U', mU, iU, gU, wU⟩
   rcases hV ⟨x, V.2⟩ with ⟨V', mV, iV, gV, wV⟩
   have wUx := wU ⟨x, mU⟩
-  dsimp at wUx ; erw [wUx] at e ; clear wUx
+  dsimp at wUx; erw [wUx] at e; clear wUx
   have wVx := wV ⟨x, mV⟩
-  dsimp at wVx ; erw [wVx] at e ; clear wVx
+  dsimp at wVx; erw [wVx] at e; clear wVx
   rcases F.germ_eq x mU mV gU gV e with ⟨W, mW, iU', iV', e'⟩
-  dsimp at e' 
+  dsimp at e'
   use⟨W ⊓ (U' ⊓ V'), ⟨mW, mU, mV⟩⟩
   refine' ⟨_, _, _⟩
   · change W ⊓ (U' ⊓ V') ⟶ U.obj
@@ -137,9 +137,9 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
   · intro w
     dsimp
     specialize wU ⟨w.1, w.2.2.1⟩
-    dsimp at wU 
+    dsimp at wU
     specialize wV ⟨w.1, w.2.2.2⟩
-    dsimp at wV 
+    dsimp at wV
     erw [wU, ← F.germ_res iU' ⟨w, w.2.1⟩, wV, ← F.germ_res iV' ⟨w, w.2.1⟩,
       CategoryTheory.types_comp_apply, CategoryTheory.types_comp_apply, e']
 #align Top.presheaf.stalk_to_fiber_injective TopCat.Presheaf.stalkToFiber_injective

5c1efce1

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.Topology.Sheaves.LocalPredicate
-import Mathbin.Topology.Sheaves.Stalks
+import Topology.Sheaves.LocalPredicate
+import Topology.Sheaves.Stalks
 
 #align_import topology.sheaves.sheafify from "leanprover-community/mathlib"@"5c1efce12ba86d4901463f61019832f6a4b1a0d0"

5c1efce1

bump to nightly-2023-08-02-01

mathlib commit https://github.com/leanprover-community/mathlib/commit/63721b2c3eba6c325ecf8ae8cca27155a4f6306f

7aca3f15

Diff

@@ -108,7 +108,7 @@ theorem stalkToFiber_surjective (x : X) : Function.Surjective (F.stalkToFiber x)
   apply stalk_to_fiber_surjective
   intro t
   obtain ⟨U, m, s, rfl⟩ := F.germ_exist _ t
-  · use ⟨U, m⟩
+  · use⟨U, m⟩
     fconstructor
     · exact fun y => F.germ y s
     · exact ⟨prelocal_predicate.sheafify_of ⟨s, fun _ => rfl⟩, rfl⟩
@@ -128,7 +128,7 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
   dsimp at wVx ; erw [wVx] at e ; clear wVx
   rcases F.germ_eq x mU mV gU gV e with ⟨W, mW, iU', iV', e'⟩
   dsimp at e' 
-  use ⟨W ⊓ (U' ⊓ V'), ⟨mW, mU, mV⟩⟩
+  use⟨W ⊓ (U' ⊓ V'), ⟨mW, mU, mV⟩⟩
   refine' ⟨_, _, _⟩
   · change W ⊓ (U' ⊓ V') ⟶ U.obj
     exact opens.inf_le_right _ _ ≫ opens.inf_le_left _ _ ≫ iU

5c1efce1

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 topology.sheaves.sheafify
-! leanprover-community/mathlib commit 5c1efce12ba86d4901463f61019832f6a4b1a0d0
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Topology.Sheaves.LocalPredicate
 import Mathbin.Topology.Sheaves.Stalks
 
+#align_import topology.sheaves.sheafify from "leanprover-community/mathlib"@"5c1efce12ba86d4901463f61019832f6a4b1a0d0"
+
 /-!
 # Sheafification of `Type` valued presheaves

5c1efce1

bump to nightly-2023-06-20-01

mathlib commit https://github.com/leanprover-community/mathlib/commit/2a0ce625dbb0ffbc7d1316597de0b25c1ec75303

9b351f8c

Diff

@@ -92,7 +92,7 @@ sending each section to its germs.
 def toSheafify : F ⟶ F.sheafify.1
     where
   app U f := ⟨fun x => F.germ x f, PrelocalPredicate.sheafifyOf ⟨f, fun x => rfl⟩⟩
-  naturality' U U' f := by ext (x⟨u, m⟩); exact germ_res_apply F f.unop ⟨u, m⟩ x
+  naturality' U U' f := by ext x ⟨u, m⟩; exact germ_res_apply F f.unop ⟨u, m⟩ x
 #align Top.presheaf.to_sheafify TopCat.Presheaf.toSheafify
 -/

5c1efce1

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -84,6 +84,7 @@ def sheafify : Sheaf (Type v) X :=
 #align Top.presheaf.sheafify TopCat.Presheaf.sheafify
 -/
 
+#print TopCat.Presheaf.toSheafify /-
 /-- The morphism from a presheaf to its sheafification,
 sending each section to its germs.
 (This forms the unit of the adjunction.)
@@ -93,6 +94,7 @@ def toSheafify : F ⟶ F.sheafify.1
   app U f := ⟨fun x => F.germ x f, PrelocalPredicate.sheafifyOf ⟨f, fun x => rfl⟩⟩
   naturality' U U' f := by ext (x⟨u, m⟩); exact germ_res_apply F f.unop ⟨u, m⟩ x
 #align Top.presheaf.to_sheafify TopCat.Presheaf.toSheafify
+-/
 
 #print TopCat.Presheaf.stalkToFiber /-
 /-- The natural morphism from the stalk of the sheafification to the original stalk.

5c1efce1

bump to nightly-2023-06-04-18

mathlib commit https://github.com/leanprover-community/mathlib/commit/5f25c089cb34db4db112556f23c50d12da81b297

3fb4268b

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 topology.sheaves.sheafify
-! leanprover-community/mathlib commit bb103f356534a9a7d3596a672097e375290a4c3a
+! leanprover-community/mathlib commit 5c1efce12ba86d4901463f61019832f6a4b1a0d0
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -14,6 +14,9 @@ import Mathbin.Topology.Sheaves.Stalks
 /-!
 # Sheafification of `Type` valued presheaves
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 We construct the sheafification of a `Type` valued presheaf,
 as the subsheaf of dependent functions into the stalks
 consisting of functions which are locally germs.
@@ -49,6 +52,7 @@ namespace TopCat.Presheaf
 
 namespace Sheafify
 
+#print TopCat.Presheaf.Sheafify.isGerm /-
 /--
 The prelocal predicate on functions into the stalks, asserting that the function is equal to a germ.
 -/
@@ -58,22 +62,27 @@ def isGerm : PrelocalPredicate fun x => F.stalk x
   res := fun V U i f ⟨g, p⟩ =>
     ⟨F.map i.op g, fun x => (p (i x)).trans (F.germ_res_apply _ _ _).symm⟩
 #align Top.presheaf.sheafify.is_germ TopCat.Presheaf.Sheafify.isGerm
+-/
 
+#print TopCat.Presheaf.Sheafify.isLocallyGerm /-
 /-- The local predicate on functions into the stalks,
 asserting that the function is locally equal to a germ.
 -/
 def isLocallyGerm : LocalPredicate fun x => F.stalk x :=
   (isGerm F).sheafify
 #align Top.presheaf.sheafify.is_locally_germ TopCat.Presheaf.Sheafify.isLocallyGerm
+-/
 
 end Sheafify
 
+#print TopCat.Presheaf.sheafify /-
 /-- The sheafification of a `Type` valued presheaf, defined as the functions into the stalks which
 are locally equal to germs.
 -/
 def sheafify : Sheaf (Type v) X :=
   subsheafToTypes (Sheafify.isLocallyGerm F)
 #align Top.presheaf.sheafify TopCat.Presheaf.sheafify
+-/
 
 /-- The morphism from a presheaf to its sheafification,
 sending each section to its germs.
@@ -85,13 +94,16 @@ def toSheafify : F ⟶ F.sheafify.1
   naturality' U U' f := by ext (x⟨u, m⟩); exact germ_res_apply F f.unop ⟨u, m⟩ x
 #align Top.presheaf.to_sheafify TopCat.Presheaf.toSheafify
 
+#print TopCat.Presheaf.stalkToFiber /-
 /-- The natural morphism from the stalk of the sheafification to the original stalk.
 In `sheafify_stalk_iso` we show this is an isomorphism.
 -/
 def stalkToFiber (x : X) : F.sheafify.Presheaf.stalk x ⟶ F.stalk x :=
   stalkToFiber (Sheafify.isLocallyGerm F) x
 #align Top.presheaf.stalk_to_fiber TopCat.Presheaf.stalkToFiber
+-/
 
+#print TopCat.Presheaf.stalkToFiber_surjective /-
 theorem stalkToFiber_surjective (x : X) : Function.Surjective (F.stalkToFiber x) :=
   by
   apply stalk_to_fiber_surjective
@@ -102,7 +114,9 @@ theorem stalkToFiber_surjective (x : X) : Function.Surjective (F.stalkToFiber x)
     · exact fun y => F.germ y s
     · exact ⟨prelocal_predicate.sheafify_of ⟨s, fun _ => rfl⟩, rfl⟩
 #align Top.presheaf.stalk_to_fiber_surjective TopCat.Presheaf.stalkToFiber_surjective
+-/
 
+#print TopCat.Presheaf.stalkToFiber_injective /-
 theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :=
   by
   apply stalk_to_fiber_injective
@@ -130,12 +144,15 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
     erw [wU, ← F.germ_res iU' ⟨w, w.2.1⟩, wV, ← F.germ_res iV' ⟨w, w.2.1⟩,
       CategoryTheory.types_comp_apply, CategoryTheory.types_comp_apply, e']
 #align Top.presheaf.stalk_to_fiber_injective TopCat.Presheaf.stalkToFiber_injective
+-/
 
+#print TopCat.Presheaf.sheafifyStalkIso /-
 /-- The isomorphism betweeen a stalk of the sheafification and the original stalk.
 -/
 def sheafifyStalkIso (x : X) : F.sheafify.Presheaf.stalk x ≅ F.stalk x :=
   (Equiv.ofBijective _ ⟨stalkToFiber_injective _ _, stalkToFiber_surjective _ _⟩).toIso
 #align Top.presheaf.sheafify_stalk_iso TopCat.Presheaf.sheafifyStalkIso
+-/
 
 -- PROJECT functoriality, and that sheafification is the left adjoint of the forgetful functor.
 end TopCat.Presheaf

bb103f35

bump to nightly-2023-06-01-16

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

b9c87c70

Diff

@@ -110,11 +110,11 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
   rcases hU ⟨x, U.2⟩ with ⟨U', mU, iU, gU, wU⟩
   rcases hV ⟨x, V.2⟩ with ⟨V', mV, iV, gV, wV⟩
   have wUx := wU ⟨x, mU⟩
-  dsimp at wUx; erw [wUx] at e; clear wUx
+  dsimp at wUx ; erw [wUx] at e ; clear wUx
   have wVx := wV ⟨x, mV⟩
-  dsimp at wVx; erw [wVx] at e; clear wVx
+  dsimp at wVx ; erw [wVx] at e ; clear wVx
   rcases F.germ_eq x mU mV gU gV e with ⟨W, mW, iU', iV', e'⟩
-  dsimp at e'
+  dsimp at e' 
   use ⟨W ⊓ (U' ⊓ V'), ⟨mW, mU, mV⟩⟩
   refine' ⟨_, _, _⟩
   · change W ⊓ (U' ⊓ V') ⟶ U.obj
@@ -124,9 +124,9 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
   · intro w
     dsimp
     specialize wU ⟨w.1, w.2.2.1⟩
-    dsimp at wU
+    dsimp at wU 
     specialize wV ⟨w.1, w.2.2.2⟩
-    dsimp at wV
+    dsimp at wV 
     erw [wU, ← F.germ_res iU' ⟨w, w.2.1⟩, wV, ← F.germ_res iV' ⟨w, w.2.1⟩,
       CategoryTheory.types_comp_apply, CategoryTheory.types_comp_apply, e']
 #align Top.presheaf.stalk_to_fiber_injective TopCat.Presheaf.stalkToFiber_injective

bb103f35

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -82,9 +82,7 @@ sending each section to its germs.
 def toSheafify : F ⟶ F.sheafify.1
     where
   app U f := ⟨fun x => F.germ x f, PrelocalPredicate.sheafifyOf ⟨f, fun x => rfl⟩⟩
-  naturality' U U' f := by
-    ext (x⟨u, m⟩)
-    exact germ_res_apply F f.unop ⟨u, m⟩ x
+  naturality' U U' f := by ext (x⟨u, m⟩); exact germ_res_apply F f.unop ⟨u, m⟩ x
 #align Top.presheaf.to_sheafify TopCat.Presheaf.toSheafify
 
 /-- The natural morphism from the stalk of the sheafification to the original stalk.

bb103f35

bump to nightly-2023-04-27-04

mathlib commit https://github.com/leanprover-community/mathlib/commit/9b2b58d6b14b895b2f375108e765cb47de71aebd

8f775de7

Diff

@@ -81,7 +81,7 @@ sending each section to its germs.
 -/
 def toSheafify : F ⟶ F.sheafify.1
     where
-  app U f := ⟨fun x => F.germ x f, PrelocalPredicate.sheafify_of ⟨f, fun x => rfl⟩⟩
+  app U f := ⟨fun x => F.germ x f, PrelocalPredicate.sheafifyOf ⟨f, fun x => rfl⟩⟩
   naturality' U U' f := by
     ext (x⟨u, m⟩)
     exact germ_res_apply F f.unop ⟨u, m⟩ x

bb103f35

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

bb103f35

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 topology.sheaves.sheafify
-! leanprover-community/mathlib commit bb103f356534a9a7d3596a672097e375290a4c3a
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Topology.Sheaves.LocalPredicate
 import Mathlib.Topology.Sheaves.Stalks
 
+#align_import topology.sheaves.sheafify from "leanprover-community/mathlib"@"bb103f356534a9a7d3596a672097e375290a4c3a"
+
 /-!
 # Sheafification of `Type` valued presheaves

bb103f35

chore: remove occurrences of semicolon after space (#5713)

This is the second half of the changes originally in #5699, removing all occurrences of ; after a space and implementing a linter rule to enforce it.

In most cases this 2-character substring has a space after it, so the following command was run first:

find . -type f -name "*.lean" -exec sed -i -E 's/ ; /; /g' {} \;

The remaining cases were few enough in number that they were done manually.

c795bd35

Diff

@@ -106,9 +106,9 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
   rcases hU ⟨x, U.2⟩ with ⟨U', mU, iU, gU, wU⟩
   rcases hV ⟨x, V.2⟩ with ⟨V', mV, iV, gV, wV⟩
   have wUx := wU ⟨x, mU⟩
-  dsimp at wUx ; erw [wUx] at e ; clear wUx
+  dsimp at wUx; erw [wUx] at e; clear wUx
   have wVx := wV ⟨x, mV⟩
-  dsimp at wVx ; erw [wVx] at e ; clear wVx
+  dsimp at wVx; erw [wVx] at e; clear wVx
   rcases F.germ_eq x mU mV gU gV e with ⟨W, mW, iU', iV', (e' : F.map iU'.op gU = F.map iV'.op gV)⟩
   use ⟨W ⊓ (U' ⊓ V'), ⟨mW, mU, mV⟩⟩
   refine' ⟨_, _, _⟩

bb103f35

chore: scope notations from category theory. (#5685)

Make sure in particular one can import Mathlib.Tactic for teaching without getting category theory notations in scope. Note that only two files needed an extra open.

5c108f1c

Diff

@@ -37,11 +37,7 @@ universe v
 
 noncomputable section
 
-open TopCat
-
-open Opposite
-
-open TopologicalSpace
+open TopCat Opposite TopologicalSpace CategoryTheory
 
 variable {X : TopCat.{v}} (F : Presheaf (Type v) X)

bb103f35

feat: change ConcreteCategory.hasCoeToFun to FunLike (#4693)

b7cba33a

Diff

@@ -113,8 +113,7 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
   dsimp at wUx ; erw [wUx] at e ; clear wUx
   have wVx := wV ⟨x, mV⟩
   dsimp at wVx ; erw [wVx] at e ; clear wVx
-  rcases F.germ_eq x mU mV gU gV e with ⟨W, mW, iU', iV', e'⟩
-  dsimp at e'
+  rcases F.germ_eq x mU mV gU gV e with ⟨W, mW, iU', iV', (e' : F.map iU'.op gU = F.map iV'.op gV)⟩
   use ⟨W ⊓ (U' ⊓ V'), ⟨mW, mU, mV⟩⟩
   refine' ⟨_, _, _⟩
   · change W ⊓ (U' ⊓ V') ⟶ U.obj
@@ -126,7 +125,7 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
     specialize wV ⟨w.1, w.2.2.2⟩
     dsimp at wU wV ⊢
     erw [wU, ← F.germ_res iU' ⟨w, w.2.1⟩, wV, ← F.germ_res iV' ⟨w, w.2.1⟩,
-      CategoryTheory.types_comp_apply, CategoryTheory.types_comp_apply, e']; rfl
+      CategoryTheory.types_comp_apply, CategoryTheory.types_comp_apply, e']
 #align Top.presheaf.stalk_to_fiber_injective TopCat.Presheaf.stalkToFiber_injective
 
 /-- The isomorphism between a stalk of the sheafification and the original stalk.

bb103f35

chore: fix many typos (#4967)

These are all doc fixes

6f9e51c3

Diff

@@ -129,7 +129,7 @@ theorem stalkToFiber_injective (x : X) : Function.Injective (F.stalkToFiber x) :
       CategoryTheory.types_comp_apply, CategoryTheory.types_comp_apply, e']; rfl
 #align Top.presheaf.stalk_to_fiber_injective TopCat.Presheaf.stalkToFiber_injective
 
-/-- The isomorphism betweeen a stalk of the sheafification and the original stalk.
+/-- The isomorphism between a stalk of the sheafification and the original stalk.
 -/
 def sheafifyStalkIso (x : X) : F.sheafify.presheaf.stalk x ≅ F.stalk x :=
   (Equiv.ofBijective _ ⟨stalkToFiber_injective _ _, stalkToFiber_surjective _ _⟩).toIso

bb103f35

feat: port Topology.Sheaves.Sheafify (#4624)

43023e84

`topology.sheaves.sheafify` ⟷ `Mathlib.Topology.Sheaves.Sheafify`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 11 + 830

topology.sheaves.sheafify ⟷ Mathlib.Topology.Sheaves.Sheafify

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 11 + 830

`topology.sheaves.sheafify` ⟷ `Mathlib.Topology.Sheaves.Sheafify`