category_theory.limits.constructions.filtered

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

e4ee4e30

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

10bf4f82

bump to nightly-2024-02-01-06

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

5433bded

Diff

@@ -83,7 +83,8 @@ open CoproductsFromFiniteFiltered
 
 #print CategoryTheory.Limits.hasCoproducts_of_finite_and_filtered /-
 theorem hasCoproducts_of_finite_and_filtered [HasFiniteCoproducts C]
-    [HasFilteredColimitsOfSize.{w, w} C] : HasCoproducts.{w} C := fun α => by classical
+    [HasFilteredColimitsOfSize.{w, w} C] : HasCoproducts.{w} C := fun α => by
+  classical exact ⟨fun F => has_colimit.mk (lift_to_finset_colimit_cocone F)⟩
 #align category_theory.limits.has_coproducts_of_finite_and_filtered CategoryTheory.Limits.hasCoproducts_of_finite_and_filtered
 -/

10bf4f82

bump to nightly-2024-01-31-06

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

61100fe9

Diff

@@ -83,8 +83,7 @@ open CoproductsFromFiniteFiltered
 
 #print CategoryTheory.Limits.hasCoproducts_of_finite_and_filtered /-
 theorem hasCoproducts_of_finite_and_filtered [HasFiniteCoproducts C]
-    [HasFilteredColimitsOfSize.{w, w} C] : HasCoproducts.{w} C := fun α => by
-  classical exact ⟨fun F => has_colimit.mk (lift_to_finset_colimit_cocone F)⟩
+    [HasFilteredColimitsOfSize.{w, w} C] : HasCoproducts.{w} C := fun α => by classical
 #align category_theory.limits.has_coproducts_of_finite_and_filtered CategoryTheory.Limits.hasCoproducts_of_finite_and_filtered
 -/

10bf4f82

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 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 -/
-import Mathbin.CategoryTheory.Limits.Constructions.LimitsOfProductsAndEqualizers
-import Mathbin.CategoryTheory.Limits.Opposites
+import CategoryTheory.Limits.Constructions.LimitsOfProductsAndEqualizers
+import CategoryTheory.Limits.Opposites
 
 #align_import category_theory.limits.constructions.filtered from "leanprover-community/mathlib"@"10bf4f825ad729c5653adc039dafa3622e7f93c9"

10bf4f82

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 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
-
-! This file was ported from Lean 3 source module category_theory.limits.constructions.filtered
-! leanprover-community/mathlib commit 10bf4f825ad729c5653adc039dafa3622e7f93c9
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Limits.Constructions.LimitsOfProductsAndEqualizers
 import Mathbin.CategoryTheory.Limits.Opposites
 
+#align_import category_theory.limits.constructions.filtered from "leanprover-community/mathlib"@"10bf4f825ad729c5653adc039dafa3622e7f93c9"
+
 /-!
 # Constructing colimits from finite colimits and filtered colimits

10bf4f82

bump to nightly-2023-06-20-01

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

9b351f8c

Diff

@@ -73,7 +73,7 @@ def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize
           { pt := s.pt
             ι := { app := fun t => Sigma.desc fun x => s.ι.app x } }
       uniq := fun s m h => by
-        ext (t⟨⟨j, hj⟩⟩)
+        ext t ⟨⟨j, hj⟩⟩
         convert h j using 1
         · simp [← colimit.w (lift_to_finset F) ⟨⟨Finset.singleton_subset_iff.2 hj⟩⟩]; rfl
         · tidy }

10bf4f82

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -75,8 +75,7 @@ def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize
       uniq := fun s m h => by
         ext (t⟨⟨j, hj⟩⟩)
         convert h j using 1
-        · simp [← colimit.w (lift_to_finset F) ⟨⟨Finset.singleton_subset_iff.2 hj⟩⟩]
-          rfl
+        · simp [← colimit.w (lift_to_finset F) ⟨⟨Finset.singleton_subset_iff.2 hj⟩⟩]; rfl
         · tidy }
 #align category_theory.limits.coproducts_from_finite_filtered.lift_to_finset_colimit_cocone CategoryTheory.Limits.CoproductsFromFiniteFiltered.liftToFinsetColimitCocone
 -/

10bf4f82

bump to nightly-2023-03-16-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/ce7e9d53d4bbc38065db3b595cd5bd73c323bc1d

8ae28b0b

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 
 ! This file was ported from Lean 3 source module category_theory.limits.constructions.filtered
-! leanprover-community/mathlib commit e4ee4e30418efcb8cf304ba76ad653aeec04ba6e
+! leanprover-community/mathlib commit 10bf4f825ad729c5653adc039dafa3622e7f93c9
 ! 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.Opposites
 /-!
 # Constructing colimits from finite colimits and filtered colimits
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 We construct colimits of size `w` from finite colimits and filtered colimits of size `w`. Since
 `w`-sized colimits are constructured from coequalizers and `w`-sized coproducts, it suffices to
 construct `w`-sized coproducts from finite coproducts and `w`-sized filtered colimits.

e4ee4e30

bump to nightly-2023-03-13-18

mathlib commit https://github.com/leanprover-community/mathlib/commit/2af0836443b4cfb5feda0df0051acdb398304931

66e1e587

Diff

@@ -39,6 +39,7 @@ namespace CoproductsFromFiniteFiltered
 
 attribute [local tidy] tactic.case_bash
 
+#print CategoryTheory.Limits.CoproductsFromFiniteFiltered.liftToFinset /-
 /-- If `C` has finite coproducts, a functor `discrete α ⥤ C` lifts to a functor
     `finset (discrete α) ⥤ C` by taking coproducts. -/
 @[simps]
@@ -47,7 +48,9 @@ def liftToFinset [HasFiniteCoproducts C] (F : Discrete α ⥤ C) : Finset (Discr
   obj s := ∐ fun x : s => F.obj x
   map s t h := Sigma.desc fun y => Sigma.ι (fun x : t => F.obj x) ⟨y, h.down.down y.2⟩
 #align category_theory.limits.coproducts_from_finite_filtered.lift_to_finset CategoryTheory.Limits.CoproductsFromFiniteFiltered.liftToFinset
+-/
 
+#print CategoryTheory.Limits.CoproductsFromFiniteFiltered.liftToFinsetColimitCocone /-
 /-- If `C` has finite coproducts and filtered colimits, we can construct arbitrary coproducts by
     taking the colimit of the diagram formed by the coproducts of finite sets over the indexing
     type. -/
@@ -73,33 +76,42 @@ def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize
           rfl
         · tidy }
 #align category_theory.limits.coproducts_from_finite_filtered.lift_to_finset_colimit_cocone CategoryTheory.Limits.CoproductsFromFiniteFiltered.liftToFinsetColimitCocone
+-/
 
 end CoproductsFromFiniteFiltered
 
 open CoproductsFromFiniteFiltered
 
+#print CategoryTheory.Limits.hasCoproducts_of_finite_and_filtered /-
 theorem hasCoproducts_of_finite_and_filtered [HasFiniteCoproducts C]
     [HasFilteredColimitsOfSize.{w, w} C] : HasCoproducts.{w} C := fun α => by
   classical exact ⟨fun F => has_colimit.mk (lift_to_finset_colimit_cocone F)⟩
 #align category_theory.limits.has_coproducts_of_finite_and_filtered CategoryTheory.Limits.hasCoproducts_of_finite_and_filtered
+-/
 
+#print CategoryTheory.Limits.has_colimits_of_finite_and_filtered /-
 theorem has_colimits_of_finite_and_filtered [HasFiniteColimits C]
     [HasFilteredColimitsOfSize.{w, w} C] : HasColimitsOfSize.{w, w} C :=
   have : HasCoproducts.{w} C := hasCoproducts_of_finite_and_filtered
   has_colimits_of_has_coequalizers_and_coproducts
 #align category_theory.limits.has_colimits_of_finite_and_filtered CategoryTheory.Limits.has_colimits_of_finite_and_filtered
+-/
 
+#print CategoryTheory.Limits.hasProducts_of_finite_and_cofiltered /-
 theorem hasProducts_of_finite_and_cofiltered [HasFiniteProducts C]
     [HasCofilteredLimitsOfSize.{w, w} C] : HasProducts.{w} C :=
   have : HasCoproducts.{w} Cᵒᵖ := hasCoproducts_of_finite_and_filtered
   has_products_of_opposite
 #align category_theory.limits.has_products_of_finite_and_cofiltered CategoryTheory.Limits.hasProducts_of_finite_and_cofiltered
+-/
 
+#print CategoryTheory.Limits.has_limits_of_finite_and_cofiltered /-
 theorem has_limits_of_finite_and_cofiltered [HasFiniteLimits C]
     [HasCofilteredLimitsOfSize.{w, w} C] : HasLimitsOfSize.{w, w} C :=
   have : HasProducts.{w} C := hasProducts_of_finite_and_cofiltered
   has_limits_of_has_equalizers_and_products
 #align category_theory.limits.has_limits_of_finite_and_cofiltered CategoryTheory.Limits.has_limits_of_finite_and_cofiltered
+-/
 
 end CategoryTheory.Limits

e4ee4e30

bump to nightly-2023-02-28-22

mathlib commit https://github.com/leanprover-community/mathlib/commit/9da1b3534b65d9661eb8f42443598a92bbb49211

1fb1623f

Diff

@@ -56,7 +56,7 @@ def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize
     [DecidableEq α] (F : Discrete α ⥤ C) : ColimitCocone F
     where
   Cocone :=
-    { x := colimit (liftToFinset F)
+    { pt := colimit (liftToFinset F)
       ι :=
         Discrete.natTrans fun j =>
           @Sigma.ι _ _ _ (fun x : ({j} : Finset (Discrete α)) => F.obj x) _ ⟨j, by simp⟩ ≫
@@ -64,7 +64,7 @@ def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize
   IsColimit :=
     { desc := fun s =>
         colimit.desc (liftToFinset F)
-          { x := s.x
+          { pt := s.pt
             ι := { app := fun t => Sigma.desc fun x => s.ι.app x } }
       uniq := fun s m h => by
         ext (t⟨⟨j, hj⟩⟩)

e4ee4e30

bump to nightly-2023-02-27-08

mathlib commit https://github.com/leanprover-community/mathlib/commit/eb0cb4511aaef0da2462207b67358a0e1fe1e2ee

91d8c210

Diff

@@ -66,7 +66,7 @@ def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize
         colimit.desc (liftToFinset F)
           { x := s.x
             ι := { app := fun t => Sigma.desc fun x => s.ι.app x } }
-      uniq' := fun s m h => by
+      uniq := fun s m h => by
         ext (t⟨⟨j, hj⟩⟩)
         convert h j using 1
         · simp [← colimit.w (lift_to_finset F) ⟨⟨Finset.singleton_subset_iff.2 hj⟩⟩]
@@ -83,11 +83,11 @@ theorem hasCoproducts_of_finite_and_filtered [HasFiniteCoproducts C]
   classical exact ⟨fun F => has_colimit.mk (lift_to_finset_colimit_cocone F)⟩
 #align category_theory.limits.has_coproducts_of_finite_and_filtered CategoryTheory.Limits.hasCoproducts_of_finite_and_filtered
 
-theorem hasColimitsOfFiniteAndFiltered [HasFiniteColimits C] [HasFilteredColimitsOfSize.{w, w} C] :
-    HasColimitsOfSize.{w, w} C :=
+theorem has_colimits_of_finite_and_filtered [HasFiniteColimits C]
+    [HasFilteredColimitsOfSize.{w, w} C] : HasColimitsOfSize.{w, w} C :=
   have : HasCoproducts.{w} C := hasCoproducts_of_finite_and_filtered
   has_colimits_of_has_coequalizers_and_coproducts
-#align category_theory.limits.has_colimits_of_finite_and_filtered CategoryTheory.Limits.hasColimitsOfFiniteAndFiltered
+#align category_theory.limits.has_colimits_of_finite_and_filtered CategoryTheory.Limits.has_colimits_of_finite_and_filtered
 
 theorem hasProducts_of_finite_and_cofiltered [HasFiniteProducts C]
     [HasCofilteredLimitsOfSize.{w, w} C] : HasProducts.{w} C :=
@@ -95,11 +95,11 @@ theorem hasProducts_of_finite_and_cofiltered [HasFiniteProducts C]
   has_products_of_opposite
 #align category_theory.limits.has_products_of_finite_and_cofiltered CategoryTheory.Limits.hasProducts_of_finite_and_cofiltered
 
-theorem hasLimitsOfFiniteAndCofiltered [HasFiniteLimits C] [HasCofilteredLimitsOfSize.{w, w} C] :
-    HasLimitsOfSize.{w, w} C :=
+theorem has_limits_of_finite_and_cofiltered [HasFiniteLimits C]
+    [HasCofilteredLimitsOfSize.{w, w} C] : HasLimitsOfSize.{w, w} C :=
   have : HasProducts.{w} C := hasProducts_of_finite_and_cofiltered
   has_limits_of_has_equalizers_and_products
-#align category_theory.limits.has_limits_of_finite_and_cofiltered CategoryTheory.Limits.hasLimitsOfFiniteAndCofiltered
+#align category_theory.limits.has_limits_of_finite_and_cofiltered CategoryTheory.Limits.has_limits_of_finite_and_cofiltered
 
 end CategoryTheory.Limits

e4ee4e30

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

e4ee4e30

feat(Finset): add IsDirected instances (#6169)

This way IsDirected (Finset α) (· ≤ ·) doesn't need [DecidableEq α].

b7ec761f

Diff

@@ -48,7 +48,7 @@ def liftToFinset [HasFiniteCoproducts C] (F : Discrete α ⥤ C) : Finset (Discr
     type. -/
 @[simps!]
 def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize.{w, w} C]
-    [DecidableEq α] (F : Discrete α ⥤ C) : ColimitCocone F where
+    (F : Discrete α ⥤ C) : ColimitCocone F where
   cocone :=
     { pt := colimit (liftToFinset F)
       ι :=

e4ee4e30

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 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
-
-! This file was ported from Lean 3 source module category_theory.limits.constructions.filtered
-! leanprover-community/mathlib commit e4ee4e30418efcb8cf304ba76ad653aeec04ba6e
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Limits.Constructions.LimitsOfProductsAndEqualizers
 import Mathlib.CategoryTheory.Limits.Opposites
 
+#align_import category_theory.limits.constructions.filtered from "leanprover-community/mathlib"@"e4ee4e30418efcb8cf304ba76ad653aeec04ba6e"
+
 /-!
 # Constructing colimits from finite colimits and filtered colimits

e4ee4e30

chore: fix focusing dots (#5708)

This PR is the result of running

find . -type f -name "*.lean" -exec sed -i -E 's/^( +)\. /\1· /' {} \;
find . -type f -name "*.lean" -exec sed -i -E 'N;s/^( +·)\n +(.*)$/\1 \2/;P;D' {} \;

which firstly replaces . focusing dots with · and secondly removes isolated instances of such dots, unifying them with the following line. A new rule is placed in the style linter to verify this.

cb02d09e

Diff

@@ -70,9 +70,9 @@ def liftToFinsetColimitCocone [HasFiniteCoproducts C] [HasFilteredColimitsOfSize
         apply colimit.hom_ext
         rintro ⟨⟨j, hj⟩⟩
         convert h j using 1
-        . simp [← colimit.w (liftToFinset F) ⟨⟨Finset.singleton_subset_iff.2 hj⟩⟩]
+        · simp [← colimit.w (liftToFinset F) ⟨⟨Finset.singleton_subset_iff.2 hj⟩⟩]
           rfl
-        . aesop_cat }
+        · aesop_cat }
 #align category_theory.limits.coproducts_from_finite_filtered.lift_to_finset_colimit_cocone CategoryTheory.Limits.CoproductsFromFiniteFiltered.liftToFinsetColimitCocone
 
 end CoproductsFromFiniteFiltered

e4ee4e30

chore: fix many typos (#4967)

These are all doc fixes

6f9e51c3

Diff

@@ -15,7 +15,7 @@ import Mathlib.CategoryTheory.Limits.Opposites
 # Constructing colimits from finite colimits and filtered colimits
 
 We construct colimits of size `w` from finite colimits and filtered colimits of size `w`. Since
-`w`-sized colimits are constructured from coequalizers and `w`-sized coproducts, it suffices to
+`w`-sized colimits are constructed from coequalizers and `w`-sized coproducts, it suffices to
 construct `w`-sized coproducts from finite coproducts and `w`-sized filtered colimits.
 
 The idea is simple: to construct coproducts of shape `α`, we take the colimit of the filtered

e4ee4e30

feat: port CategoryTheory.Limits.Constructions.Filtered (#2832)

Co-authored-by: Parcly Taxel <reddeloostw@gmail.com> Co-authored-by: Joël Riou <joel.riou@universite-paris-saclay.fr>

7e31e657

`category_theory.limits.constructions.filtered` ⟷ `Mathlib.CategoryTheory.Limits.Constructions.Filtered`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 2 + 270

category_theory.limits.constructions.filtered ⟷ Mathlib.CategoryTheory.Limits.Constructions.Filtered

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 2 + 270

`category_theory.limits.constructions.filtered` ⟷ `Mathlib.CategoryTheory.Limits.Constructions.Filtered`