category_theory.limits.shapes.finite_products

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

ac3ae212

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

69c6a5a1

bump to nightly-2024-02-05-08

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

516c6ec2

Diff

@@ -29,7 +29,7 @@ namespace CategoryTheory.Limits
 variable (C : Type u) [Category.{v} C]
 
 #print CategoryTheory.Limits.HasFiniteProducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:404:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:400:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite products if there is a chosen limit for every diagram
 with shape `discrete J`, where we have `[finite J]`.
 
@@ -72,7 +72,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 -/
 
 #print CategoryTheory.Limits.HasFiniteCoproducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:404:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:400:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
 with shape `discrete J`, where we have `[fintype J]`.

69c6a5a1

bump to nightly-2023-12-23-06

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

b8c74971

Diff

@@ -29,7 +29,7 @@ namespace CategoryTheory.Limits
 variable (C : Type u) [Category.{v} C]
 
 #print CategoryTheory.Limits.HasFiniteProducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:404:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite products if there is a chosen limit for every diagram
 with shape `discrete J`, where we have `[finite J]`.
 
@@ -72,7 +72,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 -/
 
 #print CategoryTheory.Limits.HasFiniteCoproducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:404:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
 with shape `discrete J`, where we have `[fintype J]`.

69c6a5a1

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) 2019 Scott Morrison. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Scott Morrison
 -/
-import Mathbin.CategoryTheory.Limits.Shapes.FiniteLimits
-import Mathbin.CategoryTheory.Limits.Shapes.Products
+import CategoryTheory.Limits.Shapes.FiniteLimits
+import CategoryTheory.Limits.Shapes.Products
 
 #align_import category_theory.limits.shapes.finite_products from "leanprover-community/mathlib"@"69c6a5a12d8a2b159f20933e60115a4f2de62b58"
 
@@ -29,7 +29,7 @@ namespace CategoryTheory.Limits
 variable (C : Type u) [Category.{v} C]
 
 #print CategoryTheory.Limits.HasFiniteProducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite products if there is a chosen limit for every diagram
 with shape `discrete J`, where we have `[finite J]`.
 
@@ -72,7 +72,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 -/
 
 #print CategoryTheory.Limits.HasFiniteCoproducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
 with shape `discrete J`, where we have `[fintype J]`.

69c6a5a1

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) 2019 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.shapes.finite_products
-! leanprover-community/mathlib commit 69c6a5a12d8a2b159f20933e60115a4f2de62b58
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Limits.Shapes.FiniteLimits
 import Mathbin.CategoryTheory.Limits.Shapes.Products
 
+#align_import category_theory.limits.shapes.finite_products from "leanprover-community/mathlib"@"69c6a5a12d8a2b159f20933e60115a4f2de62b58"
+
 /-!
 # Categories with finite (co)products

69c6a5a1

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -32,7 +32,7 @@ namespace CategoryTheory.Limits
 variable (C : Type u) [Category.{v} C]
 
 #print CategoryTheory.Limits.HasFiniteProducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite products if there is a chosen limit for every diagram
 with shape `discrete J`, where we have `[finite J]`.
 
@@ -75,7 +75,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 -/
 
 #print CategoryTheory.Limits.HasFiniteCoproducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
 with shape `discrete J`, where we have `[fintype J]`.

69c6a5a1

bump to nightly-2023-06-04-18

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

3fb4268b

Diff

@@ -32,7 +32,7 @@ namespace CategoryTheory.Limits
 variable (C : Type u) [Category.{v} C]
 
 #print CategoryTheory.Limits.HasFiniteProducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite products if there is a chosen limit for every diagram
 with shape `discrete J`, where we have `[finite J]`.
 
@@ -75,7 +75,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 -/
 
 #print CategoryTheory.Limits.HasFiniteCoproducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:394:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
 with shape `discrete J`, where we have `[fintype J]`.

69c6a5a1

bump to nightly-2023-05-28-18

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

8d353152

Diff

@@ -25,7 +25,7 @@ universe w v u
 
 open CategoryTheory
 
-open Classical
+open scoped Classical
 
 namespace CategoryTheory.Limits

69c6a5a1

bump to nightly-2023-04-24-06

mathlib commit https://github.com/leanprover-community/mathlib/commit/09079525fd01b3dda35e96adaa08d2f943e1648c

ff662d55

Diff

@@ -32,7 +32,7 @@ namespace CategoryTheory.Limits
 variable (C : Type u) [Category.{v} C]
 
 #print CategoryTheory.Limits.HasFiniteProducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:388:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite products if there is a chosen limit for every diagram
 with shape `discrete J`, where we have `[finite J]`.
 
@@ -75,7 +75,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 -/
 
 #print CategoryTheory.Limits.HasFiniteCoproducts /-
-/- ./././Mathport/Syntax/Translate/Command.lean:388:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
+/- ./././Mathport/Syntax/Translate/Command.lean:393:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
 with shape `discrete J`, where we have `[fintype J]`.

69c6a5a1

bump to nightly-2023-03-14-02

mathlib commit https://github.com/leanprover-community/mathlib/commit/2196ab363eb097c008d4497125e0dde23fb36db2

d4b38a42

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.shapes.finite_products
-! leanprover-community/mathlib commit ac3ae212f394f508df43e37aa093722fa9b65d31
+! leanprover-community/mathlib commit 69c6a5a12d8a2b159f20933e60115a4f2de62b58
 ! 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.Shapes.Products
 /-!
 # Categories with finite (co)products
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 Typeclasses representing categories with (co)products over finite indexing types.
 -/

ac3ae212

bump to nightly-2023-03-11-18

mathlib commit https://github.com/leanprover-community/mathlib/commit/3180fab693e2cee3bff62675571264cb8778b212

1d00e3b6

Diff

@@ -67,7 +67,7 @@ noncomputable example [HasFiniteProducts C] (X : C) : C :=
 /-- If a category has all products then in particular it has finite products.
 -/
 theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts C :=
-  ⟨fun n => hasLimitsOfShapeOfEquivalence (Discrete.equivalence Equiv.ulift.{w})⟩
+  ⟨fun n => hasLimitsOfShape_of_equivalence (Discrete.equivalence Equiv.ulift.{w})⟩
 #align category_theory.limits.has_finite_products_of_has_products CategoryTheory.Limits.hasFiniteProducts_of_hasProducts
 -/

ac3ae212

bump to nightly-2023-03-08-08

mathlib commit https://github.com/leanprover-community/mathlib/commit/38f16f960f5006c6c0c2bac7b0aba5273188f4e5

fc92a682

Diff

@@ -28,6 +28,7 @@ namespace CategoryTheory.Limits
 
 variable (C : Type u) [Category.{v} C]
 
+#print CategoryTheory.Limits.HasFiniteProducts /-
 /- ./././Mathport/Syntax/Translate/Command.lean:388:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite products if there is a chosen limit for every diagram
 with shape `discrete J`, where we have `[finite J]`.
@@ -38,13 +39,17 @@ We require this condition only for `J = fin n` in the definition, then deduce a
 class HasFiniteProducts : Prop where
   out (n : ℕ) : HasLimitsOfShape (Discrete (Fin n)) C
 #align category_theory.limits.has_finite_products CategoryTheory.Limits.HasFiniteProducts
+-/
 
+#print CategoryTheory.Limits.hasFiniteProducts_of_hasFiniteLimits /-
 /-- If `C` has finite limits then it has finite products. -/
 instance (priority := 10) hasFiniteProducts_of_hasFiniteLimits [HasFiniteLimits C] :
     HasFiniteProducts C :=
   ⟨fun n => inferInstance⟩
 #align category_theory.limits.has_finite_products_of_has_finite_limits CategoryTheory.Limits.hasFiniteProducts_of_hasFiniteLimits
+-/
 
+#print CategoryTheory.Limits.hasLimitsOfShape_discrete /-
 instance hasLimitsOfShape_discrete [HasFiniteProducts C] (ι : Type w) [Finite ι] :
     HasLimitsOfShape (Discrete ι) C :=
   by
@@ -52,17 +57,21 @@ instance hasLimitsOfShape_discrete [HasFiniteProducts C] (ι : Type w) [Finite 
   haveI := has_finite_products.out C n
   exact has_limits_of_shape_of_equivalence (discrete.equivalence e.symm)
 #align category_theory.limits.has_limits_of_shape_discrete CategoryTheory.Limits.hasLimitsOfShape_discrete
+-/
 
 /-- We can now write this for powers. -/
 noncomputable example [HasFiniteProducts C] (X : C) : C :=
   ∏ fun i : Fin 5 => X
 
+#print CategoryTheory.Limits.hasFiniteProducts_of_hasProducts /-
 /-- If a category has all products then in particular it has finite products.
 -/
 theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts C :=
   ⟨fun n => hasLimitsOfShapeOfEquivalence (Discrete.equivalence Equiv.ulift.{w})⟩
 #align category_theory.limits.has_finite_products_of_has_products CategoryTheory.Limits.hasFiniteProducts_of_hasProducts
+-/
 
+#print CategoryTheory.Limits.HasFiniteCoproducts /-
 /- ./././Mathport/Syntax/Translate/Command.lean:388:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
 with shape `discrete J`, where we have `[fintype J]`.
@@ -73,9 +82,11 @@ We require this condition only for `J = fin n` in the definition, then deduce a
 class HasFiniteCoproducts : Prop where
   out (n : ℕ) : HasColimitsOfShape (Discrete (Fin n)) C
 #align category_theory.limits.has_finite_coproducts CategoryTheory.Limits.HasFiniteCoproducts
+-/
 
 attribute [class] has_finite_coproducts
 
+#print CategoryTheory.Limits.hasColimitsOfShape_discrete /-
 instance hasColimitsOfShape_discrete [HasFiniteCoproducts C] (ι : Type w) [Finite ι] :
     HasColimitsOfShape (Discrete ι) C :=
   by
@@ -83,18 +94,23 @@ instance hasColimitsOfShape_discrete [HasFiniteCoproducts C] (ι : Type w) [Fini
   haveI := has_finite_coproducts.out C n
   exact has_colimits_of_shape_of_equivalence (discrete.equivalence e.symm)
 #align category_theory.limits.has_colimits_of_shape_discrete CategoryTheory.Limits.hasColimitsOfShape_discrete
+-/
 
+#print CategoryTheory.Limits.hasFiniteCoproducts_of_hasFiniteColimits /-
 /-- If `C` has finite colimits then it has finite coproducts. -/
 instance (priority := 10) hasFiniteCoproducts_of_hasFiniteColimits [HasFiniteColimits C] :
     HasFiniteCoproducts C :=
   ⟨fun J => by infer_instance⟩
 #align category_theory.limits.has_finite_coproducts_of_has_finite_colimits CategoryTheory.Limits.hasFiniteCoproducts_of_hasFiniteColimits
+-/
 
+#print CategoryTheory.Limits.hasFiniteCoproducts_of_hasCoproducts /-
 /-- If a category has all coproducts then in particular it has finite coproducts.
 -/
 theorem hasFiniteCoproducts_of_hasCoproducts [HasCoproducts.{w} C] : HasFiniteCoproducts C :=
   ⟨fun J => hasColimitsOfShape_of_equivalence (Discrete.equivalence Equiv.ulift.{w})⟩
 #align category_theory.limits.has_finite_coproducts_of_has_coproducts CategoryTheory.Limits.hasFiniteCoproducts_of_hasCoproducts
+-/
 
 end CategoryTheory.Limits

ac3ae212

bump to nightly-2023-02-28-22

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

1fb1623f

Diff

@@ -60,7 +60,7 @@ noncomputable example [HasFiniteProducts C] (X : C) : C :=
 /-- If a category has all products then in particular it has finite products.
 -/
 theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts C :=
-  ⟨fun n => hasLimitsOfShape_of_equivalence (Discrete.equivalence Equiv.ulift.{w})⟩
+  ⟨fun n => hasLimitsOfShapeOfEquivalence (Discrete.equivalence Equiv.ulift.{w})⟩
 #align category_theory.limits.has_finite_products_of_has_products CategoryTheory.Limits.hasFiniteProducts_of_hasProducts
 
 /- ./././Mathport/Syntax/Translate/Command.lean:388:30: infer kinds are unsupported in Lean 4: #[`out] [] -/

ac3ae212

bump to nightly-2023-02-27-08

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

91d8c210

Diff

@@ -40,18 +40,18 @@ class HasFiniteProducts : Prop where
 #align category_theory.limits.has_finite_products CategoryTheory.Limits.HasFiniteProducts
 
 /-- If `C` has finite limits then it has finite products. -/
-instance (priority := 10) hasFiniteProductsOfHasFiniteLimits [HasFiniteLimits C] :
+instance (priority := 10) hasFiniteProducts_of_hasFiniteLimits [HasFiniteLimits C] :
     HasFiniteProducts C :=
   ⟨fun n => inferInstance⟩
-#align category_theory.limits.has_finite_products_of_has_finite_limits CategoryTheory.Limits.hasFiniteProductsOfHasFiniteLimits
+#align category_theory.limits.has_finite_products_of_has_finite_limits CategoryTheory.Limits.hasFiniteProducts_of_hasFiniteLimits
 
-instance hasLimitsOfShapeDiscrete [HasFiniteProducts C] (ι : Type w) [Finite ι] :
+instance hasLimitsOfShape_discrete [HasFiniteProducts C] (ι : Type w) [Finite ι] :
     HasLimitsOfShape (Discrete ι) C :=
   by
   rcases Finite.exists_equiv_fin ι with ⟨n, ⟨e⟩⟩
   haveI := has_finite_products.out C n
   exact has_limits_of_shape_of_equivalence (discrete.equivalence e.symm)
-#align category_theory.limits.has_limits_of_shape_discrete CategoryTheory.Limits.hasLimitsOfShapeDiscrete
+#align category_theory.limits.has_limits_of_shape_discrete CategoryTheory.Limits.hasLimitsOfShape_discrete
 
 /-- We can now write this for powers. -/
 noncomputable example [HasFiniteProducts C] (X : C) : C :=
@@ -59,9 +59,9 @@ noncomputable example [HasFiniteProducts C] (X : C) : C :=
 
 /-- If a category has all products then in particular it has finite products.
 -/
-theorem hasFiniteProductsOfHasProducts [HasProducts.{w} C] : HasFiniteProducts C :=
-  ⟨fun n => hasLimitsOfShapeOfEquivalence (Discrete.equivalence Equiv.ulift.{w})⟩
-#align category_theory.limits.has_finite_products_of_has_products CategoryTheory.Limits.hasFiniteProductsOfHasProducts
+theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts C :=
+  ⟨fun n => hasLimitsOfShape_of_equivalence (Discrete.equivalence Equiv.ulift.{w})⟩
+#align category_theory.limits.has_finite_products_of_has_products CategoryTheory.Limits.hasFiniteProducts_of_hasProducts
 
 /- ./././Mathport/Syntax/Translate/Command.lean:388:30: infer kinds are unsupported in Lean 4: #[`out] [] -/
 /-- A category has finite coproducts if there is a chosen colimit for every diagram
@@ -76,25 +76,25 @@ class HasFiniteCoproducts : Prop where
 
 attribute [class] has_finite_coproducts
 
-instance hasColimitsOfShapeDiscrete [HasFiniteCoproducts C] (ι : Type w) [Finite ι] :
+instance hasColimitsOfShape_discrete [HasFiniteCoproducts C] (ι : Type w) [Finite ι] :
     HasColimitsOfShape (Discrete ι) C :=
   by
   rcases Finite.exists_equiv_fin ι with ⟨n, ⟨e⟩⟩
   haveI := has_finite_coproducts.out C n
   exact has_colimits_of_shape_of_equivalence (discrete.equivalence e.symm)
-#align category_theory.limits.has_colimits_of_shape_discrete CategoryTheory.Limits.hasColimitsOfShapeDiscrete
+#align category_theory.limits.has_colimits_of_shape_discrete CategoryTheory.Limits.hasColimitsOfShape_discrete
 
 /-- If `C` has finite colimits then it has finite coproducts. -/
-instance (priority := 10) hasFiniteCoproductsOfHasFiniteColimits [HasFiniteColimits C] :
+instance (priority := 10) hasFiniteCoproducts_of_hasFiniteColimits [HasFiniteColimits C] :
     HasFiniteCoproducts C :=
   ⟨fun J => by infer_instance⟩
-#align category_theory.limits.has_finite_coproducts_of_has_finite_colimits CategoryTheory.Limits.hasFiniteCoproductsOfHasFiniteColimits
+#align category_theory.limits.has_finite_coproducts_of_has_finite_colimits CategoryTheory.Limits.hasFiniteCoproducts_of_hasFiniteColimits
 
 /-- If a category has all coproducts then in particular it has finite coproducts.
 -/
-theorem hasFiniteCoproductsOfHasCoproducts [HasCoproducts.{w} C] : HasFiniteCoproducts C :=
-  ⟨fun J => hasColimitsOfShapeOfEquivalence (Discrete.equivalence Equiv.ulift.{w})⟩
-#align category_theory.limits.has_finite_coproducts_of_has_coproducts CategoryTheory.Limits.hasFiniteCoproductsOfHasCoproducts
+theorem hasFiniteCoproducts_of_hasCoproducts [HasCoproducts.{w} C] : HasFiniteCoproducts C :=
+  ⟨fun J => hasColimitsOfShape_of_equivalence (Discrete.equivalence Equiv.ulift.{w})⟩
+#align category_theory.limits.has_finite_coproducts_of_has_coproducts CategoryTheory.Limits.hasFiniteCoproducts_of_hasCoproducts
 
 end CategoryTheory.Limits

ac3ae212

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

ac3ae212

chore: scope open Classical (#11199)

We remove all but one open Classicals, instead preferring to use open scoped Classical. The only real side-effect this led to is moving a couple declarations to use Exists.choose instead of Classical.choose.

The first few commits are explicitly labelled regex replaces for ease of review.

c747be0a

Diff

@@ -19,7 +19,7 @@ universe w v u
 
 open CategoryTheory
 
-open Classical
+open scoped Classical
 
 namespace CategoryTheory.Limits

ac3ae212

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

@@ -29,7 +29,7 @@ variable (C : Type u) [Category.{v} C]
 with shape `Discrete J`, where we have `[Finite J]`.
 
 We require this condition only for `J = Fin n` in the definition, then deduce a version for any
-`J : Type _` as a corollary of this definition.
+`J : Type*` as a corollary of this definition.
 -/
 class HasFiniteProducts : Prop where
   /-- `C` has finite products -/
@@ -63,7 +63,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 with shape `Discrete J`, where we have `[Fintype J]`.
 
 We require this condition only for `J = Fin n` in the definition, then deduce a version for any
-`J : Type _` as a corollary of this definition.
+`J : Type*` as a corollary of this definition.
 -/
 class HasFiniteCoproducts : Prop where
   /-- `C` has all finite coproducts -/

ac3ae212

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) 2019 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.shapes.finite_products
-! leanprover-community/mathlib commit ac3ae212f394f508df43e37aa093722fa9b65d31
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Limits.Shapes.FiniteLimits
 import Mathlib.CategoryTheory.Limits.Shapes.Products
 
+#align_import category_theory.limits.shapes.finite_products from "leanprover-community/mathlib"@"ac3ae212f394f508df43e37aa093722fa9b65d31"
+
 /-!
 # Categories with finite (co)products

ac3ae212

fix: docstring for CategoryTheory.Limits.HasFiniteProducts (#5398)

ccc54991

Diff

@@ -28,7 +28,7 @@ namespace CategoryTheory.Limits
 
 variable (C : Type u) [Category.{v} C]
 
-/-- A category has finite products if there is a chosen limit for every diagram
+/-- A category has finite products if there exists a limit for every diagram
 with shape `Discrete J`, where we have `[Finite J]`.
 
 We require this condition only for `J = Fin n` in the definition, then deduce a version for any
@@ -62,7 +62,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
   ⟨fun _ => hasLimitsOfShape_of_equivalence (Discrete.equivalence Equiv.ulift.{w})⟩
 #align category_theory.limits.has_finite_products_of_has_products CategoryTheory.Limits.hasFiniteProducts_of_hasProducts
 
-/-- A category has finite coproducts if there is a chosen colimit for every diagram
+/-- A category has finite coproducts if there exists a colimit for every diagram
 with shape `Discrete J`, where we have `[Fintype J]`.
 
 We require this condition only for `J = Fin n` in the definition, then deduce a version for any

ac3ae212

feat: port CategoryTheory.Limits.Opposites (#2805)

Co-authored-by: Johan Commelin <johan@commelin.net>

3fcb15f5

Diff

@@ -49,7 +49,7 @@ instance hasLimitsOfShape_discrete [HasFiniteProducts C] (ι : Type w) [Finite 
     HasLimitsOfShape (Discrete ι) C := by
   rcases Finite.exists_equiv_fin ι with ⟨n, ⟨e⟩⟩
   haveI : HasLimitsOfShape (Discrete (Fin n)) C := HasFiniteProducts.out n
-  exact hasLimitsOfShapeOfEquivalence (Discrete.equivalence e.symm)
+  exact hasLimitsOfShape_of_equivalence (Discrete.equivalence e.symm)
 #align category_theory.limits.has_limits_of_shape_discrete CategoryTheory.Limits.hasLimitsOfShape_discrete
 
 /-- We can now write this for powers. -/
@@ -59,7 +59,7 @@ noncomputable example [HasFiniteProducts C] (X : C) : C :=
 /-- If a category has all products then in particular it has finite products.
 -/
 theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts C :=
-  ⟨fun _ => hasLimitsOfShapeOfEquivalence (Discrete.equivalence Equiv.ulift.{w})⟩
+  ⟨fun _ => hasLimitsOfShape_of_equivalence (Discrete.equivalence Equiv.ulift.{w})⟩
 #align category_theory.limits.has_finite_products_of_has_products CategoryTheory.Limits.hasFiniteProducts_of_hasProducts
 
 /-- A category has finite coproducts if there is a chosen colimit for every diagram

ac3ae212

chore: tidy various files (#2742)

8c7b65ad

Diff

@@ -32,7 +32,7 @@ variable (C : Type u) [Category.{v} C]
 with shape `Discrete J`, where we have `[Finite J]`.
 
 We require this condition only for `J = Fin n` in the definition, then deduce a version for any
-`J : Type*` as a corollary of this definition.
+`J : Type _` as a corollary of this definition.
 -/
 class HasFiniteProducts : Prop where
   /-- `C` has finite products -/
@@ -66,7 +66,7 @@ theorem hasFiniteProducts_of_hasProducts [HasProducts.{w} C] : HasFiniteProducts
 with shape `Discrete J`, where we have `[Fintype J]`.
 
 We require this condition only for `J = Fin n` in the definition, then deduce a version for any
-`J : Type*` as a corollary of this definition.
+`J : Type _` as a corollary of this definition.
 -/
 class HasFiniteCoproducts : Prop where
   /-- `C` has all finite coproducts -/
@@ -95,4 +95,3 @@ theorem hasFiniteCoproducts_of_hasCoproducts [HasCoproducts.{w} C] : HasFiniteCo
 #align category_theory.limits.has_finite_coproducts_of_has_coproducts CategoryTheory.Limits.hasFiniteCoproducts_of_hasCoproducts
 
 end CategoryTheory.Limits
-

ac3ae212

feat: port CategoryTheory.Limits.Shapes.FiniteProducts (#2688)

Co-authored-by: Matthew Robert Ballard <100034030+mattrobball@users.noreply.github.com>

7e013f6b

`category_theory.limits.shapes.finite_products` ⟷ `Mathlib.CategoryTheory.Limits.Shapes.FiniteProducts`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 2 + 235

category_theory.limits.shapes.finite_products ⟷ Mathlib.CategoryTheory.Limits.Shapes.FiniteProducts

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 2 + 235

`category_theory.limits.shapes.finite_products` ⟷ `Mathlib.CategoryTheory.Limits.Shapes.FiniteProducts`