category_theory.subobject.comma | 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

70fd9563

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

9d2f0748

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) 2022 Markus Himmel. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Markus Himmel
 -/
-import Mathbin.CategoryTheory.Subobject.WellPowered
-import Mathbin.CategoryTheory.Limits.Preserves.Finite
-import Mathbin.CategoryTheory.Limits.Shapes.FiniteLimits
+import CategoryTheory.Subobject.WellPowered
+import CategoryTheory.Limits.Preserves.Finite
+import CategoryTheory.Limits.Shapes.FiniteLimits
 
 #align_import category_theory.subobject.comma from "leanprover-community/mathlib"@"9d2f0748e6c50d7a2657c564b1ff2c695b39148d"

9d2f0748

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) 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.subobject.comma
-! leanprover-community/mathlib commit 9d2f0748e6c50d7a2657c564b1ff2c695b39148d
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.CategoryTheory.Subobject.WellPowered
 import Mathbin.CategoryTheory.Limits.Preserves.Finite
 import Mathbin.CategoryTheory.Limits.Shapes.FiniteLimits
 
+#align_import category_theory.subobject.comma from "leanprover-community/mathlib"@"9d2f0748e6c50d7a2657c564b1ff2c695b39148d"
+
 /-!
 # Subobjects in the category of structured arrows

9d2f0748

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -72,12 +72,15 @@ theorem projectSubobject_mk [HasLimits C] [PreservesLimits T] {A P : StructuredA
 #align category_theory.structured_arrow.project_subobject_mk CategoryTheory.StructuredArrow.projectSubobject_mk
 -/
 
+#print CategoryTheory.StructuredArrow.projectSubobject_factors /-
 theorem projectSubobject_factors [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
     ∀ P : Subobject A, ∃ q, q ≫ T.map (projectSubobject P).arrow = A.Hom :=
   Subobject.ind _ fun P f hf =>
     ⟨P.Hom ≫ T.map (Subobject.underlyingIso _).inv, by dsimp; simp [← T.map_comp]⟩
 #align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factors
+-/
 
+#print CategoryTheory.StructuredArrow.liftSubobject /-
 /-- A subobject of the underlying object of a structured arrow can be lifted to a subobject of
     the structured arrow, provided that there is a morphism making the subobject into a structured
     arrow. -/
@@ -86,7 +89,9 @@ def liftSubobject {A : StructuredArrow S T} (P : Subobject A.right) {q}
     (hq : q ≫ T.map P.arrow = A.Hom) : Subobject A :=
   Subobject.mk (homMk P.arrow hq : mk q ⟶ A)
 #align category_theory.structured_arrow.lift_subobject CategoryTheory.StructuredArrow.liftSubobject
+-/
 
+#print CategoryTheory.StructuredArrow.lift_projectSubobject /-
 /-- Projecting and then lifting a subobject recovers the original subobject, because there is at
     most one morphism making the projected subobject into a structured arrow. -/
 theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
@@ -101,7 +106,9 @@ theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredA
         · exact (cancel_mono (T.map f.right)).1 (by dsimp; simpa [← T.map_comp] using hq)
       · exact ext _ _ (by dsimp; simp))
 #align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobject
+-/
 
+#print CategoryTheory.StructuredArrow.subobjectEquiv /-
 /-- If `A : S → T.obj B` is a structured arrow for `S : D` and `T : C ⥤ D`, then we can explicitly
     describe the subobjects of `A` as the subobjects `P` of `B` in `C` for which `A.hom` factors
     through the image of `P` under `T`. -/
@@ -126,6 +133,7 @@ def subobjectEquiv [HasLimits C] [PreservesLimits T] (A : StructuredArrow S T) :
         · refine' subobject.mk_le_mk_of_comm (subobject.of_mk_le_mk _ _ h).right _
           exact congr_arg comma_morphism.right (subobject.of_mk_le_mk_comp h))
 #align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquiv
+-/
 
 #print CategoryTheory.StructuredArrow.wellPowered_structuredArrow /-
 /-- If `C` is well-powered and complete and `T` preserves limits, then `structured_arrow S T` is
@@ -165,13 +173,16 @@ theorem projectQuotient_mk [HasColimits C] [PreservesColimits S] {A : Costructur
 #align category_theory.costructured_arrow.project_quotient_mk CategoryTheory.CostructuredArrow.projectQuotient_mk
 -/
 
+#print CategoryTheory.CostructuredArrow.projectQuotient_factors /-
 theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
     ∀ P : Subobject (op A), ∃ q, S.map (projectQuotient P).arrow.unop ≫ q = A.Hom :=
   Subobject.ind _ fun P f hf =>
     ⟨S.map (Subobject.underlyingIso _).unop.inv ≫ P.unop.Hom, by dsimp;
       rw [← category.assoc, ← S.map_comp, ← unop_comp]; simp⟩
 #align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factors
+-/
 
+#print CategoryTheory.CostructuredArrow.liftQuotient /-
 /-- A quotient of the underlying object of a costructured arrow can be lifted to a quotient of
     the costructured arrow, provided that there is a morphism making the quotient into a
     costructured arrow. -/
@@ -180,7 +191,9 @@ def liftQuotient {A : CostructuredArrow S T} (P : Subobject (op A.left)) {q}
     (hq : S.map P.arrow.unop ≫ q = A.Hom) : Subobject (op A) :=
   Subobject.mk (homMk P.arrow.unop hq : A ⟶ mk q).op
 #align category_theory.costructured_arrow.lift_quotient CategoryTheory.CostructuredArrow.liftQuotient
+-/
 
+#print CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop /-
 /-- Technical lemma for `lift_project_quotient`. -/
 @[simp]
 theorem unop_left_comp_underlyingIso_hom_unop {A : CostructuredArrow S T}
@@ -193,7 +206,9 @@ theorem unop_left_comp_underlyingIso_hom_unop {A : CostructuredArrow S T}
     rw [← Quiver.Hom.unop_op f.unop.left]
   rw [← unop_comp, subobject.underlying_iso_hom_comp_eq_mk]
 #align category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop
+-/
 
+#print CategoryTheory.CostructuredArrow.lift_projectQuotient /-
 /-- Projecting and then lifting a quotient recovers the original quotient, because there is at most
     one morphism making the projected quotient into a costructured arrow. -/
 theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
@@ -209,6 +224,7 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
           simpa [← category.assoc, ← S.map_comp] using hq
       · exact Quiver.Hom.unop_inj (ext _ _ (by dsimp; simp)))
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
+-/
 
 #print CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop /-
 /-- Technical lemma for `quotient_equiv`. -/
@@ -225,6 +241,7 @@ theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (Costruc
 #align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop
 -/
 
+#print CategoryTheory.CostructuredArrow.quotientEquiv /-
 /-- If `A : S.obj B ⟶ T` is a costructured arrow for `S : C ⥤ D` and `T : D`, then we can
     explicitly describe the quotients of `A` as the quotients `P` of `B` in `C` for which `A.hom`
     factors through the image of `P` under `S`. -/
@@ -253,6 +270,7 @@ def quotientEquiv [HasColimits C] [PreservesColimits S] (A : CostructuredArrow S
           have := congr_arg Quiver.Hom.unop (subobject.of_mk_le_mk_comp h)
           simpa [-subobject.of_mk_le_mk_comp] using congr_arg comma_morphism.left this)
 #align category_theory.costructured_arrow.quotient_equiv CategoryTheory.CostructuredArrow.quotientEquiv
+-/
 
 #print CategoryTheory.CostructuredArrow.well_copowered_costructuredArrow /-
 /-- If `C` is well-copowered and cocomplete and `S` preserves colimits, then

9d2f0748

bump to nightly-2023-05-28-18

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

8d353152

Diff

@@ -210,6 +210,7 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
       · exact Quiver.Hom.unop_inj (ext _ _ (by dsimp; simp)))
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
 
+#print CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop /-
 /-- Technical lemma for `quotient_equiv`. -/
 theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (CostructuredArrow S T)ᵒᵖ}
     {f : P ⟶ op A} {g : Q ⟶ op A} [Mono f.unop.left.op] [Mono g.unop.left.op]
@@ -222,6 +223,7 @@ theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (Costruc
   rw [← unop_comp]
   simp only [subobject.of_mk_le_mk_comp, Quiver.Hom.unop_op]
 #align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop
+-/
 
 /-- If `A : S.obj B ⟶ T` is a costructured arrow for `S : C ⥤ D` and `T : D`, then we can
     explicitly describe the quotients of `A` as the quotients `P` of `B` in `C` for which `A.hom`

9d2f0748

bump to nightly-2023-05-28-06

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

ba5d8b97

Diff

@@ -72,18 +72,12 @@ theorem projectSubobject_mk [HasLimits C] [PreservesLimits T] {A P : StructuredA
 #align category_theory.structured_arrow.project_subobject_mk CategoryTheory.StructuredArrow.projectSubobject_mk
 -/
 
-/- warning: category_theory.structured_arrow.project_subobject_factors -> CategoryTheory.StructuredArrow.projectSubobject_factors is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factorsₓ'. -/
 theorem projectSubobject_factors [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
     ∀ P : Subobject A, ∃ q, q ≫ T.map (projectSubobject P).arrow = A.Hom :=
   Subobject.ind _ fun P f hf =>
     ⟨P.Hom ≫ T.map (Subobject.underlyingIso _).inv, by dsimp; simp [← T.map_comp]⟩
 #align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factors
 
-/- warning: category_theory.structured_arrow.lift_subobject -> CategoryTheory.StructuredArrow.liftSubobject is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.lift_subobject CategoryTheory.StructuredArrow.liftSubobjectₓ'. -/
 /-- A subobject of the underlying object of a structured arrow can be lifted to a subobject of
     the structured arrow, provided that there is a morphism making the subobject into a structured
     arrow. -/
@@ -93,9 +87,6 @@ def liftSubobject {A : StructuredArrow S T} (P : Subobject A.right) {q}
   Subobject.mk (homMk P.arrow hq : mk q ⟶ A)
 #align category_theory.structured_arrow.lift_subobject CategoryTheory.StructuredArrow.liftSubobject
 
-/- warning: category_theory.structured_arrow.lift_project_subobject -> CategoryTheory.StructuredArrow.lift_projectSubobject is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobjectₓ'. -/
 /-- Projecting and then lifting a subobject recovers the original subobject, because there is at
     most one morphism making the projected subobject into a structured arrow. -/
 theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
@@ -111,9 +102,6 @@ theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredA
       · exact ext _ _ (by dsimp; simp))
 #align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobject
 
-/- warning: category_theory.structured_arrow.subobject_equiv -> CategoryTheory.StructuredArrow.subobjectEquiv is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquivₓ'. -/
 /-- If `A : S → T.obj B` is a structured arrow for `S : D` and `T : C ⥤ D`, then we can explicitly
     describe the subobjects of `A` as the subobjects `P` of `B` in `C` for which `A.hom` factors
     through the image of `P` under `T`. -/
@@ -177,9 +165,6 @@ theorem projectQuotient_mk [HasColimits C] [PreservesColimits S] {A : Costructur
 #align category_theory.costructured_arrow.project_quotient_mk CategoryTheory.CostructuredArrow.projectQuotient_mk
 -/
 
-/- warning: category_theory.costructured_arrow.project_quotient_factors -> CategoryTheory.CostructuredArrow.projectQuotient_factors is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factorsₓ'. -/
 theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
     ∀ P : Subobject (op A), ∃ q, S.map (projectQuotient P).arrow.unop ≫ q = A.Hom :=
   Subobject.ind _ fun P f hf =>
@@ -187,9 +172,6 @@ theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : Costr
       rw [← category.assoc, ← S.map_comp, ← unop_comp]; simp⟩
 #align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factors
 
-/- warning: category_theory.costructured_arrow.lift_quotient -> CategoryTheory.CostructuredArrow.liftQuotient is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.lift_quotient CategoryTheory.CostructuredArrow.liftQuotientₓ'. -/
 /-- A quotient of the underlying object of a costructured arrow can be lifted to a quotient of
     the costructured arrow, provided that there is a morphism making the quotient into a
     costructured arrow. -/
@@ -199,9 +181,6 @@ def liftQuotient {A : CostructuredArrow S T} (P : Subobject (op A.left)) {q}
   Subobject.mk (homMk P.arrow.unop hq : A ⟶ mk q).op
 #align category_theory.costructured_arrow.lift_quotient CategoryTheory.CostructuredArrow.liftQuotient
 
-/- warning: category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop -> CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unopₓ'. -/
 /-- Technical lemma for `lift_project_quotient`. -/
 @[simp]
 theorem unop_left_comp_underlyingIso_hom_unop {A : CostructuredArrow S T}
@@ -215,9 +194,6 @@ theorem unop_left_comp_underlyingIso_hom_unop {A : CostructuredArrow S T}
   rw [← unop_comp, subobject.underlying_iso_hom_comp_eq_mk]
 #align category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop
 
-/- warning: category_theory.costructured_arrow.lift_project_quotient -> CategoryTheory.CostructuredArrow.lift_projectQuotient is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotientₓ'. -/
 /-- Projecting and then lifting a quotient recovers the original quotient, because there is at most
     one morphism making the projected quotient into a costructured arrow. -/
 theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
@@ -234,9 +210,6 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
       · exact Quiver.Hom.unop_inj (ext _ _ (by dsimp; simp)))
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
 
-/- warning: category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop -> CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unopₓ'. -/
 /-- Technical lemma for `quotient_equiv`. -/
 theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (CostructuredArrow S T)ᵒᵖ}
     {f : P ⟶ op A} {g : Q ⟶ op A} [Mono f.unop.left.op] [Mono g.unop.left.op]
@@ -250,9 +223,6 @@ theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (Costruc
   simp only [subobject.of_mk_le_mk_comp, Quiver.Hom.unop_op]
 #align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop
 
-/- warning: category_theory.costructured_arrow.quotient_equiv -> CategoryTheory.CostructuredArrow.quotientEquiv is a dubious translation:
-<too large>
-Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.quotient_equiv CategoryTheory.CostructuredArrow.quotientEquivₓ'. -/
 /-- If `A : S.obj B ⟶ T` is a costructured arrow for `S : C ⥤ D` and `T : D`, then we can
     explicitly describe the quotients of `A` as the quotients `P` of `B` in `C` for which `A.hom`
     factors through the image of `P` under `S`. -/

9d2f0748

bump to nightly-2023-05-28-04

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

6797a637

Diff

@@ -78,10 +78,7 @@ Case conversion may be inaccurate. Consider using '#align category_theory.struct
 theorem projectSubobject_factors [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
     ∀ P : Subobject A, ∃ q, q ≫ T.map (projectSubobject P).arrow = A.Hom :=
   Subobject.ind _ fun P f hf =>
-    ⟨P.Hom ≫ T.map (Subobject.underlyingIso _).inv,
-      by
-      dsimp
-      simp [← T.map_comp]⟩
+    ⟨P.Hom ≫ T.map (Subobject.underlyingIso _).inv, by dsimp; simp [← T.map_comp]⟩
 #align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factors
 
 /- warning: category_theory.structured_arrow.lift_subobject -> CategoryTheory.StructuredArrow.liftSubobject is a dubious translation:
@@ -110,18 +107,8 @@ theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredA
       fapply subobject.mk_eq_mk_of_comm
       · fapply iso_mk
         · exact subobject.underlying_iso _
-        ·
-          exact
-            (cancel_mono (T.map f.right)).1
-              (by
-                dsimp
-                simpa [← T.map_comp] using hq)
-      ·
-        exact
-          ext _ _
-            (by
-              dsimp
-              simp))
+        · exact (cancel_mono (T.map f.right)).1 (by dsimp; simpa [← T.map_comp] using hq)
+      · exact ext _ _ (by dsimp; simp))
 #align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobject
 
 /- warning: category_theory.structured_arrow.subobject_equiv -> CategoryTheory.StructuredArrow.subobjectEquiv is a dubious translation:
@@ -196,11 +183,8 @@ Case conversion may be inaccurate. Consider using '#align category_theory.costru
 theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
     ∀ P : Subobject (op A), ∃ q, S.map (projectQuotient P).arrow.unop ≫ q = A.Hom :=
   Subobject.ind _ fun P f hf =>
-    ⟨S.map (Subobject.underlyingIso _).unop.inv ≫ P.unop.Hom,
-      by
-      dsimp
-      rw [← category.assoc, ← S.map_comp, ← unop_comp]
-      simp⟩
+    ⟨S.map (Subobject.underlyingIso _).unop.inv ≫ P.unop.Hom, by dsimp;
+      rw [← category.assoc, ← S.map_comp, ← unop_comp]; simp⟩
 #align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factors
 
 /- warning: category_theory.costructured_arrow.lift_quotient -> CategoryTheory.CostructuredArrow.liftQuotient is a dubious translation:
@@ -247,13 +231,7 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
         · exact (subobject.underlying_iso f.unop.left.op).unop
         · refine' (cancel_epi (S.map f.unop.left)).1 _
           simpa [← category.assoc, ← S.map_comp] using hq
-      ·
-        exact
-          Quiver.Hom.unop_inj
-            (ext _ _
-              (by
-                dsimp
-                simp)))
+      · exact Quiver.Hom.unop_inj (ext _ _ (by dsimp; simp)))
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
 
 /- warning: category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop -> CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop is a dubious translation:

9d2f0748

bump to nightly-2023-05-28-03

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

6c6011cf

Diff

@@ -73,10 +73,7 @@ theorem projectSubobject_mk [HasLimits C] [PreservesLimits T] {A P : StructuredA
 -/
 
 /- warning: category_theory.structured_arrow.project_subobject_factors -> CategoryTheory.StructuredArrow.projectSubobject_factors is a dubious translation:
-lean 3 declaration is
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factorsₓ'. -/
 theorem projectSubobject_factors [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
     ∀ P : Subobject A, ∃ q, q ≫ T.map (projectSubobject P).arrow = A.Hom :=
@@ -88,10 +85,7 @@ theorem projectSubobject_factors [HasLimits C] [PreservesLimits T] {A : Structur
 #align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factors
 
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 Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.lift_subobject CategoryTheory.StructuredArrow.liftSubobjectₓ'. -/
 /-- A subobject of the underlying object of a structured arrow can be lifted to a subobject of
     the structured arrow, provided that there is a morphism making the subobject into a structured
@@ -103,10 +97,7 @@ def liftSubobject {A : StructuredArrow S T} (P : Subobject A.right) {q}
 #align category_theory.structured_arrow.lift_subobject CategoryTheory.StructuredArrow.liftSubobject
 
 /- warning: category_theory.structured_arrow.lift_project_subobject -> CategoryTheory.StructuredArrow.lift_projectSubobject is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobjectₓ'. -/
 /-- Projecting and then lifting a subobject recovers the original subobject, because there is at
     most one morphism making the projected subobject into a structured arrow. -/
@@ -134,10 +125,7 @@ theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredA
 #align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobject
 
 /- warning: category_theory.structured_arrow.subobject_equiv -> CategoryTheory.StructuredArrow.subobjectEquiv is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquivₓ'. -/
 /-- If `A : S → T.obj B` is a structured arrow for `S : D` and `T : C ⥤ D`, then we can explicitly
     describe the subobjects of `A` as the subobjects `P` of `B` in `C` for which `A.hom` factors
@@ -203,10 +191,7 @@ theorem projectQuotient_mk [HasColimits C] [PreservesColimits S] {A : Costructur
 -/
 
 /- warning: category_theory.costructured_arrow.project_quotient_factors -> CategoryTheory.CostructuredArrow.projectQuotient_factors is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factorsₓ'. -/
 theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
     ∀ P : Subobject (op A), ∃ q, S.map (projectQuotient P).arrow.unop ≫ q = A.Hom :=
@@ -219,10 +204,7 @@ theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : Costr
 #align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factors
 
 /- warning: category_theory.costructured_arrow.lift_quotient -> CategoryTheory.CostructuredArrow.liftQuotient is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.lift_quotient CategoryTheory.CostructuredArrow.liftQuotientₓ'. -/
 /-- A quotient of the underlying object of a costructured arrow can be lifted to a quotient of
     the costructured arrow, provided that there is a morphism making the quotient into a
@@ -234,10 +216,7 @@ def liftQuotient {A : CostructuredArrow S T} (P : Subobject (op A.left)) {q}
 #align category_theory.costructured_arrow.lift_quotient CategoryTheory.CostructuredArrow.liftQuotient
 
 /- warning: category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop -> CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unopₓ'. -/
 /-- Technical lemma for `lift_project_quotient`. -/
 @[simp]
@@ -253,10 +232,7 @@ theorem unop_left_comp_underlyingIso_hom_unop {A : CostructuredArrow S T}
 #align category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop
 
 /- warning: category_theory.costructured_arrow.lift_project_quotient -> CategoryTheory.CostructuredArrow.lift_projectQuotient is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotientₓ'. -/
 /-- Projecting and then lifting a quotient recovers the original quotient, because there is at most
     one morphism making the projected quotient into a costructured arrow. -/
@@ -281,10 +257,7 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
 
 /- warning: category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop -> CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop is a dubious translation:
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 Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unopₓ'. -/
 /-- Technical lemma for `quotient_equiv`. -/
 theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (CostructuredArrow S T)ᵒᵖ}
@@ -300,10 +273,7 @@ theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (Costruc
 #align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop
 
 /- warning: category_theory.costructured_arrow.quotient_equiv -> CategoryTheory.CostructuredArrow.quotientEquiv is a dubious translation:
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+<too large>
 Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.quotient_equiv CategoryTheory.CostructuredArrow.quotientEquivₓ'. -/
 /-- If `A : S.obj B ⟶ T` is a costructured arrow for `S : C ⥤ D` and `T : D`, then we can
     explicitly describe the quotients of `A` as the quotients `P` of `B` in `C` for which `A.hom`

9d2f0748

bump to nightly-2023-05-16-16

mathlib commit https://github.com/leanprover-community/mathlib/commit/0b9eaaa7686280fad8cce467f5c3c57ee6ce77f8

9cb92e8c

Diff

@@ -135,7 +135,7 @@ theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredA
 
 /- warning: category_theory.structured_arrow.subobject_equiv -> CategoryTheory.StructuredArrow.subobjectEquiv is a dubious translation:
 lean 3 declaration is
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 Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquivₓ'. -/
@@ -280,7 +280,12 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
                 simp)))
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
 
-#print CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop /-
+/- warning: category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop -> CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop is a dubious translation:
+lean 3 declaration is
+  forall {C : Type.{u2}} [_inst_1 : CategoryTheory.Category.{u1, u2} C] {D : Type.{u3}} [_inst_2 : CategoryTheory.Category.{u1, u3} D] {S : CategoryTheory.Functor.{u1, u1, u2, u3} C _inst_1 D _inst_2} {T : D} {A : CategoryTheory.CostructuredArrow.{u1, u1, u2, u3} C _inst_1 D _inst_2 S T} {P : Opposite.{succ (max u2 u1)} (CategoryTheory.CostructuredArrow.{u1, u1, u2, u3} C _inst_1 D _inst_2 S T)} {Q : Opposite.{succ (max u2 u1)} (CategoryTheory.CostructuredArrow.{u1, u1, u2, u3} C _inst_1 D _inst_2 S T)} {f : Quiver.Hom.{succ u1, max u2 u1} (Opposite.{succ (max u2 u1)} (CategoryTheory.CostructuredArrow.{u1, u1, u2, u3} C _inst_1 D _inst_2 S T)) (Quiver.opposite.{max u2 u1, succ u1} (CategoryTheory.CostructuredArrow.{u1, u1, u2, u3} C _inst_1 D _inst_2 S T) (CategoryTheory.CategoryStruct.toQuiver.{u1, max u2 u1} (CategoryTheory.CostructuredArrow.{u1, u1, u2, u3} C _inst_1 D _inst_2 S T) (CategoryTheory.Category.toCategoryStruct.{u1, max u2 u1} (CategoryTheory.CostructuredArrow.{u1, u1, 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+Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unopₓ'. -/
 /-- Technical lemma for `quotient_equiv`. -/
 theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (CostructuredArrow S T)ᵒᵖ}
     {f : P ⟶ op A} {g : Q ⟶ op A} [Mono f.unop.left.op] [Mono g.unop.left.op]
@@ -293,11 +298,10 @@ theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (Costruc
   rw [← unop_comp]
   simp only [subobject.of_mk_le_mk_comp, Quiver.Hom.unop_op]
 #align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop
--/
 
 /- warning: category_theory.costructured_arrow.quotient_equiv -> CategoryTheory.CostructuredArrow.quotientEquiv is a dubious translation:
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(CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A)) P))) q) (CategoryTheory.Comma.hom.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A))))
 Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.quotient_equiv CategoryTheory.CostructuredArrow.quotientEquivₓ'. -/

9d2f0748

bump to nightly-2023-04-28-02

mathlib commit https://github.com/leanprover-community/mathlib/commit/fa78268d4d77cb2b2fbc89f0527e2e7807763780

473bb540

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.subobject.comma
-! leanprover-community/mathlib commit 70fd9563a21e7b963887c9360bd29b2393e6225a
+! leanprover-community/mathlib commit 9d2f0748e6c50d7a2657c564b1ff2c695b39148d
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -15,6 +15,9 @@ import Mathbin.CategoryTheory.Limits.Shapes.FiniteLimits
 /-!
 # Subobjects in the category of structured arrows
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 We compute the subobjects of an object `A` in the category `structured_arrow S T` for `T : C ⥤ D`
 and `S : D` as a subtype of the subobjects of `A.right`. We deduce that `structured_arrow S T` is
 well-powered if `C` is.

70fd9563

bump to nightly-2023-04-25-08

mathlib commit https://github.com/leanprover-community/mathlib/commit/2651125b48fc5c170ab1111afd0817c903b1fc6c

c15cbbfd

Diff

@@ -48,6 +48,7 @@ namespace StructuredArrow
 
 variable {S : D} {T : C ⥤ D}
 
+#print CategoryTheory.StructuredArrow.projectSubobject /-
 /-- Every subobject of a structured arrow can be projected to a subobject of the underlying
     object. -/
 def projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
@@ -58,13 +59,22 @@ def projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T}
   refine' subobject.mk_eq_mk_of_comm _ _ ((proj S T).mapIso i) _
   exact congr_arg comma_morphism.right hi
 #align category_theory.structured_arrow.project_subobject CategoryTheory.StructuredArrow.projectSubobject
+-/
 
+#print CategoryTheory.StructuredArrow.projectSubobject_mk /-
 @[simp]
 theorem projectSubobject_mk [HasLimits C] [PreservesLimits T] {A P : StructuredArrow S T}
     (f : P ⟶ A) [Mono f] : projectSubobject (Subobject.mk f) = Subobject.mk f.right :=
   rfl
 #align category_theory.structured_arrow.project_subobject_mk CategoryTheory.StructuredArrow.projectSubobject_mk
+-/
 
+/- warning: category_theory.structured_arrow.project_subobject_factors -> CategoryTheory.StructuredArrow.projectSubobject_factors is a dubious translation:
+lean 3 declaration is
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+but is expected to have type
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+Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factorsₓ'. -/
 theorem projectSubobject_factors [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
     ∀ P : Subobject A, ∃ q, q ≫ T.map (projectSubobject P).arrow = A.Hom :=
   Subobject.ind _ fun P f hf =>
@@ -74,6 +84,12 @@ theorem projectSubobject_factors [HasLimits C] [PreservesLimits T] {A : Structur
       simp [← T.map_comp]⟩
 #align category_theory.structured_arrow.project_subobject_factors CategoryTheory.StructuredArrow.projectSubobject_factors
 
+/- warning: category_theory.structured_arrow.lift_subobject -> CategoryTheory.StructuredArrow.liftSubobject is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.lift_subobject CategoryTheory.StructuredArrow.liftSubobjectₓ'. -/
 /-- A subobject of the underlying object of a structured arrow can be lifted to a subobject of
     the structured arrow, provided that there is a morphism making the subobject into a structured
     arrow. -/
@@ -83,6 +99,12 @@ def liftSubobject {A : StructuredArrow S T} (P : Subobject A.right) {q}
   Subobject.mk (homMk P.arrow hq : mk q ⟶ A)
 #align category_theory.structured_arrow.lift_subobject CategoryTheory.StructuredArrow.liftSubobject
 
+/- warning: category_theory.structured_arrow.lift_project_subobject -> CategoryTheory.StructuredArrow.lift_projectSubobject is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobjectₓ'. -/
 /-- Projecting and then lifting a subobject recovers the original subobject, because there is at
     most one morphism making the projected subobject into a structured arrow. -/
 theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredArrow S T} :
@@ -108,6 +130,12 @@ theorem lift_projectSubobject [HasLimits C] [PreservesLimits T] {A : StructuredA
               simp))
 #align category_theory.structured_arrow.lift_project_subobject CategoryTheory.StructuredArrow.lift_projectSubobject
 
+/- warning: category_theory.structured_arrow.subobject_equiv -> CategoryTheory.StructuredArrow.subobjectEquiv is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquivₓ'. -/
 /-- If `A : S → T.obj B` is a structured arrow for `S : D` and `T : C ⥤ D`, then we can explicitly
     describe the subobjects of `A` as the subobjects `P` of `B` in `C` for which `A.hom` factors
     through the image of `P` under `T`. -/
@@ -133,12 +161,14 @@ def subobjectEquiv [HasLimits C] [PreservesLimits T] (A : StructuredArrow S T) :
           exact congr_arg comma_morphism.right (subobject.of_mk_le_mk_comp h))
 #align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquiv
 
+#print CategoryTheory.StructuredArrow.wellPowered_structuredArrow /-
 /-- If `C` is well-powered and complete and `T` preserves limits, then `structured_arrow S T` is
     well-powered. -/
 instance wellPowered_structuredArrow [WellPowered C] [HasLimits C] [PreservesLimits T] :
     WellPowered (StructuredArrow S T)
     where subobject_small X := small_map (subobjectEquiv X).toEquiv
 #align category_theory.structured_arrow.well_powered_structured_arrow CategoryTheory.StructuredArrow.wellPowered_structuredArrow
+-/
 
 end StructuredArrow
 
@@ -146,6 +176,7 @@ namespace CostructuredArrow
 
 variable {S : C ⥤ D} {T : D}
 
+#print CategoryTheory.CostructuredArrow.projectQuotient /-
 /-- Every quotient of a costructured arrow can be projected to a quotient of the underlying
     object. -/
 def projectQuotient [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
@@ -157,14 +188,23 @@ def projectQuotient [HasColimits C] [PreservesColimits S] {A : CostructuredArrow
   have := congr_arg Quiver.Hom.unop hi
   simpa using congr_arg comma_morphism.left this
 #align category_theory.costructured_arrow.project_quotient CategoryTheory.CostructuredArrow.projectQuotient
+-/
 
+#print CategoryTheory.CostructuredArrow.projectQuotient_mk /-
 @[simp]
 theorem projectQuotient_mk [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T}
     {P : (CostructuredArrow S T)ᵒᵖ} (f : P ⟶ op A) [Mono f] :
     projectQuotient (Subobject.mk f) = Subobject.mk f.unop.left.op :=
   rfl
 #align category_theory.costructured_arrow.project_quotient_mk CategoryTheory.CostructuredArrow.projectQuotient_mk
+-/
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factorsₓ'. -/
 theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
     ∀ P : Subobject (op A), ∃ q, S.map (projectQuotient P).arrow.unop ≫ q = A.Hom :=
   Subobject.ind _ fun P f hf =>
@@ -175,6 +215,12 @@ theorem projectQuotient_factors [HasColimits C] [PreservesColimits S] {A : Costr
       simp⟩
 #align category_theory.costructured_arrow.project_quotient_factors CategoryTheory.CostructuredArrow.projectQuotient_factors
 
+/- warning: category_theory.costructured_arrow.lift_quotient -> CategoryTheory.CostructuredArrow.liftQuotient is a dubious translation:
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+Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.lift_quotient CategoryTheory.CostructuredArrow.liftQuotientₓ'. -/
 /-- A quotient of the underlying object of a costructured arrow can be lifted to a quotient of
     the costructured arrow, provided that there is a morphism making the quotient into a
     costructured arrow. -/
@@ -184,6 +230,12 @@ def liftQuotient {A : CostructuredArrow S T} (P : Subobject (op A.left)) {q}
   Subobject.mk (homMk P.arrow.unop hq : A ⟶ mk q).op
 #align category_theory.costructured_arrow.lift_quotient CategoryTheory.CostructuredArrow.liftQuotient
 
+/- warning: category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop -> CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop is a dubious translation:
+lean 3 declaration is
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+Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unopₓ'. -/
 /-- Technical lemma for `lift_project_quotient`. -/
 @[simp]
 theorem unop_left_comp_underlyingIso_hom_unop {A : CostructuredArrow S T}
@@ -197,6 +249,12 @@ theorem unop_left_comp_underlyingIso_hom_unop {A : CostructuredArrow S T}
   rw [← unop_comp, subobject.underlying_iso_hom_comp_eq_mk]
 #align category_theory.costructured_arrow.unop_left_comp_underlying_iso_hom_unop CategoryTheory.CostructuredArrow.unop_left_comp_underlyingIso_hom_unop
 
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+Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotientₓ'. -/
 /-- Projecting and then lifting a quotient recovers the original quotient, because there is at most
     one morphism making the projected quotient into a costructured arrow. -/
 theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : CostructuredArrow S T} :
@@ -219,6 +277,7 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
                 simp)))
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
 
+#print CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop /-
 /-- Technical lemma for `quotient_equiv`. -/
 theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (CostructuredArrow S T)ᵒᵖ}
     {f : P ⟶ op A} {g : Q ⟶ op A} [Mono f.unop.left.op] [Mono g.unop.left.op]
@@ -231,7 +290,14 @@ theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (Costruc
   rw [← unop_comp]
   simp only [subobject.of_mk_le_mk_comp, Quiver.Hom.unop_op]
 #align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop
+-/
 
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(CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A))))))) (Opposite.{succ u2} C) (CategoryTheory.CategoryStruct.toQuiver.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.toCategoryStruct.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1))) (CategoryTheory.Functor.toPrefunctor.{max u2 u1, u1, max u2 u1, u2} (CategoryTheory.Subobject.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1) (Opposite.op.{succ u2} C (CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A))) (Preorder.smallCategory.{max u2 u1} (CategoryTheory.Subobject.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1) (Opposite.op.{succ u2} C (CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A))) (PartialOrder.toPreorder.{max u2 u1} (CategoryTheory.Subobject.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1) (Opposite.op.{succ u2} C (CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A))) (CategoryTheory.instPartialOrderSubobject.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1) (Opposite.op.{succ u2} C (CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A))))) (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1) (CategoryTheory.Subobject.underlying.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1) (Opposite.op.{succ u2} C (CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A)))) P) (Opposite.op.{succ u2} C (CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A)) (CategoryTheory.Subobject.arrow.{u1, u2} (Opposite.{succ u2} C) (CategoryTheory.Category.opposite.{u1, u2} C _inst_1) (Opposite.op.{succ u2} C (CategoryTheory.Comma.left.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A)) P))) q) (CategoryTheory.Comma.hom.{u1, u1, u1, u2, u1, u3} C _inst_1 (CategoryTheory.Discrete.{u1} PUnit.{succ u1}) (CategoryTheory.discreteCategory.{u1} PUnit.{succ u1}) D _inst_2 S (CategoryTheory.Functor.fromPUnit.{u1, u3} D _inst_2 T) A))))
+Case conversion may be inaccurate. Consider using '#align category_theory.costructured_arrow.quotient_equiv CategoryTheory.CostructuredArrow.quotientEquivₓ'. -/
 /-- If `A : S.obj B ⟶ T` is a costructured arrow for `S : C ⥤ D` and `T : D`, then we can
     explicitly describe the quotients of `A` as the quotients `P` of `B` in `C` for which `A.hom`
     factors through the image of `P` under `S`. -/
@@ -261,12 +327,14 @@ def quotientEquiv [HasColimits C] [PreservesColimits S] (A : CostructuredArrow S
           simpa [-subobject.of_mk_le_mk_comp] using congr_arg comma_morphism.left this)
 #align category_theory.costructured_arrow.quotient_equiv CategoryTheory.CostructuredArrow.quotientEquiv
 
+#print CategoryTheory.CostructuredArrow.well_copowered_costructuredArrow /-
 /-- If `C` is well-copowered and cocomplete and `S` preserves colimits, then
     `costructured_arrow S T` is well-copowered. -/
 instance well_copowered_costructuredArrow [WellPowered Cᵒᵖ] [HasColimits C] [PreservesColimits S] :
     WellPowered (CostructuredArrow S T)ᵒᵖ
     where subobject_small X := small_map (quotientEquiv (unop X)).toEquiv
 #align category_theory.costructured_arrow.well_copowered_costructured_arrow CategoryTheory.CostructuredArrow.well_copowered_costructuredArrow
+-/
 
 end CostructuredArrow

70fd9563

bump to nightly-2023-04-17-18

mathlib commit https://github.com/leanprover-community/mathlib/commit/17ad94b4953419f3e3ce3e77da3239c62d1d09f0

9d4337e1

Diff

@@ -220,17 +220,17 @@ theorem lift_projectQuotient [HasColimits C] [PreservesColimits S] {A : Costruct
 #align category_theory.costructured_arrow.lift_project_quotient CategoryTheory.CostructuredArrow.lift_projectQuotient
 
 /-- Technical lemma for `quotient_equiv`. -/
-theorem unop_left_comp_ofMkLeMk_unop {A : CostructuredArrow S T} {P Q : (CostructuredArrow S T)ᵒᵖ}
+theorem unop_left_comp_ofMkLEMk_unop {A : CostructuredArrow S T} {P Q : (CostructuredArrow S T)ᵒᵖ}
     {f : P ⟶ op A} {g : Q ⟶ op A} [Mono f.unop.left.op] [Mono g.unop.left.op]
     (h : Subobject.mk f.unop.left.op ≤ Subobject.mk g.unop.left.op) :
-    g.unop.left ≫ (Subobject.ofMkLeMk f.unop.left.op g.unop.left.op h).unop = f.unop.left :=
+    g.unop.left ≫ (Subobject.ofMkLEMk f.unop.left.op g.unop.left.op h).unop = f.unop.left :=
   by
   conv_lhs =>
     congr
     rw [← Quiver.Hom.unop_op g.unop.left]
   rw [← unop_comp]
   simp only [subobject.of_mk_le_mk_comp, Quiver.Hom.unop_op]
-#align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLeMk_unop
+#align category_theory.costructured_arrow.unop_left_comp_of_mk_le_mk_unop CategoryTheory.CostructuredArrow.unop_left_comp_ofMkLEMk_unop
 
 /-- If `A : S.obj B ⟶ T` is a costructured arrow for `S : C ⥤ D` and `T : D`, then we can
     explicitly describe the quotients of `A` as the quotients `P` of `B` in `C` for which `A.hom`

70fd9563

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

70fd9563

Revert "chore: revert #7703 (#7710)"

This reverts commit f3695eb2.

ab56fa28

Diff

@@ -114,6 +114,10 @@ def subobjectEquiv [HasLimits C] [PreservesLimits T] (A : StructuredArrow S T) :
       exact congr_arg CommaMorphism.right (Subobject.ofMkLEMk_comp h)
 #align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquiv
 
+-- These lemmas have always been bad (#7657), but leanprover/lean4#2644 made `simp` start noticing
+attribute [nolint simpNF] CategoryTheory.StructuredArrow.subobjectEquiv_symm_apply
+  CategoryTheory.StructuredArrow.subobjectEquiv_apply_coe
+
 /-- If `C` is well-powered and complete and `T` preserves limits, then `StructuredArrow S T` is
     well-powered. -/
 instance wellPowered_structuredArrow [WellPowered C] [HasLimits C] [PreservesLimits T] :

70fd9563

chore: revert #7703 (#7710)

This reverts commit 26eb2b0a.

f3695eb2

Diff

@@ -114,10 +114,6 @@ def subobjectEquiv [HasLimits C] [PreservesLimits T] (A : StructuredArrow S T) :
       exact congr_arg CommaMorphism.right (Subobject.ofMkLEMk_comp h)
 #align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquiv
 
--- These lemmas have always been bad (#7657), but leanprover/lean4#2644 made `simp` start noticing
-attribute [nolint simpNF] CategoryTheory.StructuredArrow.subobjectEquiv_symm_apply
-  CategoryTheory.StructuredArrow.subobjectEquiv_apply_coe
-
 /-- If `C` is well-powered and complete and `T` preserves limits, then `StructuredArrow S T` is
     well-powered. -/
 instance wellPowered_structuredArrow [WellPowered C] [HasLimits C] [PreservesLimits T] :

70fd9563

chore: bump toolchain to v4.2.0-rc2 (#7703)

This includes all the changes from #7606.

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>

26eb2b0a

Diff

@@ -114,6 +114,10 @@ def subobjectEquiv [HasLimits C] [PreservesLimits T] (A : StructuredArrow S T) :
       exact congr_arg CommaMorphism.right (Subobject.ofMkLEMk_comp h)
 #align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquiv
 
+-- These lemmas have always been bad (#7657), but leanprover/lean4#2644 made `simp` start noticing
+attribute [nolint simpNF] CategoryTheory.StructuredArrow.subobjectEquiv_symm_apply
+  CategoryTheory.StructuredArrow.subobjectEquiv_apply_coe
+
 /-- If `C` is well-powered and complete and `T` preserves limits, then `StructuredArrow S T` is
     well-powered. -/
 instance wellPowered_structuredArrow [WellPowered C] [HasLimits C] [PreservesLimits T] :

70fd9563

chore: remove trailing space in backticks (#7617)

This will improve spaces in the mathlib4 docs.

9106dcf8

Diff

@@ -17,7 +17,7 @@ and `S : D` as a subtype of the subobjects of `A.right`. We deduce that `Structu
 well-powered if `C` is.
 
 ## Main declarations
-* `StructuredArrow.subobjectEquiv `: the order-equivalence between `Subobject A` and a subtype of
+* `StructuredArrow.subobjectEquiv`: the order-equivalence between `Subobject A` and a subtype of
   `Subobject A.right`.
 
 ## Implementation notes

70fd9563

style: fix wrapping of where (#7149)

084cfb35

Diff

@@ -117,8 +117,8 @@ def subobjectEquiv [HasLimits C] [PreservesLimits T] (A : StructuredArrow S T) :
 /-- If `C` is well-powered and complete and `T` preserves limits, then `StructuredArrow S T` is
     well-powered. -/
 instance wellPowered_structuredArrow [WellPowered C] [HasLimits C] [PreservesLimits T] :
-    WellPowered (StructuredArrow S T)
-    where subobject_small X := small_map (subobjectEquiv X).toEquiv
+    WellPowered (StructuredArrow S T) where
+  subobject_small X := small_map (subobjectEquiv X).toEquiv
 #align category_theory.structured_arrow.well_powered_structured_arrow CategoryTheory.StructuredArrow.wellPowered_structuredArrow
 
 end StructuredArrow
@@ -235,8 +235,8 @@ def quotientEquiv [HasColimits C] [PreservesColimits S] (A : CostructuredArrow S
 /-- If `C` is well-copowered and cocomplete and `S` preserves colimits, then
     `CostructuredArrow S T` is well-copowered. -/
 instance well_copowered_costructuredArrow [WellPowered Cᵒᵖ] [HasColimits C] [PreservesColimits S] :
-    WellPowered (CostructuredArrow S T)ᵒᵖ
-    where subobject_small X := small_map (quotientEquiv (unop X)).toEquiv
+    WellPowered (CostructuredArrow S T)ᵒᵖ where
+  subobject_small X := small_map (quotientEquiv (unop X)).toEquiv
 #align category_theory.costructured_arrow.well_copowered_costructured_arrow CategoryTheory.CostructuredArrow.well_copowered_costructuredArrow
 
 end CostructuredArrow

70fd9563

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) 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.subobject.comma
-! leanprover-community/mathlib commit 70fd9563a21e7b963887c9360bd29b2393e6225a
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.CategoryTheory.Subobject.WellPowered
 import Mathlib.CategoryTheory.Limits.Preserves.Finite
 import Mathlib.CategoryTheory.Limits.Shapes.FiniteLimits
 
+#align_import category_theory.subobject.comma from "leanprover-community/mathlib"@"70fd9563a21e7b963887c9360bd29b2393e6225a"
+
 /-!
 # Subobjects in the category of structured arrows

70fd9563

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

@@ -112,8 +112,8 @@ def subobjectEquiv [HasLimits C] [PreservesLimits T] (A : StructuredArrow S T) :
     refine' ⟨fun h => Subobject.mk_le_mk_of_comm _ _, fun h => _⟩
     · exact homMk (Subobject.ofMkLEMk _ _ h)
         ((cancel_mono (T.map g.right)).1 (by simp [← T.map_comp]))
-    . aesop_cat
-    . refine' Subobject.mk_le_mk_of_comm (Subobject.ofMkLEMk _ _ h).right _
+    · aesop_cat
+    · refine' Subobject.mk_le_mk_of_comm (Subobject.ofMkLEMk _ _ h).right _
       exact congr_arg CommaMorphism.right (Subobject.ofMkLEMk_comp h)
 #align category_theory.structured_arrow.subobject_equiv CategoryTheory.StructuredArrow.subobjectEquiv
 
@@ -224,7 +224,7 @@ def quotientEquiv [HasColimits C] [PreservesColimits S] (A : CostructuredArrow S
       dsimp
       simp only [← S.map_comp_assoc, unop_left_comp_ofMkLEMk_unop, unop_op, CommaMorphism.w,
         Functor.const_obj_obj, right_eq_id, Functor.const_obj_map, Category.comp_id]
-    . apply Quiver.Hom.unop_inj
+    · apply Quiver.Hom.unop_inj
       ext
       exact unop_left_comp_ofMkLEMk_unop _
     · refine' Subobject.mk_le_mk_of_comm (Subobject.ofMkLEMk _ _ h).unop.left.op _

70fd9563

feat: port CategoryTheory.Subobject.Comma (#3502)

Co-authored-by: Moritz Firsching <firsching@google.com> Co-authored-by: Joël Riou <joel.riou@universite-paris-saclay.fr>

44cdd3a0

`category_theory.subobject.comma` ⟷ `Mathlib.CategoryTheory.Subobject.Comma`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 2 + 251

category_theory.subobject.comma ⟷ Mathlib.CategoryTheory.Subobject.Comma

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 2 + 251

`category_theory.subobject.comma` ⟷ `Mathlib.CategoryTheory.Subobject.Comma`