Monomorphisms in Grothendieck abelian categories #
In this file, we show that in a Grothendieck abelian category, monomorphisms are stable under transfinite composition.
instance
CategoryTheory.MorphismProperty.TransfiniteCompositionOfShape.mono.map_bot_le
{C : Type u}
[Category.{v, u} C]
[Abelian C]
[IsGrothendieckAbelian.{w, v, u} C]
{J : Type w}
[LinearOrder J]
[SuccOrder J]
[OrderBot J]
[WellFoundedLT J]
{X Y : C}
{f : X ⟶ Y}
(h : (monomorphisms C).TransfiniteCompositionOfShape J f)
(j : J)
:
theorem
CategoryTheory.MorphismProperty.TransfiniteCompositionOfShape.mono
{C : Type u}
[Category.{v, u} C]
[Abelian C]
[IsGrothendieckAbelian.{w, v, u} C]
{J : Type w}
[LinearOrder J]
[SuccOrder J]
[OrderBot J]
[WellFoundedLT J]
{X Y : C}
{f : X ⟶ Y}
(h : (monomorphisms C).TransfiniteCompositionOfShape J f)
:
Mono f
instance
CategoryTheory.MorphismProperty.TransfiniteCompositionOfShape.mono_map
{C : Type u}
[Category.{v, u} C]
[Abelian C]
[IsGrothendieckAbelian.{w, v, u} C]
{J : Type w}
[LinearOrder J]
[SuccOrder J]
[OrderBot J]
[WellFoundedLT J]
{X Y : C}
{f : X ⟶ Y}
(h : (monomorphisms C).TransfiniteCompositionOfShape J f)
(j j' : J)
(f✝ : j ⟶ j')
: