Theorems · Theorem · category theory

CategoryTheory.Abelian.Ext.add_hom

∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : CategoryTheory.Abelian C]
  [inst_2 : CategoryTheory.HasExt C] {X Y : C} {n : ℕ} [inst_3 : HasDerivedCategory C]
  (α β : CategoryTheory.Abelian.Ext X Y n), (α + β).hom = α.hom + β.hom

Defined in

Mathlib.Algebra.Homology.DerivedCategory.Ext.Basic

Cited by

4 results in Mathlib

Foundations

Depth 111 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

CategoryTheory.CategoryCategoryTheory.AbelianCategoryTheory.HasExtHasDerivedCategory