Theorems · Theorem · category theory

CochainComplex.mappingCocone.inr_v_desc_f

∀ {C : Type u_1} [inst : CategoryTheory.Category.{v_1, u_1} C] [inst_1 : CategoryTheory.Preadditive C]
  {K L : CochainComplex C ℤ} (φ : K ⟶ L) [inst_2 : HomologicalComplex.HasHomotopyCofiber φ] {M : CochainComplex C ℤ}
  (α : CochainComplex.HomComplex.Cochain K M 0) (β : CochainComplex.HomComplex.Cocycle L M 1)
  (hαβ : CochainComplex.HomComplex.δ 0 1 α + (CochainComplex.HomComplex.Cochain.ofHom φ).comp ↑β ⋯ = 0) (p q : ℤ)
  (hpq : p + 1 = q),
  CategoryTheory.CategoryStruct.comp ((↑(CochainComplex.mappingCocone.inr φ)).v p q hpq)
      ((CochainComplex.mappingCocone.desc φ α β hαβ).f q) =
    (↑β).v p q hpq

Defined in

Mathlib.Algebra.Homology.HomotopyCategory.MappingCocone

Cited by

1 results in Mathlib

Foundations

Depth 74 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

CategoryTheory.CategoryCategoryTheory.PreadditiveHomologicalComplex.HasHomotopyCofiber