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Theorems · Theorem · algebraic topology

AlgebraicTopology.DoldKan.PInfty_comp_map_mono_eq_zero

∀ {C : Type u_1} [inst : CategoryTheory.Category.{v_1, u_1} C] [inst_1 : CategoryTheory.Preadditive C]
  (X : CategoryTheory.SimplicialObject C) {n : ℕ} {Δ' : SimplexCategory} (i : Δ' ⟶ { len := n })
  [hi : CategoryTheory.Mono i],
  Δ'.len ≠ n →
    ¬AlgebraicTopology.DoldKan.Isδ₀ i →
      CategoryTheory.CategoryStruct.comp (AlgebraicTopology.DoldKan.PInfty.f n) (X.map i.op) = 0
Defined in
Mathlib.AlgebraicTopology.DoldKan.NCompGamma
Cited by
1 results in Mathlib
Foundations
Depth 87 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CategoryTheory.CategoryCategoryTheory.PreadditiveCategoryTheory.Mono

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