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Theorems · Definition · algebraic topology

SSet.PtSimplex.opEquiv

{X : SSet} →
  {n : ℕ} → {x : X.obj (Opposite.op { len := 0 })} → X.op.PtSimplex n (SSet.opObjEquiv.symm x) ≃ X.PtSimplex n x

The bijection between n-simplices of X.op and of X that are constant on the boundary.

Defined in
Mathlib.AlgebraicTopology.SimplicialSet.KanComplex.MulStruct
Cited by
2 results in Mathlib
Foundations
Depth 97 from the axioms · uses propext, Classical.choice, Quot.sound

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