Theorem SSet.stdSimplex.faceSingletonIso_zero_hom_comp_ι_eq_δ

Modification history

2025-12-05 16:31
Mathlib/AlgebraicTopology/SimplicialSet/StdSimplex.lean
feat(AlgebraicTopology): horns in `Δ[2]` as pushouts (#31802) …
Added SSet.stdSimplex.faceSingletonIso_zero_hom_comp_ι_eq_δView on Github →