Theorem CategoryTheory.Abelian.SpectralObject.isIso_map_fourδ₄Toδ₃_of_isZero

Modification history

2026-03-12 17:39
Mathlib/Algebra/Homology/SpectralObject/EpiMono.lean
feat(Algebra/Homology/SpectralObject): induced morphisms that are epi/mono (#36153)
Added CategoryTheory.Abelian.SpectralObject.isIso_map_fourδ₄Toδ₃_of_isZeroView on Github →