Theorem CategoryTheory.Abelian.epi_of_epi_of_epi_of_mono

Modification history

2023-12-21 16:16
Mathlib/CategoryTheory/Abelian/DiagramLemmas/Four.lean
refactor: use the new homology API for the four and the five lemmas (#9022) …
Modified CategoryTheory.Abelian.epi_of_epi_of_epi_of_monoView on Github →
2023-05-12 08:51
Mathlib/CategoryTheory/Abelian/DiagramLemmas/Four.lean
feat: port CategoryTheory.Abelian.DiagramLemmas.Four (#3935)
Added CategoryTheory.Abelian.epi_of_epi_of_epi_of_monoView on Github →