Theorem CategoryTheory.Abelian.Ext.comp_assoc_of_third_deg_zero

Modification history

2024-08-23 14:42
Mathlib/Algebra/Homology/DerivedCategory/Ext/Basic.lean
feat(Algebra/Homology): the Ext class of a short exact sequence (#14793) …
Added CategoryTheory.Abelian.Ext.comp_assoc_of_third_deg_zeroView on Github →