fact: Definition abses_pushout_inclusion_morphism {B A : AbGroup} (E : AbSES B A) : AbSESMorphism E (pt : AbSES B E) := abses_pushout_trivial_morphism E (inclusion E) grp_homo_id (fun _ => idpath).
imports: Basics Types Truncations.Core WildCat Pointed.Core Homotopy.ExactSequence HIT.epi Modalities.ReflectiveSubuniverse AbelianGroup AbPushout AbHom AbGroups.Biproduct AbSES.Core AbSES.DirectSum