fact: Definition abses_directsum_pushout_morphism `{Univalence} {A A' B C D D' : AbGroup} {E : AbSES B A'} {F : AbSES C D'} (f : A' $-> A) (g : D' $-> D) : AbSESMorphism (abses_direct_sum E F) (abses_direct_sum (abses_pushout f E) (abses_pushout g F)) := functor_abses_directsum (abses_pushout_morphism E f) (abses_pushout_morphism F g).
imports: Basics Types Truncations.Core WildCat Pointed.Core Homotopy.ExactSequence HIT.epi Modalities.ReflectiveSubuniverse AbelianGroup AbPushout AbHom AbGroups.Biproduct AbSES.Core AbSES.DirectSum