fact: Definition abses_pullback_pcompose' {B0 B1 B2 A : AbGroup} (f : B0 $-> B1) (g : B1 $-> B2) : abses_pullback' f $o* abses_pullback' g $=>* abses_pullback' (A:=A) (g $o f).
imports: Basics Types HSet Limits.Pullback WildCat Pointed.Core Homotopy.ExactSequence Modalities.ReflectiveSubuniverse AbGroups.AbelianGroup AbGroups.AbPullback AbGroups.Biproduct AbSES.Core AbSES.DirectSum