fact: Definition abses_path_data_compose {B A : AbGroup@{u}} {E F G : AbSES B A} (p : E $-> F) (q : F $-> G) : E $-> G := (q.1 $oE p.1; ((fun x => ap q.1 (fst p.2 x) @ fst q.2 x), (fun x => snd p.2 x @ snd q.2 (p.1 x)))).
imports: Basics Types Truncations.Core HSet WildCat Groups.QuotientGroup Groups.ShortExactSequence AbelianGroup AbGroups.Biproduct AbHom Homotopy.ExactSequence Pointed Modalities.ReflectiveSubuniverse