`{Univalence} {A A' B : AbGroup} (f f' : A $-> A') (h : f == f') : abses_pushout (B:=B) f == abses_pushout f' := equiv_path_data_homotopy _ _ (' _ _ h).
Require Import Basics Types Truncations.Core. Require Import WildCat Pointed.Core Homotopy.ExactSequence HIT.epi. Require Import Modalities.ReflectiveSubuniverse. Require Import AbelianGroup AbPushout AbHom AbGroups.Biproduct. Require Import AbSES.Core AbSES.DirectSum.