`{Univalence} {A0 A1 A2 B : AbGroup} (f : A0 $-> A1) (g : A1 $-> A2) : abses_pushout (g $o f) == abses_pushout (B:=B) g o abses_pushout f := equiv_path_data_homotopy _ _ (' f g).
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.