fact: Definition equiv_functor_ab_biprod {A A' B B' : AbGroup} (f : A $-> A') (g : B $-> B') `{IsEquiv _ _ f} `{IsEquiv _ _ g} : GroupIsomorphism (ab_biprod A B) (ab_biprod A' B') := Build_GroupIsomorphism _ _ _ (isequiv_functor_ab_biprod f g).
imports: Basics Types Truncations.Core WildCat HSet AbelianGroup Modalities.ReflectiveSubuniverse