fact: Definition functor_ab_biprod_surjection `{Funext} {A A' B B' : AbGroup} (p : A $-> B) (p' : A' $-> B') `{S : IsSurjection p} `{S' : IsSurjection p'} : IsSurjection (functor_ab_biprod p p').
imports: Basics Types Truncations.Core WildCat HSet AbelianGroup Modalities.ReflectiveSubuniverse