fact: Definition Sum_rec {C: HSET} (f: pr1hSet A -> pr1hSet C) (g: pr1hSet B -> pr1hSet C)(c: Sum) : pr1hSet C := pr1 c C f g.
imports: UniMath.Foundations.Init UniMath.Foundations.Preamble UniMath.Foundations.PartA UniMath.Foundations.Sets UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.FunctorAlgebras UniMath.CategoryTheory.Categories.HSET.Core UniMath.CategoryTheory.Categories.HSET.Structures