fact: Definition isCoproduct (a : I -> C) (co : C) (ia : ∏ i, a i --> co) := ∏ (c : C) (f : ∏ i, a i --> c), ∃! (g : co --> c), ∏ i, ia i · g = f i.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.FunctorCategory UniMath.CategoryTheory.ProductCategory UniMath.CategoryTheory.Limits.Graphs.Colimits UniMath.CategoryTheory.whiskering