proposition: Lemma functorBinarySum_eqn {B C:category} (sum : BinarySums C) (F G : [B,C]) (b:B) : universalObject (functorBinarySum sum F G) ◾ b = universalObject (sum (F ◾ b) (G ◾ b)).
proof: Proof. reflexivity. Defined.
imports: UniMath.Foundations.Preamble UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.opp_precat UniMath.CategoryTheory.yoneda UniMath.CategoryTheory.Categories.HSET.Core UniMath.CategoryTheory.Categories.HSET.MonoEpiIso UniMath.CategoryTheory.RepresentableFunctors.Bifunctor UniMath.CategoryTheory.RepresentableFunctors.Precategories UniMath.MoreFoundations.Tactics