Definition sum_of_functors {Q C₁ C₂ : category} (F : C₁ ⟶ Q) (G : C₂ ⟶ Q) : bincoprod_of_category C₁ C₂ ⟶ Q. Proof. use make_functor. - exact (sum_of_functors_data F G). - exact (sum_of_functors_is_functor F G). Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.NaturalTransformations. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.whiskering.