Definition is_binary_coprod_enriched_arrow {w : C} (f : x --> w) (g : y --> w) : a --> w. Proof. refine (enriched_to_arr E _). use (BinProductArrow _ (is_binary_coprod_enriched_to_BinProduct Ha w)). - exact (enriched_from_arr E f). - exact (enriched_from_arr E g). Defined.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Monoidal.Categories. Require Import UniMath.CategoryTheory.EnrichedCats.Enrichment. Require Import UniMath.CategoryTheory.Limits.BinProducts. Require Import UniMath.CategoryTheory.Limits.BinCoproducts. Import MonoidalNotations. Section BinaryCoproductFromUnderlying. End BinaryCoproductFromUnderlying.