Definition in_ {C:category} {I} {c:I -> ob C} (sum : Sum c) (i:I) : c i --> universalObject sum := rm_opp_mor (universalElement sum i).
Require Import UniMath.Foundations.Preamble. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.Univalence. Require Import Require Import Require Import UniMath.MoreFoundations.Tactics.