fact: Definition cat_coprod {A : Type} `{Is1Cat A} (x y : A) `{!BinaryCoproduct x y} : A := cat_prod (x : A^op) y.
imports: Basics EquivGpd Types.Prod Types.Sum WildCat.Core WildCat.ZeroGroupoid WildCat.Equiv WildCat.Yoneda WildCat.Universe WildCat.NatTrans WildCat.Opposite WildCat.Products