fact: Definition inr_iso_map {C₁ C₂ : category} {x₁ x₂ : C₂} (f : z_iso x₁ x₂) : @z_iso (bincoprod_of_category C₁ C₂) (inr x₁) (inr x₂).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.whiskering