fact: Definition idtoiso_in_bincoprod_inr {C₁ C₂ : category} {x₁ x₂ : C₂} (p : x₁ = x₂) : pr1 (idtoiso p) = pr1 (@idtoiso (bincoprod_of_category C₁ C₂) (inr x₁) (inr x₂) (maponpaths inr p)).
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