fact: Definition idtoiso_in_bincoprod_inl {C₁ C₂ : category} {x₁ x₂ : C₁} (p : x₁ = x₂) : pr1 (idtoiso p) = pr1 (@idtoiso (bincoprod_of_category C₁ C₂) (inl x₁) (inl x₂) (maponpaths inl 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