fact: Definition inl_iso {C₁ C₂ : category} (x₁ x₂ : C₁) : z_iso x₁ x₂ ≃ @z_iso (bincoprod_of_category C₁ C₂) (inl x₁) (inl 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