fact: Definition twosided_disp_cat_ob_mor_to_ob {C₁ C₂ : precategory_ob_mor} {D : twosided_disp_cat_ob_mor C₁ C₂} (x : C₁) (y : C₂) : UU := pr1 D x y.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.PrecategoryBinProduct