fact: Definition isaprop_is_cartesian_2cell_sfib {x : B} {f : x --> e} {g : x --> e} (γ : f ==> g) : isaprop (is_cartesian_2cell_sfib γ).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.DisplayedCats.StreetFibration UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Invertible_2cells UniMath.Bicategories.Core.Univalence