fact: Definition cell_of_opcartesian_lift_2cell_is_opcartesian {x y : B} {xx : D x} {yy : D y} {f g : x --> y} {ff : xx -->[ f ] yy} {α : f ==> g} (ℓ : opcartesian_lift_2cell ff α) : is_opcartesian_2cell (cell_of_opcartesian_lift_2cell ℓ) := pr22 ℓ.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Fibrations UniMath.Bicategories.Core.Bicat UniMath.Bicategories.Core.Invertible_2cells UniMath.Bicategories.Core.Univalence UniMath.Bicategories.Core.TransportLaws UniMath.CategoryTheory.DisplayedCats.Core UniMath.Bicategories.DisplayedBicats.DispBicat UniMath.Bicategories.DisplayedBicats.DispInvertibles