Definition lwhisker_is_cartesian : UU := ∏ (x y : B) (h : y --> x) (f g : x --> e) (γ : f ==> g) (Hγ : is_cartesian_2cell_sfib γ), is_cartesian_2cell_sfib (h ◃ γ).
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.DisplayedCats.StreetFibration. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Invertible_2cells. Require Import UniMath.Bicategories.Core.Univalence.