Definition lwhisker_is_opcartesian : UU := ∏ (x y : B) (h : y --> x) (f g : x --> e) (γ : f ==> g) (Hγ : is_opcartesian_2cell_sopfib γ), is_opcartesian_2cell_sopfib (h ◃ γ).
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Invertible_2cells. Require Import UniMath.Bicategories.Core.Examples.OpCellBicat. Require Import UniMath.Bicategories.Core.Univalence. Require Import UniMath.Bicategories.Core.UnivalenceOp. Require Import UniMath.Bicategories.Morphisms.InternalStreetFibration.