Proposition isaprop_preserves_is_left_lifting {B : bicat} {x y z a : B} {f : z --> x} {g : y --> x} (k : a --> z) {h : z --> y} {τ : f ==> h · g} (Hτ : is_left_lifting f g τ) : isaprop (preserves_is_left_lifting k Hτ). Proof. apply isaprop_is_left_lifting. Qed.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Prelude. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Examples.OpMorBicat. Require Import UniMath.Bicategories.Core.Examples.OpCellBicat.