Lemma lwhisker_hcomp {X Y Z : C} {f g : C⟦Y,Z⟧} (h : C⟦X, Y⟧) (α : f ==> g) : h ◃ α = id₂ h ⋆ α. Proof. apply pathsinv0. apply hcomp_identity_left. Qed.
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.Unitors.