Definition idto2mor_lwhisker {x y z : C} (f : x --> y) {g h : y --> z} (p : g = h) : f ◃ idto2mor p = idto2mor (maponpaths (λ q, f · q) p).
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Setcategories. Require Import UniMath.CategoryTheory.Core.Univalence.