Definition two_cat_lunitor {C : two_precat} {x y : C} (f : x --> y) : identity _ · f ==> f := idto2mor (id_left f).
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.