Definition two_cat_rassociator {C : two_precat} {w x y z : C} (f : w --> x) (g : x --> y) (h : y --> z) : (f · g) · h ==> f · (g · h) := idto2mor (!(assoc f g h)).
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.