Definition rassociator_fun' {a b c d : C} (x : (C⟦a,b⟧ × C⟦b,c⟧) × C⟦c,d⟧) : (pr11 x · pr21 x) · pr2 x ==> pr11 x · (pr21 x · pr2 x) := rassociator (pr11 x) (pr21 x) (pr2 x).
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.Core.Functors. Require Import UniMath.CategoryTheory.Core.NaturalTransformations. Require Import UniMath.CategoryTheory.PrecategoryBinProduct.