Definition lassociator_lassociator {a b c d e: C} (f : C⟦a, b⟧) (g : C⟦b, c⟧) (h : c --> d) (i : C⟦d, e⟧) : (f ◃ lassociator g h i) • lassociator _ _ _ • (lassociator _ _ _ ▹ i) = lassociator f g _ • lassociator _ _ _ := pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 (pr2 C)))))))))))))))))))) _ _ _ _ _ f g h i.
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.