Definition lwhisker_functor_data (f : C⟦a, b⟧) : functor_data (hom b c) (hom a c). Proof. exists (fun g => f · g). exact (fun g1 g2 x => f ◃ x). Defined.
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.