a a' (m : morphism C a' a) : Functor (a \ C) (a' \ C) := Eval hnf in coslice_category_morphism_induced_functor _ _ _ m.
Require Import Category.Core Functor.Core NaturalTransformation.Core. Require Import Category.Dual. Require Import Category.Prod. Require Import NaturalTransformation.Identity. Require Import FunctorCategory.Core Cat.Core. Require Import InitialTerminalCategory.Core InitialTerminalCategory.Functors. Import Comma.Core. Require Import HoTT.Tactics. Require Import Basics.Tactics.