proposition: Corollary exp_in_out {x y : C} : exp_in ∘ exp_out ≈ @id _ (F (y^x)).
proof: Proof. apply iso_from_to. Qed.
imports: Category.Lib Category.Theory.Category Category.Theory.Isomorphism Category.Theory.Functor Category.Structure.Cartesian Category.Structure.Cartesian.Closed Category.Functor.Structure.Cartesian