proposition: Lemma resized_sized `(x : t a (size (unsize n))) : resized (sized x) = x.
proof: Proof. unfold sized, resized. now destruct (size_unsize n); simpl. Qed.
imports: Category.Lib Category.Theory.Category Category.Theory.Isomorphism Category.Theory.Functor Category.Theory.Adjunction Category.Structure.Terminal Category.Structure.Cartesian Category.Structure.BiCCC Category.Instance.Fun Category.Instance.Coq Category.Instance.Sets Coq.Vectors.Vector