(** * Operations *)
(** Constant functions *)
Section Const.
Context {K : AbsRing} {V : NormedModule K}.

(* Specifications: *)
Lemma is_derive_const :
forall (a : V) (x : K), is_derive (fun _ : K => a) x zero.
Lemma ex_derive_const :
forall (a : V) (x : K), ex_derive (fun _ => a) x.