Section Properties1.
Context {K : AbsRing} {V : NormedModule K}.
(** Extensionality *)
(** Index offset *)
End Properties1.

Lemma Series_incr_n_aux (a : nat -> R) (n : nat) :
(forall k, (k < n)%nat -> a k = 0)
-> Series a = Series (fun k => a (n + k)%nat).