proposition: Lemma Rser_cv_Vn : {l | Rser_cv Vn l}.
proof: Proof. apply Rser_abs_cv_cv. eapply Rser_big_O_cv; [apply Vn_maj|]. apply Rser_cv_Riemann. Qed.
imports: Reals Rsequence_facts Rseries_def Rseries_facts Rseries_usual Rpser Rintegral RTaylor Lia Lra Wallis