proposition: Lemma is_lim_seq_le_le (u v w : nat -> R) (l : Rbar) : (forall n, u n <= v n <= w n) -> is_lim_seq u l -> is_lim_seq w l -> is_lim_seq v l.
proof: Proof. intros H. apply filterlim_le_le. now apply filter_forall. Qed.
imports: Coq(Reals Psatz ssreflect) Rcomplements Rbar Lub Markov Hierarchy