proposition: Lemma infinite_cv_radius_minus_compat : infinite_cv_radius (An - Bn).
proof: Proof. intro r ; rewrite <- Cv_radius_weak_Rabs, <- Rmin_diag ; apply Cv_radius_weak_minus ; [apply rAn | apply rBn]. Qed.
imports: Reals Rpser_def Rpser_def_simpl Rinterval Rsequence_def Rsequence_base_facts Rsequence_subsequence Rsequence_rewrite_facts Rsequence_cv_facts Rsequence_facts Rsequence_bound_facts Rsequence_sums_facts Rpow_facts PeanoNat Lra MyRIneq MyNat MyNNR