proposition: Lemma iscvgC c : iscvg c%:S.
proof: Proof. by exists c; apply/ncvgC. Qed.
imports: mathcomp(all_ssreflect all_algebra) mathcomp.bigenough.bigenough mathcomp.classical(boolp classical_sets functions) mathcomp.classical(mathcomp_extra) xfinmap ereal reals discrete topology