proposition: Lemma cvgNrNy f : (- f @ F --> -oo) <-> (f @ F --> +oo).
proof: Proof. by rewrite -cvgNry opprK. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrint ssrnum finmap matrix) mathcomp(rat interval zmodp vector fieldext falgebra) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality set_interval Rstruct) ereal reals signed topology prodnormedzmodule