proposition: Lemma limeN f : cvg (f @ F) -> lim (\- f @ F) = - lim (f @ F).
proof: Proof. by move=> cf; apply/cvg_lim => //; apply: cvgeN. 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