proposition: Lemma scaler_continuous k : continuous (fun x : V => k *: x).
proof: Proof. by move=> x; apply: (cvg_comp2 (cvg_cst _) cvg_id (scale_continuous (_, _))). 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