proposition: Lemma is_cvgMrE g a (f := fun=> a) : a != 0 -> cvg (f \* g @ F) = cvg (g @ F).
proof: Proof. exact: is_cvgZrE. 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