proposition: Lemma scaleox (F : filter_on T) a (f : T -> V) (e : _ -> W) x : a *: ([o_F e of f] x) = [o_F e of a *: [o_F e of f]] x.
proof: Proof. by move: x; rewrite -/(_ *: _ =1 _) {1}scaleo. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrnum) mathcomp(mathcomp_extra boolp classical_sets functions) ereal reals signed topology normedtype prodnormedzmodule