proposition: Lemma idTheta (F : filter_on T) (f : T -> V) : f =Theta_F f.
proof: Proof. rewrite eqThetaE bigThetaE eqOmegaO; split; exact/idO. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrnum) mathcomp(mathcomp_extra boolp classical_sets functions) ereal reals signed topology normedtype prodnormedzmodule