proposition: Lemma max_mfun_subproof f g : @isMeasurableFun d aT rT (f \max g).
proof: Proof. by split; apply: measurable_maxr. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrnum ssrint interval finmap) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality fsbigop ) signed reals ereal topology normedtype sequences real_interval esum measure lebesgue_measure numfun