proposition: Lemma measurable_int d T R mu D f : @integrable d T R mu D f -> measurable_fun D f.
proof: Proof. by rewrite unlock => /asboolP[]. 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