proposition: Lemma is_interval_measurable (R : realType) (I : set R) : is_interval I -> measurable I.
proof: Proof. by move/is_intervalP => ->; exact: measurable_itv. Qed.
imports: mathcomp(all_ssreflect ssralg ssrnum ssrint interval) mathcomp(finmap fingroup perm rat) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality fsbigop) reals ereal signed topology numfun normedtype HB(structures) sequences esum measure real_interval realfun exp lebesgue_stieltjes_measure