proposition: Lemma measurable_itv_infty_bnd b x : G.-sigma.-measurable [set` Interval -oo%O (BSide b x)].
proof: Proof. by rewrite -setCitvr; apply: measurableC; exact: measurable_itv_bnd_infty. 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