proposition: Lemma measurable_expR (R : realType) : measurable_fun [set: R] expR.
proof: Proof. by apply: continuous_measurable_fun; exact: continuous_expR. 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