proposition: Lemma variance_fin_num (X : {RV P >-> R}) : P.-integrable setT (EFin \o X) -> P.-integrable setT (EFin \o X ^+ 2)%R -> 'V_P[X] \is a fin_num.
proof: Proof. by move=> /[dup]; apply: covariance_fin_num. Qed.
imports: mathcomp(all_ssreflect) mathcomp(ssralg poly ssrnum ssrint interval finmap) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality) HB(structures) exp numfun lebesgue_measure lebesgue_integral reals ereal signed topology normedtype sequences esum measure exp numfun lebesgue_measure lebesgue_integral