proposition: Lemma Radon_Nikodym_integrable : nu `<< mu -> mu.-integrable [set: T] Radon_Nikodym.
proof: Proof. by move=> numu; rewrite (Radon_NikodymE numu); case: cid => ? []. Qed.
imports: mathcomp(all_ssreflect ssralg ssrnum ssrint interval) mathcomp(finmap fingroup perm rat) mathcomp(mathcomp_extra boolp classical_sets cardinality) mathcomp(functions fsbigop set_interval) HB(structures) reals ereal signed topology numfun normedtype sequences esum measure realfun lebesgue_measure lebesgue_integral