proposition: Lemma integrable0 : mu_int (cst 0).
proof: Proof. apply/integrableP; split=> //; under eq_integral do rewrite (gee0_abs (lexx 0)). by rewrite integral0. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrnum ssrint interval finmap) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality fsbigop ) signed reals ereal topology normedtype sequences real_interval esum measure lebesgue_measure numfun