proposition: Lemma sfinite : sfinite_measure mu.
proof: Proof. by apply: sfinite_measure_sigma_finite; exact: sigma_finiteT. Qed.
imports: mathcomp(all_ssreflect all_algebra finmap) mathcomp(mathcomp_extra boolp classical_sets functions) mathcomp(cardinality fsbigop ) reals ereal signed topology normedtype sequences esum numfun HB(structures)