proposition: Lemma ler_pr_and A B mu : \P_[mu] [predI A & B] <= \P_[mu] A + \P_[mu] B.
proof: Proof. by rewrite pr_and lerBlDr lerDl ge0_pr. Qed.
imports: mathcomp(all_ssreflect all_algebra) mathcomp.classical(boolp classical_sets mathcomp_extra) xfinmap ereal reals discrete topology realseq realsum