proposition: Lemma jcPr_gt0 E F : 0 < \Pr_[E | F] <-> \Pr_[E | F] != 0.
proof: Proof. by rewrite !jcPrE; apply cPr_gt0. Qed.
imports: mathcomp(all_ssreflect ssralg matrix) mathcomp(Rstruct) Reals ssrR realType_ext Reals_ext logb ssr_ext ssralg_ext bigop_ext fdist proba