proposition: Lemma oprob_gt0 p : 0 < oprob_to_real p.
proof: Proof. by case : p => p /= /andP []. Qed.
imports: mathcomp(all_ssreflect ssralg ssrnum) mathcomp(reals normedtype) mathcomp(mathcomp_extra boolp) mathcomp(lra ring Rstruct)