proposition: Lemma ratR_lt0P a : reflect (0 < a) (0 < a)%R.
proof: Proof. exact: (ratR_ltP 0). Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div order) mathcomp(ssralg ssrnum ssrint rat intdiv) Coq(Morphisms Setoid) fourcolor(real realsyntax)