proposition: Lemma ltR02 : (0 : R) < 2.
proof: Proof. exact: ltR_trans ltR01 (ltRS 1). Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div order) mathcomp(ssralg ssrnum ssrint rat intdiv) Coq(Morphisms Setoid) fourcolor(real realsyntax)