proposition: Lemma real_comparable x y : x \is real -> y \is real -> x >=< y.
proof: Proof. exact: real_leVge. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(ssrAC div fintype path bigop order finset fingroup) mathcomp(ssralg poly)