proposition: Lemma leBSide x y (b b' : bool) : BSide b x <= BSide b' y = (x < y ?<= if b' ==> b).
proof: Proof. by []. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(div fintype bigop order ssralg finset fingroup) mathcomp(ssrnum)