proposition: Lemma opred0 (S : bLatticeClosed T) : \bot \in S.
proof: Proof. exact: opred0. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)