proposition: Lemma monalgOverC c : (c%:MP \in monalgOver S) = (c \in S).
proof: Proof. by rewrite monalgOverU; case: eqP=> // ->; rewrite rpred0. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq path choice finset fintype finfun) mathcomp(tuple bigop ssralg ssrint ssrnum) xfinmap