proposition: Lemma msupp_eq0 p : (msupp p == [::]) = (p == 0).
proof: Proof. case: p=> p /=; rewrite msuppE /GRing.zero /= /mpolyC. by rewrite dom_eq0 freegU0 /=. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(choice fintype tuple finfun bigop finset binomial) mathcomp(order fingroup perm ssralg zmodp poly ssrint) mathcomp(matrix vector) mathcomp(bigenough) ssrcomplements freeg