proposition: Lemma size_poly_leq0 p : (size p <= 0) = (p == 0).
proof: Proof. by rewrite leqn0 size_poly_eq0. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype bigop finset tuple) mathcomp(div ssralg countalg binomial)