proposition: Lemma size_mk_monic_gt0 : (0 < size (mk_monic h))%N.
proof: Proof. by rewrite (leq_trans _ size_mk_monic_gt1). Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice fintype tuple) mathcomp(bigop binomial finset finfun ssralg countalg finalg poly polydiv) mathcomp(perm fingroup matrix mxalgebra mxpoly vector countalg)