proposition: Lemma gen_neq0 : \gen_(a, d) != 0.
proof: Proof. by rewrite -size_poly_gt0 size_rs_gen. Qed.
imports: mathcomp(all_ssreflect ssralg finalg poly polydiv cyclic) mathcomp(perm matrix mxpoly vector mxalgebra zmodp) ssr_ext ssralg_ext poly_ext channel_code decoding linearcode hamming dft poly_decoding euclid grs cyclic_code