proposition: Lemma size_rs_gen : size \gen_(a, d) = d.+1.
proof: Proof. by rewrite size_prod_XsubC size_iota subn1 prednK. 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