proposition: Lemma gdco_smithP m n (M : 'M[R]_(m,n)) : smith_spec M (gdco_smith M).
proof: Proof. rewrite /gdco_smith. by apply: smithmxnP; apply: kap_smithP; apply: gdco_kapP. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq path) mathcomp(ssralg fintype matrix mxalgebra bigop zmodp perm choice) dvdring mxstructure minor stronglydiscrete coherent edr