proposition: Lemma maxrowsub_full : row_full (rowsub mxf A).
proof: Proof. by rewrite /row_full eq_maxrowsub. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice) mathcomp(fintype finfun bigop finset fingroup perm order) mathcomp(div prime binomial ssralg finalg zmodp matrix)