proposition: Lemma rstabs_rowval_gen m (U : 'M_(m, nA)) : rstabs rG (rowval_gen U) = rstabs rGA U.
proof: Proof. apply/setP=> x /[!inE]; case Gx: (x \in G) => //=. by rewrite submx_rowval_gen in_genJ // (eqmxMr _ (rowval_genK U)). Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq path) mathcomp(div choice fintype tuple finfun bigop prime) mathcomp(ssralg poly polydiv finset fingroup morphism) mathcomp(perm automorphism quotient finalg action zmodp) mathcomp(commutator cyclic center pgroup matrix mxalgebra) mathcomp(mxpoly)