proposition: Lemma cfextprodZr g a h : g \ox (a *: h) = a *: (g \ox h).
proof: Proof. Proof using. by rewrite linearZ. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(ssralg fingroup morphism perm gproduct) mathcomp(ssrnum matrix vector mxalgebra algC) mathcomp(classfun character mxrepresentation) tools ordcast partition sorted permcomp cycles cycletype permcent