proposition: Lemma neq0zcoeff (k : nat) (p : 'P_k) : 'z_p != 0.
proof: Proof. Proof using. by rewrite zcoeffE pnatr_eq0 neq0zcard. 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