proposition: Lemma cfRepr_signed (rho : reprS n d) : cfRepr (signed_repr rho) = sign_char * cfRepr rho.
proof: Proof. apply cfunP => /= s; rewrite /= !cfunE inE /= !mulr1n. by rewrite /signed_mx mxtraceZ. Qed.
imports: mathcomp(all_ssreflect) mathcomp(fingroup perm ssralg morphism perm action) mathcomp(zmodp) mathcomp(vector matrix mxalgebra ssrnum algC) mathcomp(mxrepresentation classfun character) permcomp tools partition congr cycles cycletype presentSn