proposition: Lemma formNr u v : '[u, - v] = - '[u, v].
proof: Proof. by rewrite -scaleN1r formZr rmorphN1 mulN1r. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg fingroup zmodp poly ssrnum) mathcomp(matrix mxalgebra vector falgebra ssrnum algC algnum) mathcomp(fieldext) mathcomp(vector)