proposition: Lemma modzNm m d : (- (m %% d)%Z = - m %[mod d])%Z.
proof: Proof. by rewrite -mulN1r modzMmr mulN1r. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq path) mathcomp(div choice fintype tuple finfun bigop prime order) mathcomp(ssralg poly ssrnum ssrint archimedean rat matrix) mathcomp(polydiv perm zmodp mxalgebra vector)