proposition: Lemma dot_scal_right_one n m (M: MX n m): M *' 1 == M.
proof: Proof. repeat intro; simpl. trivial with algebra. Qed.
imports: ATBR(Common) ATBR(Classes) ATBR(Graph) ATBR(Monoid) ATBR(SemiLattice) ATBR(SemiRing) ATBR(MxGraph) ATBR(MxSemiLattice) ATBR(BoolView)