proposition: Lemma mx_of_scal_one: 1 == mx_of_scal (one A).
proof: Proof. intros; mx_intros i j Hi Hj. reflexivity. Qed.
imports: ATBR(Common) ATBR(Classes) ATBR(Graph) ATBR(Monoid) ATBR(SemiLattice) ATBR(SemiRing) ATBR(MxGraph) ATBR(MxSemiLattice) ATBR(BoolView)