fact: Definition mx_one n: MX n n := box n n (fun i j => if eq_nat_bool i j then 1 else 0).
imports: ATBR(Common) ATBR(Classes) ATBR(Graph) ATBR(Monoid) ATBR(SemiLattice) ATBR(SemiRing) ATBR(MxGraph) ATBR(MxSemiLattice) ATBR(BoolView)