Supersymmetry on Lattice Using Ginsparg-Wilson Relation
  The Ginsparg-Wilson(G-W) relation for chiral symmetry is extended for a supersymmetrical(SUSY) case on a lattice.   It is possible to define exact lattice supersymmetry which are devided into two different cases according to using difference operators.   $U(1)_R$ symmetry on the lattice is also realized as one of exact symmetries. For an application, the extended G-W relation is given for a two-dimensional model with chiral multiplets. 
Hiroto. So, Naoya Ukita