Gorenstein Category With Respect To Twin Cotorsion Pair

The thesis mainly study Gorenstein category with respect to twin cotorsion pair,denoted by(?)(S).Conditions for(?)(S)to be closed under extension and cokernel are given.Moreover,some equivalent description for Ding-projective modules are provided,and the Ding-projective modules are provided,and the Ding-projective dimension in Mod(R[t]/(tn))is discussed as well.