nonconvex wiener-hopf equations and variational inequalities

We consider the problem of solving the nonconvex wiener-hopf equationson the prox-regular sets. using the projection technique, we show that thenonconvex wiener-hopf equations are equivalent to the strongly nonlinear nonconvexvariational inequalities. this equivalence is used to suggest several iterativemethods for solving the strongly nonlinear nonconvex variational inequalities.we also discuss the convergence of these new iterative methods under suitable conditions. several special cases are also considered.