On the solution of bounded and unbounded mixed complementarity problems

Abstract
A reformulation of the bounded mixed complementarity problem is introduced. It is proved that the level sets of the objective function are bounded and, under reasonableassumptions, stationary points coincide with solutions of the original variationalinequality problem. Therefore, standard minimization algorithms applied to the new reformulation must succeed. This result is applied to the compactification of unboundedmixed complementarity problems