%0 Journal Article %T SUFFICIENT OPTIMALITY CONDITIONS FOR THE MOREAU-YOSIDA TYPE REGULARIZATION CONCEPT APPLIED TO SEMILINEAR ELLIPTIC OPTIMAL CONTROL PROBLEMS WITH POINTWISE STATE CONSTRAINTS %A Klaus Krumbiegel %A Ira Neitzel %A Arnd R£¿sch %J Mathematics and its Applications : Annals of the Academy of Romanian Scientists %D 2011 %I Academy of Romanian Scientists Publishing House %X We develop sufficient optimality conditions for a Moreau-Yosidaregularized optimal control problem governed by a semilinear ellipticPDE with pointwise constraints on the state and the control. We makeuse of the equivalence of a setting of Moreau-Yosida regularization to a special setting of the virtual control concept,for which standard second order sufficient conditions have been shown. Moreover, we present a numerical example,solving a Moreau-Yosida regularized model problem with an SQP method. %K Optimal control %K semilinear elliptic equation %K state constraints %K regularization %K Moreau-Yosida approximation %K virtual control %K sufficient optimality conditions %U http://www.mathematics-and-its-applications.com/preview/january2011/data/5_krumbiegel.pdf