tailieunhanh - Báo cáo hóa học: " Regularization of ill-posed mixed variational inequalities with non-monotone perturbations"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Regularization of ill-posed mixed variational inequalities with non-monotone perturbations | Thuy Journal of Inequalities and Applications 2011 2011 25 http content 2011 1 25 RESEARCH Journal of Inequalities and Applications a SpringerOpen Journal Open Access Regularization of ill-posed mixed variational inequalities with non-monotone perturbations Nguyen TT Thuy Correspondence thuychip04@ College of Sciences Thainguyen University Thainguyen Vietnam Abstract In this paper we study a regularization method for ill-posed mixed variational inequalities with non-monotone perturbations in Banach spaces. The convergence and convergence rates of regularized solutions are established by using a priori and a posteriori regularization parameter choice that is based upon the generalized discrepancy principle. Keywords monotone mixed variational inequality non-monotone perturbations regularization convergence rate 1 Introduction Variational inequality problems in finite-dimensional and infinite-dimensional spaces appear in many fields of applied mathematics such as convex programming nonlinear equations equilibrium models in economics and engineering see 1-3 . Therefore methods for solving variational inequalities and related problems have wide applicability. In this paper we consider the mixed variational inequality for a given f e X find an element x0 e X such that Ax0 f x x0 p x p x0 0 Vx e X 1 where A X X is a monotone-bounded hemicontinuous operator with domain D A X ộ X R is a proper convex lower semicontinuous functional and X is a real reflexive Banach space with its dual space X . For the sake of simplicity the norms of X and X are denoted by the same symbol . We write x x instead of x x for x e X and x e X. By S0 we denote the solution set of the problem 1 . It is easy to see that S0 is closed and convex whenever it is not empty. For the existence of a solution to 1 we have the following well-known result see 4 Theorem . If there exists u e dom Ộ satisfying the coercive condition Ax x u p x lim .

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