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STRONG CONVERGENCE THEOREMS FOR NONEXPANSIVE MAPPINGS AND INVERSE-STRONGLY-MONOTONE MAPPINGS IN A BANACH SPACE

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In this paper, we introduce a new iterative sequence for finding a common element of the set of fixed points of a nonexpansive mapping and the set of solutions of the variational inequality for an inverse-strongly-monotone mapping in a Banach space. Then we show that the sequence converges strongly to a common element of two sets. Using this result, we consider the problem of finding a common element of the set of fixed points of a nonexpansive mapping and the set of zeros of an inverse-strongly-monotone mapping, the fixed point problem and the classical variational inequality problem. Our results improve and extend the corresponding results announced by many others.

Abstract

In this paper, we introduce a new iterative sequence for finding a common element of the set of fixed points of a nonexpansive mapping and the set of solutions of the variational inequality for an inverse-strongly-monotone mapping in a Banach space. Then we show that the sequence converges strongly to a common element of two sets. Using this result, we consider the problem of finding a common element of the set of fixed points of a nonexpansive mapping and the set of zeros of an inverse-strongly-monotone mapping, the fixed point problem and the classical variational inequality problem. Our results improve and extend the corresponding results announced by many others.

참고문헌 (13)

  1. Ya. I. Alber, "Metric and generalized projection operators in Banach spaces: Properties and applications. in: Theory and Applications of Nonlinear Op-erators of Accretive and Monotone Type", Lecture Notes Pure Appl. Math., 178, pp.15~50 (1996), Dekker
  2. Ya. I. Alber, "An iterative method for solving a class of nonlinear operator equations in Banach spaces", Panamer. Math. J., 4, pp.39~54 (1994)
  3. K. Ball, "Sharp uniform convexity and smoothness inequal-ities for trace norms", Invent. Math., 115, pp.463~482 (1994)
  4. F. E. Browder, "Construction of xed points of nonlinear mappings in Hilbert space", J. Math. Anal. Appl., 20, pp.197~228 (1967)
  5. H. Iiduka, "Strong convergence theorems for nonexpansive mappings and inverse-strongly monotone mappings", Nonlinear Analysis, 61, pp.341~350 (2005)
  6. H. Iiduka, "Weak convergence of a projection algorithm for variational inequalities in a Banach space", J. Math. Anal. Appl., 339, pp.668~679 (2008)
  7. H. Iiduka, "Approximation of solutions of variational inequalities for monotone mappings", Panamer. Math. J., 14, pp.49~61 (2004)
  8. J. L. Lions, "Variational inequalities", Comm. Pure Appl. Math., 20, pp.493~517 (1967)
  9. F. Liu, "Regularization of nonlinear ill-posed variational inequalities and convergence rates", Set-Valued Anal., 6, pp.313~344 (1998)
  10. S. Matsushita, "Approximating xed points of nonexpansive mappings in a Banach space by metric projections", Applied Mathematics and Computation, 196, pp.422~425 (2008)
  11. S. Matsushita, "A strong convergence theorem for relatively nonex-pansive mappings in a Banach space", Journal of Approximation Theory, 134, pp.257~266 (2005)
  12. R. T. Rockafellar, "On the maximality of sums of nonlinear monotone operators", Trans. Amer. Math. Soc., 149, pp.75~88 (1970)
  13. Y. Takahashi, "On sharp uniform convexity, smoothness, and strong type, cotype inequalities", J. Nonlinear Convex Anal., 3, pp.267~281 (2002)

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