Approximation of common fixed points of an infinite family of nonexpansive mappings in Banach spaces

Let C be a closed convex subset of a real uniformly smooth and strictly convex Banach space E. Consider the following iterative algorithm given by {x"0=x@?Carbitrarily chosen ,y"n=@b"nx"n+(1-@b"n)W"nx"n,x"n"+"1=@a"nf(x"n)+(1-@a"n)y"n,@?n>=0, where f is a contraction on C and W"n is a mapping generated by an infinite family of nonexpansive mappings {T"i}"i"="1^~. Assume that the set of common fixed points of this infinite family of nonexpansive mappings is not empty. In this paper, we prove that the sequence {x"n} generated by the above iterative algorithm converges strongly to a common fixed point of {T"i}"i"="1^~, which solves some variational inequality. Our results improve and extend the results announced by many others.

[1]  F. Browder,et al.  FIXED-POINT THEOREMS FOR NONCOMPACT MAPPINGS IN HILBERT SPACE. , 1965, Proceedings of the National Academy of Sciences of the United States of America.

[2]  Wataru Takahashi,et al.  Approximation of common fixed points of a countable family of nonexpansive mappings in a Banach space , 2007 .

[3]  W. Takahashi,et al.  STRONG CONVERGENCE TO COMMON FIXED POINTS OF INFINITE NONEXPANSIVE MAPPINGS AND APPLICATIONS , 2001 .

[4]  W. Takahashi,et al.  Strong convergence theorems for nonexpansive mappings and nonexpansive semigroups , 2003 .

[5]  Heinz H. Bauschke The Approximation of Fixed Points of Compositions of Nonexpansive Mappings in Hilbert Space , 1996 .

[6]  P. L. Combettes,et al.  Foundation of set theoretic estimation , 1993 .

[7]  Hong-Kun Xu An Iterative Approach to Quadratic Optimization , 2003 .

[8]  Jen-Chih Yao,et al.  Convergence Theorem for Equilibrium Problems and Fixed Point Problems of Infinite Family of Nonexpansive Mappings , 2007 .

[9]  K. A. Stewart,et al.  Image Recovery¿Theory and Applications , 1987 .

[10]  Ronald E. Bruck Nonexpansive projections on subsets of Banach spaces. , 1973 .

[11]  Hong-Kun Xu,et al.  AN IMPLICIT ITERATION PROCESS FOR NONEXPANSIVE MAPPINGS , 2001 .

[12]  Tomonari Suzuki Strong convergence of Krasnoselskii and Mann's type sequences for one-parameter nonexpansive semigroups without Bochner integrals , 2005 .

[13]  Yongfu Su,et al.  Approximation of a zero point of accretive operator in Banach spaces , 2007 .

[14]  J. Lindenstrauss,et al.  An example concerning fixed points , 1975 .

[15]  Alvaro R. De Pierro,et al.  On the convergence of Han's method for convex programming with quadratic objective , 1991, Math. Program..

[16]  Patrick L. Combettes,et al.  The foundations of set theoretic estimation , 1991, [Proceedings] ICASSP 91: 1991 International Conference on Acoustics, Speech, and Signal Processing.

[17]  Meijuan Shang,et al.  Strong Convergence Theorems for a Finite Family of Nonexpansive Mappings , 2007 .

[18]  Simeon Reich,et al.  Asymptotic behavior of contractions in Banach spaces , 1973 .

[19]  Jen-Chih Yao,et al.  Strong convergence and certain control conditions for modified Mann iteration , 2008 .

[20]  W. R. Mann,et al.  Mean value methods in iteration , 1953 .

[21]  P. L. Combettes The foundations of set theoretic estimation , 1993 .

[22]  Hong-Kun Xu,et al.  Strong convergence of modified Mann iterations , 2005 .

[23]  S. Reich Weak convergence theorems for nonexpansive mappings in Banach spaces , 1979 .

[24]  Hong-Kun Xu VISCOSITY APPROXIMATION METHODS FOR NONEXPANSIVE MAPPINGS , 2004 .

[25]  S. Reich Strong convergence theorems for resolvents of accretive operators in Banach spaces , 1980 .

[26]  Heinz H. Bauschke,et al.  On Projection Algorithms for Solving Convex Feasibility Problems , 1996, SIAM Rev..

[27]  Naseer Shahzad,et al.  Strong convergence of an implicit iteration process for a finite family of nonexpansive mappings , 2005 .