APPROXIMATION OF COMMON FIXED POINTS OF FAMILIES OF NONEXPANSIVE MAPPINGS

Let $X$ be a reflexive and smooth Banach space which has a weakly sequentially continuous duality mapping. We consider in this paper the iteration scheme $x_{n+1}=\lambda_{n+1}y+(1-\lambda_{n+1})T_{n+1}x_n$ for infinitely many nonexpansive maps $T_1,T_2,T_3,...$ in $X$ as well as for finitely many nonexpansive retraction. We establish several strong convergence results which generalize [10, Theorem 3.3] and [10, Theorem 4.1] from Hilbert space setting to Banach space setting.

[1]  S. Stević APPROXIMATING FIXED POINTS OF NONEXPANSIVE MAPPINGS , 2006 .

[2]  P. Lions Approximation de Points Fixes de Contractions , 1977 .

[3]  Simeon Reich,et al.  Product formulas, nonlinear semigroups, and accretive operators , 1980 .

[4]  Wataru Takahashi,et al.  Strong convergence of approximated sequences for nonexpansive mappings in Banach spaces , 1997 .

[5]  Z. Opial Weak convergence of the sequence of successive approximations for nonexpansive mappings , 1967 .

[6]  Zongben Xu,et al.  Characteristic inequalities of uniformly convex and uniformly smooth Banach spaces , 1991 .

[7]  I. Yamada,et al.  Minimizing certain convex functions over the intersection of the fixed point sets of nonexpansive mappings , 1998 .

[8]  Abdul Latif,et al.  Fixed points of nonexpansive type multivalued maps , 1987 .

[9]  Wataru Takahashi,et al.  STRONG CONVERGENCE THEOREMS FOR CONTINUOUS SEMIGROUPS IN BANACH SPACES , 1999 .

[10]  S Rich SOME PROBLEMS AND RESULTS IN FIXED POINT THEORY , 1983 .

[11]  D. Dulst Equivalent Norms and the Fixed Point Property for Nonexpansive Mappings , 1982 .

[12]  Hong-Kun Xu,et al.  Convergence of Hybrid Steepest-Descent Methods for Variational Inequalities , 2003 .

[13]  I. Ciorǎnescu Geometry of banach spaces, duality mappings, and nonlinear problems , 1990 .

[14]  K. Deimling Nonlinear functional analysis , 1985 .

[15]  Jean-Pierre Gossez,et al.  Some geometric properties related to the fixed point theory for nonexpansive mappings. , 1972 .

[16]  Wataru Takahashi,et al.  Strong Convergence to Common Fixed Points of Families of Nonexpansive Mappings , 1997 .

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

[18]  Wataru Takahashi,et al.  Convergence of approximated sequences for nonexpansive mappings , 1997 .

[19]  W. G. Dotson,et al.  Approximating fixed points of nonexpansive mappings , 1974 .

[20]  Hong-Kun Xu,et al.  Fixed point theorems for asymptotically nonexpansive mappings , 1994 .

[21]  R. Wittmann Approximation of fixed points of nonexpansive mappings , 1992 .

[22]  S. Reich,et al.  Uniform Convexity, Hyperbolic Geometry, and Nonexpansive Mappings , 1984 .

[23]  Paranjothi Pillay,et al.  Iterative approaches to finding nearest common fixed points of nonexpansive mappings in Hilbert spaces , 2003 .

[24]  F. Browder Convergence theorems for sequences of nonlinear operators in Banach spaces , 1967 .

[25]  Jarosław Górnicki,et al.  Weak convergence theorems for asymptotically nonexpansive mappings in uniformly convex Banach spaces , 1989 .

[26]  I. Yamada,et al.  Quadratic optimization of fixed points of nonexpansive mappings in Hilbert space , 1998 .

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