COMMON FIXED POINTS OF TWO NONEXPANSIVE MAPPINGS BY A MODIFIED FASTER ITERATION SCHEME

We introduce an iteration scheme for approximating common fixed points of two mappings. On one hand, it extends a scheme due to Agarwal et al. (2) to the case of two mappings while on the other hand, it is faster than both the Ishikawa type scheme and the one studied by Yao and Chen (18) for the purpose in some sense. Using this scheme, we prove some weak and strong convergence results for approximating common fixed points of two nonexpansive self mappings. We also outline the proofs of these results to the case of nonexpansive nonself mappings.

[1]  J. Kim,et al.  A New One-Step Iterative Process for Common Fixed Points in Banach Spaces , 2008 .

[2]  W. Kaczor Weak convergence of almost orbits of asymptotically nonexpansive commutative semigroups , 2002 .

[3]  Jürgen Schu,et al.  Iterative construction of fixed points of asymptotically nonexpansive mappings , 1991 .

[4]  Wataru Takahashi,et al.  APPROXIMATING COMMON FIXED POINTS OF TWO ASYMPTOTICALLY NONEXPANSIVE MAPPINGS , 2001 .

[5]  W. Kaczor,et al.  Asymptotical smoothness and its applications , 2002, Bulletin of the Australian Mathematical Society.

[6]  W. G. Dotson,et al.  Fixed points of quasi-nonexpansive mappings , 1972, Journal of the Australian Mathematical Society.

[7]  Gang Li,et al.  Demiclosedness principle and asymptotic behavior for nonexpansive mappings in metric spaces , 2001, Appl. Math. Lett..

[8]  Naseer Shahzad,et al.  Approximating fixed points of non-self nonexpansive mappings in Banach spaces , 2005 .

[9]  Safeer Hussain Khan,et al.  Weak and strong convergence of a scheme with errors for two nonexpansive mappings , 2005 .

[10]  J. Schu,et al.  Weak and strong convergence to fixed points of asymptotically nonexpansive mappings , 1991, Bulletin of the Australian Mathematical Society.

[11]  Safeer Hussain Khan,et al.  Convergence of iterates with errors of asymptotically quasi-nonexpansive mappings and applications , 2007 .

[12]  Ronald E. Bruck A simple proof of the mean ergodic theorem for nonlinear contractions in Banach spaces , 1979 .

[13]  Wataru Takahashi,et al.  APPROXIMATING FIXED POINTS OF NONEXPANSIVE MAPPINGS IN BANACH SPACES , 1998 .

[14]  F. Browder Nonlinear operators and nonlinear equations of evolution in Banach spaces , 1976 .

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

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