Academic Editor: Charles E. Chidume
Copyright © 2009 Nawab Hussain and Yeol Je Cho. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The existence of common fixed points is established for the
mappings, where is -weak contraction on a nonempty subset of a
Banach space. As application, some results on the invariant best approximation are proved. Our results unify and substantially improve several recent results given by some authors.