Academic Editor: W. A. Kirk
Copyright © 2010 Mohamed A. Khamsi. 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.
We discuss the newly introduced concept of cone metric spaces. We
also discuss the fixed point existence results of contractive mappings defined on
such metric spaces. In particular, we show that most of the new results are merely
copies of the classical ones.