Discrete Dynamics in Nature and Society
Volume 2011 (2011), Article ID 870164, 7 pages
http://dx.doi.org/10.1155/2011/870164
Research Article

Existence of Periodic Positive Solutions for Abstract Difference Equations

Shugui Kang, Yaqiong Cui, and Jianmin Guo

Institute of Applied Mathematics, Shanxi Datong University Datong, Shanxi 037009, China

Received 30 April 2011; Accepted 9 June 2011

Academic Editor: M. De la Sen

Copyright © 2011 Shugui Kang et al. 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.

Abstract

We will consider the existence of multiple positive periodic solutions for a class of abstract difference equations by using the well-known fixed point theorem (due to Krasnoselskii).