International Journal of Differential Equations
Volume 2011 (2011), Article ID 871693, 9 pages
http://dx.doi.org/10.1155/2011/871693
Research Article

Existence of Positive Periodic Solutions for a Class of 𝑛 -Species Competition Systems with Impulses

Peilian Guo and Yansheng Liu

Department of Mathematics, Shandong Normal University, Jinan 250014, China

Received 20 May 2011; Accepted 11 July 2011

Academic Editor: Khalil Ezzinbi

Copyright © 2011 Peilian Guo and Yansheng Liu. 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

By using the fixed point theorem on cone, some sufficient conditions are obtained on the existence of positive periodic solutions for a class of 𝑛 -species competition systems with impulses. Meanwhile, we point out that the conclusion of (Yan, 2009) is incorrect.