Advances in Difference Equations
Volume 2010 (2010), Article ID 249364, 9 pages
doi:10.1155/2010/249364
Research Article

Note on the Persistent Property of a Discrete Lotka-Volterra Competitive System with Delays and Feedback Controls

Xiangzeng Kong,1,2 Liping Chen,1,2 and Wensheng Yang1,2

1Key Lab of Network Security and Cryptology, Fujian Normal University, Fuzhou 350007, China
2School of Mathematics and Computer Science, Fujian Normal University, Fuzhou 350007, China

Received 26 June 2010; Accepted 12 September 2010

Academic Editor: P. J. Y. Wong

Copyright © 2010 Xiangzeng Kong 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

A nonautonomous N-species discrete Lotka-Volterra competitive system with delays and feedback controls is considered in this work. Sufficient conditions on the coefficients are given to guarantee that all the species are permanent. It is shown that these conditions are weaker than those of Liao et al. 2008.