School of Mathematics and Quantitative Economics, Dongbei University of Finance and Economics, Dalian, Liaoning 116025, China
Copyright © 2009 Hongying Lu. 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.
A discrete nonlinear prey-competition system with m-preys and
(n-m)-predators and delays is considered. Two sets of sufficient conditions on the
permanence of the system are obtained. One set is delay independent, while
the other set is delay dependent.