Positive Periodic Solutions of Nicholson-Type Delay Systemswith Nonlinear Density-Dependent Mortality Terms

[摘要] This paper is concerned with the periodic solutions for a class of Nicholson-type delay systems with nonlinear density-dependent mortality terms. By using coincidence degree theory, some criteria are obtained to guarantee the existence of positive periodic solutions of the model. Moreover, an example and a numerical simulation are given to illustrate our main results.

[发布日期] 2012-12-11