摘要
研究了一类具有无限时滞和扩散项的非自治竞争系统,利用重合度的廷拓定理,得到了该系统正周期解存在的充分性条件.
By using the continuation theorem of coincidence degree theory, the existence of positive periodic solutions for a kind of nonautonomous competitive system with infinite delay and diffusion is studied. The sufficient conditions are obtained for the existence of positive periodic solutions of the system.
出处
《生物数学学报》
CSCD
2012年第2期193-202,共10页
Journal of Biomathematics
基金
National Natural Science Foundation of China(10726062)
Natural Science Foundation of Fujian Province of China(2010J01005)
Science and Technology Development Foundation of Fuzhou University(2010-XQ-24)
关键词
周期解
无限时滞
扩散
重合度
Periodic solutions
Infinite delay
Diffusion
Coincidence degree
