摘要
研究了一类具有多个变量时滞的n种群互惠系统,通过应用重合度理论,得出了其存在周期正解的条件。
In this paper, an n-species facultative mutualism system with multiple time-delays is studied. By using the coincidence degree theory, we obtain the conditions under which a positive periodic solution to the system can exist.
出处
《黄山学院学报》
2008年第3期4-7,共4页
Journal of Huangshan University
关键词
时滞
互惠系统
重合度
周期正解
time-delay
facuhative mutualism system
coincidence degree
positive periodic solution
