摘要
利用拓扑度理论讨论了一类具有脉冲的中立型单种群生态模型,得到了该系统的正周期解存在的充分条件.
In this paper, A class of impulsive neutral model of single-species population growth is considered. By using the coincidence theorem, the sufficient condition of the existence of its positive periodic solution is obtained.
出处
《数学研究》
CSCD
2005年第2期189-195,共7页
Journal of Mathematical Study
关键词
脉冲
中立型
正周期解
拓扑度
Impulse
Neutral type
the Positive Periodic Solution
Coincidence Degree
