摘要
主要研究了一类竞争 Lotka-Volterra 系统。该系统具有周期系数和周期时滞,利用 Mawhin 重 合度理论我们得到了该系统周期解存在性的充分条件,推广了相应的结果。
In this paper, a competition Lotka-Volterra model is studied. The model incorporates periodic coe?cients and time delays. Su?cient conditions are determined that guarantee the existence of a positive periodic solution. Some earlier results are extended and improved.
出处
《工程数学学报》
CSCD
北大核心
2004年第6期895-899,共5页
Chinese Journal of Engineering Mathematics
关键词
全局存在性
周期解
竞争系统
时滞
global existence
periodic solution
competition system
time delays
