摘要
本文研究一个带有时滞的竞争模型的一致持续生存。首先证明了离散时滞不影响种群的一致持续生存,接着在种群增长率是周期的假设下讨论了正周期解的存在性,最后给出了连续时滞模型一致持续生存的充分条件。
This paper studies the competition models with time delays. First, authors show that the system with a finite number of discrete delays is Uniformly persistent whatever the size of the delays. Secondly, authors discuss the existence of positive periodic solutions.under the assumption of the periodic growth rates. Finally,authors give sufficient conditions for uniform persistence of the system with distributed delays.
出处
《生物数学学报》
CSCD
北大核心
1991年第2期164-169,共6页
Journal of Biomathematics
基金
西南师范大学青年基金
