机构地区: 中山医科大学
出 处: 《生物数学学报》 1997年第4期308-311,共4页
摘 要: 本文引入部分变元持久性的定义,借鉴稳定性理论的基本思想方法,讨论了Kolmogrov模型关于部分变元强持久的充要条件及永久共存的充分条件;并以此为工具,讨论了有界性与持久性的关系,得到了有界性的新判据. In this paper,the authors introduced the defines of partial variable differetial e-quation's permanment and permanment functions,discussed permanent and bound of partial vari-able differetial equation,obtained nessary and sufficient conditions of strong persistance and suffi-cient conditions of permanent.Appied those results,discussed the bound of Volterna model.