摘要
讨论了捕食种群具有密度制约的一类厌食系统．给出了此系统当存在正平衡点时的轨线的拓扑结构，并证明了此系统能且至多能存在一阶细焦点．
In this paper, we discussed a type anorexia system of predatory spencies with density dependence, gived topological structure of path curve when positive balance point exists in system, and proved that first order fine focus my be existed at most.
出处
《纯粹数学与应用数学》
CSCD
1999年第2期7-12,6,共7页
Pure and Applied Mathematics
基金
辽宁省自然科学基金
