On the Limit Cycles of Quadratic Differential Systems

被引：0
|
作者：
Xiang ZHANG Department of Mathematics
机构：
来源：
Acta Mathematica Sinica,English Series | 2002年 / 18卷 / 04期
关键词：
Quadratic differential system; Limit cycle; Ergodicity;
D O I：
暂无
中图分类号：
O175 [微分方程、积分方程];
学科分类号：
070104 ;
摘要：
In this paper we give the necessary and sufficient conditions for all finite critical points ofquadratic differential systems to be weak foci, and solve an open problem proposed by Yanqian Ye.
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页码：803 / 816
页数：14
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