摘要
研究1类具有2个零特征根和1个4n2+2n+1阶奇点的2n+1次系统,并给出了极限环存在与否的条件。
A class of (2 n + 1)th order differential system with one 4 n^ 2 + 2 n + 1 order singular point and two zero eigenvalues is studied, and some conditions of existence or nonexistence of the limit cycle are given.
出处
《中国海洋大学学报(自然科学版)》
CAS
CSCD
北大核心
2007年第5期834-836,共3页
Periodical of Ocean University of China
关键词
2n+1次系统
高阶奇点
极限环
细焦点
(2 n + 1) th system
higher order singular point
limit cycle
fine focus AMS Subject Classfication: 34C05