摘要
本文讨论一类平面五次系统的全局结构,给出高次奇点的性质以及极限环存在的条件。
In this paper, we study a class of fifth systems with one finite singular point of twenty - fiveth order, and give some conditions of existence and nonexistence of the limit cycle.
出处
《潍坊学院学报》
2003年第4期17-19,共3页
Journal of Weifang University