摘要
本文利用比较方法研究了广义Liénard方程广义Liénard问题,给出了一个定理及三个推论,定理的条件相对比较弱,结果也比较实用。篇末文献中的相应结果可由推论导出。
In this paper we study the problem of the local center of the Generalized Liénard system, and give a theorem and three corollaries. The conditions of the theorem is weaken and two results are practical. The relative results of the references can be deduced by the corollaries.
出处
《青岛大学学报（自然科学版）》
CAS
2001年第3期9-15,共7页
Journal of Qingdao University(Natural Science Edition)
