摘要
用参数扰动的方法证明了平面Ｌｉｅｎａｒｄ系统局部极限环的存在性及其可以出现的个数，从而部分地回答了叶彦谦教授在专著［１］中的一个猜想。
By using parameter perturbation method, the existence and its maximum number of local limit cycles of lienard system in plane were obtained, and so a guess in of professor Ye Yanqian was partly proved.
出处
《山东矿业学院学报》
CAS
1999年第1期85-87,共3页
Journal of Shandong University of Science and Technology(Natural Science)
