摘要
本文研究广义Ｌｉéｎａｒｄ系统ｘ¨＋［ｆ（ｘ）＋ｋ（ｘ）ｘ］ｘ＋ｇ（ｘ）＝０的中心问题，得到此系统具有局部中心的三个判据和具有全局中心的一个充要条件。
In this paper, the problem of center of the generalized Liénard system(E): is studied, three criteria which judge the origin for ( E) to have a local center and a sufficient and necessary condition which guarantees the origin for(E) to have a global center are given.
出处
《重庆建筑大学学报》
CSCD
1998年第1期36-43,共8页
Journal of Chongqing Jianzhu University
