摘要
本文讨论了在条件 0 <l<12 ,n <0下 ,(Ⅲ ) m =0 型二次系统的极限环问题 。
Continuing the study in paper [1], the limit cycle problem for the quadratic system (Ⅲ)_(m=0) is discussed in this paper for the case 0<l<12, n<0, and we prove that the system has at most one limit cycle under certain conditions.
出处
《南京师大学报（自然科学版）》
CAS
CSCD
2004年第4期15-18,共4页
Journal of Nanjing Normal University(Natural Science Edition)
基金
SupportedbytheNationalNaturalScienceFoundationofChina ( 198710 41)
关键词
二次系统
极限环
细焦点
Quadratic system, Limit cycle, Uniqueness
