摘要
研究了Liénard型系统x··+(f(x)+k(x)x·)x·+g(x)=0的极限环的唯一性与唯二性,得到了新的结果,推广和改进了一些已知的结论.
The uniqueness and two uniqueness of limit cycles of Liénand type system x··+ (f(x) +k(x)x·)x·+g(x)=0 are discussed.Some new results are given,and some known results are improved and extended.
出处
《广西师范大学学报(自然科学版)》
CAS
1997年第3期22-27,共6页
Journal of Guangxi Normal University:Natural Science Edition
关键词
极限环
唯一性
唯二性
林纳系统
Liénard type system
limit cycle
uniqueness
two uniqueness