摘要
研究了一类广义 Liénard系统dxdt=p(y) -F(x) , dydt=-g(x) (E)解的有界性 .首先获得了系统 (E)存在无界解的两个新的充分条件 ,然后获得系统 (E)所有解正向有界的若干充分条件和充要条件 ,所获结果改进和扩展了文 [1 -2 ]中的相应结果 .
This paper deals with the boundedness of solution of the following Liénard system dxdt=P(y)-F(x), dydt=-g(x). (E) We first obtain two sufficient conditions for the boundedness of an solution of system (E). The some sufficient conditions, as well as some necessary and sufficient conditions for the boundedness of this system are given. The results of papers are extended and improved.
出处
《工科数学》
2002年第5期23-28,共6页
Journal of Mathematics For Technology
基金
湖南省教育厅科研基金资助项目 (0 0 C2 99)