数学物理学报

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一类具时滞的Liénard型方程的周期解

刘炳文;黄立宏   

  1. 嘉兴学院数学与信息科学学院 嘉兴 314001
  • 收稿日期:2004-07-07 修回日期:2005-05-10
  • 通讯作者: 刘炳文
  • 基金资助:
    国家自然科学基金(10371034)、国家教育部博士基金(20010532002)资助

eriodic Solutions for a Liénard-type
Equation with Delays

Liu Bingwen;Huang Lihong   

  1. College of Mathematics and Information Science, Jiaxing University, Jiaxing 314001
  • Received:2004-07-07 Revised:2005-05-10
  • Contact: Liu Bingwen

摘要:

利用重合度理论研究了一类具时滞的Liénard型 方程
x''+f_1(x)|x'|^2+f_2(t,x(t),x(t-\delta(t)))x'+g(t,x(t-\tau(t)))=p(t).

获得了该方程存在T-周期解的若干新结论, 改进推广了有关文献中的已有结果.

关键词: Liénard型方程, 时滞, 周期解, 拓扑度.

Abstract: By using the coincidence degreetheory, new results on the existence of T-periodic solutions for the Lié nard-type equation with delays
x''+f_1(x)|x'|^2+f_2(t,x(t),x(t-\delta(t))) x'+g(t,x(t-\tau(t)))=p(t)
are obtained, which improve and extend some existing ones in the literature.

Key words: Liénard-type equation, Delays, Periodic solution, Coincidence degree

中图分类号: 

  • 34C25