摘要
利用重合度理论,获得了一类具有两个偏差变元的高阶中立型Lienard方程周期解的存在性和唯一性的充分条件,推广和改进了已有文献的相关结论.
In this paper, by employing continuation theorem of coincidence degree theory, some new sufficient condition of the existence and uniqueness of periodic solutions for a kind of high-order neutral Lienard equations with two deviating arguments are obtained. The results have extended and improved the related reports in the literatures.
出处
《数学的实践与认识》
CSCD
北大核心
2011年第11期140-149,共10页
Mathematics in Practice and Theory
关键词
高
阶中立型Lienard方程
偏差变元
周期解
重合度
high-order neutral Lienard equations
deviating argument
periodic solutions coincidence degree