摘要
利用重合度理论,研究了含复杂偏差变元的Liénard型方程的周期解问题,得到了存在周期解的改进结果.由于这个结果与偏差变元的上界有关,因此具有很好的应用前景.
By applying coincidence degree theory, this paper studies the existence of periodic solutions to Liénard differential equation which has one complicated deviating argument. An improved conclusion has been obtained. Since this conclusion is related to the upper bounds of deviating argument, it has good practical prospects.
出处
《安徽师范大学学报（自然科学版）》
CAS
2006年第4期315-319,共5页
Journal of Anhui Normal University(Natural Science)
基金
安徽省自然科学基金(050460103)
安徽省教育厅自然科学基金重点项目(2005kj031zd)
关键词
偏差变元
周期解
重合度理论
deviating argument
periodic solution
coincidence degree theory
