南京大学学报(数学半年刊)
南京大學學報(數學半年刊)
남경대학학보(수학반년간)
JOURNAL OF NANJING UNIVERSITY MATHEMATICAL BIQUARTERLY
2004年
2期
226-233
,共8页
Liěnard方程%周期解%有界性%Schauder不动点定理%存在性
Liěnard方程%週期解%有界性%Schauder不動點定理%存在性
Liěnard방정%주기해%유계성%Schauder불동점정리%존재성
Liénard equation%periodic solution%boundedness%Schauder's fixed point theorem%existence
对于受迫Liénard方程,利用Sobolev空间模估计,讨论了周期解的有界性,并给出了估计,进而利用变分原理,通过Schauder不动点定理,证明了周期解的存在性.
對于受迫Liénard方程,利用Sobolev空間模估計,討論瞭週期解的有界性,併給齣瞭估計,進而利用變分原理,通過Schauder不動點定理,證明瞭週期解的存在性.
대우수박Liénard방정,이용Sobolev공간모고계,토론료주기해적유계성,병급출료고계,진이이용변분원리,통과Schauder불동점정리,증명료주기해적존재성.
A forced Liénard equation is discussed in this paper. The boundedness of the periodic solution to the equation is proved, and the estimate of the solution is showed by using the norm estimate in Sobolev space, then by virtue of the variation principle and Schauder's fixed point theorem, the existence of the periodic solution is proved as well.