摘要
研究了一类带阻尼项的二阶系统的变分法,并利用鞍点定理获得了一个新的存在性结果,推广了已有文献的相关存在性结论.
We study the variational methods for a class of second Order systems withdamped vibration. Via saddle point theorem,an existence theorem is obtained, which extendspreviously known results.
出处
《数学的实践与认识》
北大核心
2017年第11期220-225,共6页
Mathematics in Practice and Theory
关键词
周期解
鞍点定理
二阶系统
变分法
periodic solutions
saddle point theorem
second-order systems
variantionalmethod
