%0 Journal Article %T 一类带阻尼项的次二次二阶Hamilton系统的周期解<br>PERIODIC SOLUTIONS OF A CLASS OF SUBQUADRATIC SECOND ORDER HAMILTONIAN SYSTEMS WITH DAMPED VIBRATION %A 作者 %A 居加敏 %A 王智勇 %J 数学杂志 %D 2017 %X 本文研究了一类带阻尼项的二阶Hamilton系统周期解的存在性问题.利用鞍点定理,在新的次二次条件下,获得了一个新的存在性结果,推广并改进了已有文献的相关存在性结论.<br>In this paper,we study the problems about existence of periodic solutions for second-order Hamiltonian systems with damped vibration.Via saddle point theorem under a new subquadratic condition,an existence theorem is obtained,which extends and improves previously known results %K 周期解 二阶Hamilton系统 (C)条件 鞍点定理< %K br> %K periodic solutions second-order Hamiltonian systems (C)condition saddle point theorem %U http://sxzz.whu.edu.cn/sxzz/ch/reader/view_abstract.aspx?file_no=20170217&flag=1