摘要
将鞍点归约方法应用于非自治二阶系统,得到了非自治二阶系统在次线性增长条件下的周期解的存在性定理.
Existence of periodic solutions is obtained by using the saddle reduction methods for the non-autonomous second systems under the condition of sub-linear growth.
出处
《韶关学院学报》
2007年第6期23-25,共3页
Journal of Shaoguan University
关键词
周期解
非自治二阶系统
鞍点归约
临界点
强制
periodic solutions
the non-autonomous second systems
the saddle reduction methods
critic point
coercive
