摘要
本文在比较自然的条件下证明了一类周期摄动的Duffing系统的调和解的存在性。
An existence theorem for harmonic solutions of periodically perturbed systems of Duffing's type is proved in this paper under some reasonable conditions.
出处
《北京大学学报(自然科学版)》
CAS
CSCD
北大核心
1992年第1期71-76,共6页
Acta Scientiarum Naturalium Universitatis Pekinensis
关键词
周期摄动
Duffing系数
调和期
Existence theorem
Harmonic solutions
Periodic Duffing's system
Hessian matrix
Topological index