摘要
利用后继映射和推广的Poincare-Birkhoff扭转定理,证明了一类强不对称Duffing方程存在无穷多个次调和解.
Based on the successor map and a generalized version of the Poincare-Birkhoff twist theorem, we establish the existence of infinitely many subharmonics for a class of strongly asymmetric Duffing equations.
出处
《苏州大学学报(自然科学版)》
CAS
2005年第2期1-6,30,共7页
Journal of Soochow University(Natural Science Edition)
基金
江苏省教育厅自然科学基金资助项目(02KJB110003)
关键词
DUFFING方程
次调和解
不对称
扭转定理
无穷多
映射
subharmonics
strongly asymmetric Duffing equations
successor map
Poincare-Birkhoff twist theorem