Closed orbits and limit cycles of second-order autonomous Birkhoff systems

• 来源期刊: 中国物理（英文版）
• 关键词: Birkhoff system equation of motion singular point closed orbit limit cycle
• 年，卷（期）: 2003,（6）
• 页码范围: 586-589
• 页数: 4页
• 语种: 英文

摘要

In this paper,the existence of periodic orbits and the non-existence of limit cycles for the second-order autonomous Birkhoff system are studied.Further the existence of algebraic limit cycles for a generalized second-order autonomous Birkhoff system is studied.