A symmetry and a conserved quantity for the Birkhoff system

• 来源期刊: 中国物理（英文版）
• 关键词: Birkhoff system symmetry conserved quantity
• 年，卷（期）: 2006,（8）
• 页码范围: 1678-1681
• 页数: 4页
• 语种: 英文

摘要

A symmetry and a conserved quantity of the Birkhoff system are studied.The symmetry is called the Birkhoff symmetry.Its definition and criterion are given in this paper.A conserved quantity can be deduced by using the symmetry.An example is given to illustrate the application of the result.