EFFECTS OF CONSTRAINTS ON LIE SYMMETRIES AND CONSERVED QUANTITIES OF A BIRKHOFF SYSTEM

• 来源期刊: 中国物理(英文版)
• 学科: 物理学
• 关键词: Birkhoff system Lie symmetry conserved quantity constraint
• 年，卷（期）: 2001,（1）
• 页码范围: 12-16
• 页数: 5页
• 分类号: O4
• 语种: 英文

摘要

After a Birkhoff system is restricted by constraints, the determining equations, the Lie symmetries, the structure equation and the form of conserved quantities corresponding to the Lie symmetries will change. Some Lie symmetries will disappear and under certain conditions some Lie symmetries will still remain present. The condition under which Lie symmetries and conserved quantities of the system will remain is given.