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研究广义Birkhoff系统的积分不变量.给出系统存在积分不变量的条件,在此条件下导出系统的线性积分不变量、通用积分不变量和二阶绝对积分不变量.举例说明结果的应用.
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关键词:
- 广义Birkhoff方程 /
- 线性积分不变量 /
- 通用积分不变量 /
- 二阶绝对积分不变量
Integral invariants of a generalized Birkhoff system are studied in this paper. The condition under which the integral invariants exist in the system is given. A linear integral invariant, a universal integral invariant and an absolute integral invariant of second order of the system are obtained under the given condition. An example is given to illustrate the application of the result.-
Keywords:
- generalized Birkhoff system /
- linear integral invariant /
- universal integral invariant /
- second-order absolute integral invariant
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