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中文摘要：
研究Birkhoff系统Noether-Mei对称性与守恒量。给出Birkhoff系统Noether-Mei对称性的定义和判据,研究了Birkhoff系统的Noether-Mei对称性导致的Noether守恒量和Mei守恒量的条件及其形式,建立了两个Noether-Mei对称性定理,并举例说明结果的应用。
英文摘要：
The Noether-Mei symmetry and the conserved quantity of a Birkhoffian system are studied.The definition and the criteria of the Noether-Mei symmetry of the system are given. The conditions that the Noether-Mei symmetry leads to the Noether conserved quantity or the Mei conserved quantity and the form of the conserved quantities are obtained. Two theorems for the Noether-Mei symmetry and the conserved quantity are established. At the end,an example is given to illustrate the application of the results.
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