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研究Emden动力学方程的形式不变性即Mei对称性，给出其定义和确定方程，研究Emden方程的Mei对称性与Noether对称性、Lie对称性之间的关系，寻求系统的守恒量，给出一个例子说明结果的应用.
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关键词:
- Emden动力学方程 /
- Mei对称性 /
- Noether对称性 /
- Lie对称性
The Mei symmetry, i.e. the form invariance, of an Emden system is studied. The definition and determining equation of Mei symmetry in the Emden system are given. The relations between the Mei symmetry,the Lie symmetry and the Noether symmetry are studied, and the conserved quantities of the Emden system are obtained. An example is given to illustrate the application of the results.-
Keywords:
- Emden system /
- Mei symmetry /
- Noether symmetry /
- Lie symmetry
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