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arXiv math-ph/0611032math-phmath.MP
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守恒律的等价性与位势系统的等价性

Equivalence of conservation laws and equivalence of potential systems

Nataliya M. Ivanova, Roman O. Popovych

摘要:

我们研究守恒定律和潜在的对称性(系统)微分方程应用等价关系产生的点之间的转换方程。以Fokker-Planck方程和Burgers方程为例进行了讨论。利用约化的一维线性热方程,我们构造了完整的局部和潜在的守恒律族,并描述,在某种意义上,所有的潜在的对称性。在建议的框架中解释已知的结果。本文是对J. - Q. Mei和H.- Q. Zhang [Internat.理论物理学杂志,2006,in press]。

英文摘要:

We study conservation laws and potential symmetries of (systems of) differential equations applying equivalence relations generated by point transformations between the equations. A Fokker-Planck equation and the Burgers equation are considered as examples. Using reducibility of them to the one-dimensional linear heat equation, we construct complete hierarchies of local and potential conservation laws for them and describe, in some sense, all their potential symmetries. Known results on the subject are interpreted in the proposed framework. This paper is an extended comment on the paper of J.-q. Mei and H.-q. Zhang [Internat. J. Theoret. Phys., 2006, in press].

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