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arXiv 0709.3238math-phmath.MP
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多维差分方程的Lie对称性

Lie symmetries of multidimensional difference equations

Decio Levi, Sébastien Tremblay, Pavel Winternitz

摘要:

给出了二维格点上标量差分方程Lie点对称性的一种计算方法。对称变换作用于方程和晶格。它们将解转化为解,并可用于执行对称性约简。该方法概括了一个在最近出版的情况下,常差分方程。反过来,它可以很容易地推广到涉及任意数量的因变量和自变量的差分系统。

英文摘要:

A method is presented for calculating the Lie point symmetries of a scalar difference equation on a two-dimensional lattice. The symmetry transformations act on the equations and on the lattice. They take solutions into solutions and can be used to perform symmetry reduction. The method generalizes one presented in a recent publication for the case of ordinary difference equations. In turn, it can easily be generalized to difference systems involving an arbitrary number of dependent and independent variables.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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