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arXiv math-ph/0112007math-phmath.GRmath.MPnlin.SI
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格上方程的Lie点对称与交换流

Lie Point Symmetries and Commuting Flows for Equations on Lattices

D. Levi, P. Winternitz

摘要:

本文综述了格点上差分方程的不同对称形式,并将其应用于线性和非线性偏差分方程的对称约化。李点对称和广义对称被认为是和应用到离散热方程和可积离散时间Toda格。

英文摘要:

Different symmetry formalisms for difference equations on lattices are reviewed and applied to perform symmetry reduction for both linear and nonlinear partial difference equations. Both Lie point symmetries and generalized symmetries are considered and applied to the discrete heat equation and to the integrable discrete time Toda lattice.

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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