Lie Symmetries for Lattice Equations


Lie symmetries has been introduced by Sophus Lie to study differential equations. It has been one of the most efficient way for obtaining exact analytic solution of differential equations. Here we show how one can extend this technique to the case of differential difference and difference equations.

DOI Code: 10.1285/i15900932v23n2p139

Keywords: Lie symmetries; Difference equations

Classification: 76M60; 34Kxx

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