Integrable discrete autonomous quad-equations admitting, as generalized symmetries, known five-point differential-difference equations

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作者
Rustem N. Garifullin
Giorgio Gubbiotti
Ravil I. Yamilov
机构
[1] Russian Academy of Sciences,Institute of Mathematics, Ufa Federal Research Centre
[2] The University of Sydney,School of Mathematics and Statistics, F07
关键词
Integrability; Generalized symmetries; Quad-equations; 37L20; 37K10; 39A14;
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摘要
In this paper we construct the autonomous quad-equations which admit as symmetries the five-point differential-difference equations belonging to known lists found by Garifullin, Yamilov and Levi. The obtained equations are classified up to autonomous point transformations and some simple non-autonomous transformations. We discuss our results in the framework of the known literature. There are among them a few new examples of both sine-Gordon and Liouville type equations.
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页码:333 / 357
页数:24
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