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.

Integrable discrete autonomous quad-equations admitting, as generalized symmetries, known five-point differential-difference equations / R.N. Garifullin, G. Gubbiotti, R.I. Yamilov. - In: JOURNAL OF NONLINEAR MATHEMATICAL PHYSICS. - ISSN 1402-9251. - 26:3(2019), pp. 333-357. [10.1080/14029251.2019.1613050]

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

G. Gubbiotti
;
2019

Abstract

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.
Generalized symmetries; Integrability; Quad-equations
Settore MAT/07 - Fisica Matematica
2019
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/904322
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