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arXiv · 1612.03652

On the integrability of a discrete analogue of the Kaup-Kupershmidt equation

R. N. Garifullin·R. I. Yamilov
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Abstract

We study a new example of equation obtained as a result of a recent generalized symmetry classification of differential-difference equations defined on five points of one-dimensional lattice. We have established that in the continuous limit this new equation goes into the well-known Kaup-Kupershmidt equation. We have also proved its integrability by constructing an $L-A$ pair and conservation laws. Moreover, we present a possibly new scheme for deriving conservation laws from $L-A$ pairs.

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R. N. Garifullin, R. I. Yamilov. 2016-12-12. On the integrability of a discrete analogue of the Kaup-Kupershmidt equation. https://arxiv.org/abs/1612.03652

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