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arXiv 1908.02413nlin.SImath-phmath.MP
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可积多分量差分方程组

Integrable multi-component difference systems of equations

Pavlos Kassotakis, Maciej Nieszporski, Vassilios Papageorgiou, Anastasios Tongas

摘要:

本文给出了定义在$\mathbb{Z}^2$图的边上的多分量可积差分方程组的两个列表。这些系统的可积性表现为他们的拉克斯制定这是一个结果,这些系统的多维兼容性。施加的限制与差分方程系统一致,我们恢复已知的可积四方程,包括离散版本的Krichever-Novikov方程。差分方程组使我们能够简单地重新表述为杨-巴克斯特映射。还得到了定义在$\mathbb{Z}^2$格顶点上的某些二分量方程组及其非位势形式和定义在5点展式上的可积方程。

英文摘要:

We present two lists of multi-component systems of integrable difference equations defined on the edges of a $\mathbb{Z}^2$ graph. The integrability of these systems is manifested by their Lax formulation which is a consequence of the multi-dimensional compatibility of these systems. Imposing constraints consistent with the systems of difference equations, we recover known integrable quad-equations including the discrete version of the Krichever-Novikov equation. The systems of difference equations allow us for a straightforward reformulation as Yang-Baxter maps. Certain two-component systems of equation defined on the vertices of a $\mathbb{Z}^2$ lattice, their non-potential form and integrable equations defined on 5-point stencils, are also obtained.

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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