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arXiv 2501.04673nlin.SI
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${\cal M}_{n}$-扩展方法:KdV方程

The Method of ${\cal M}_{n}$-Extension: The KdV Equation

Metin Gürses, Aslı Pekcan

AI总结:

本文推广${\cal M}_{2}$-扩展,提出适用于任意可积标量方程的${\cal M}_{n}$-扩展方法,并以KdV方程为例构造多种扩展、递推算子及非局部约化。

摘要:

在本工作中,我们推广了最近提出的${\cal M}_{2}$-扩展。为作说明,我们使用KdV方程。我们给出了KdV方程的五种不同${\cal M}_{3}$-扩展及其递推算子。我们给出了KdV方程${\cal M}_{n}$-扩展的紧凑形式,以及耦合KdV系统的递推算子。${\cal M}_{n}$-扩展方法可应用于任何可积标量方程,以获得可积的多场方程组。我们还给出了KdV的一个${\cal M}_{3}$-扩展示例的未平移和平移非局部约化。

英文摘要:

In this work we generalize ${\cal M}_{2}$-extension that has been introduced recently. For illustration we use the KdV equation. We present five different ${\cal M}_{3}$-extensions of the KdV equation and their recursion operators. We give a compact form of ${\cal M}_{n}$-extension of the KdV equation and recursion operator of the coupled KdV system. The method of ${\cal M}_{n}$-extension can be applied to any integrable scalar equation to obtain integrable multi-field system of equations. We also present unshifted and shifted nonlocal reductions of an example of ${\cal M}_{3}$-extension of KdV.

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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