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arXiv 0907.3205nlin.SImath-phmath.APmath.MP
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几个(2+1)维可积非线性发展方程的规范不变描述

Gauge-invariant description of several (2+1)-dimensional integrable nonlinear evolution equations

V. G. Dubrovsky, A. V. Gramolin

摘要:

我们得到了二维非线性可积系统的新规范不变形式:Sawada-Kotera和Kaup-Kuperschloven系统,广义色散长波系统和Nizhnik-Veselov-Novikov系统.我们展示了这些形式如何包含新的和众所周知的二维可积非线性方程:Sawada-Kotera方程,Kaup-Kuperscherg方程,色散长波系统,Nizhnik-Veselov-Novikov方程,和修改的Nizhnik-Veselov-Novikov方程。我们考虑不同规范下的非线性方程之间的Miura型变换。

英文摘要:

We obtain new gauge-invariant forms of two-dimensional integrable systems of nonlinear equations: the Sawada-Kotera and Kaup-Kuperschmidt system, the generalized system of dispersive long waves, and the Nizhnik-Veselov-Novikov system. We show how these forms imply both new and well-known two-dimensional integrable nonlinear equations: the Sawada-Kotera equation, Kaup-Kuperschmidt equation, dispersive long-wave system, Nizhnik-Veselov-Novikov equation, and modified Nizhnik-Veselov-Novikov equation. We consider Miura-type transformations between nonlinear equations in different gauges.

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