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arXiv 1209.0159nlin.SImath-phmath.MP
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负AKNS层次的函数表示

Functional representation of the negative AKNS hierarchy

V. E. Vekslerchik

摘要:

本文主要研究AKNS体系的负流。这项工作的主要成果是扩展AKNS层次结构的功能表示,包括积极(经典)和消极的流量。我们推导出一组有限的功能方程,构造的Miwa的移位,其中包含所有方程的层次。利用得到的函数表示,我们将负子族的非局部方程转化为高阶局部系统,推导出扩展AKNS族的守恒律和N暗孤立子解的母函数。作为一个额外的结果,我们得到的功能表示的Landau-Lifshitz层次。

英文摘要:

This paper is devoted to the negative flows of the AKNS hierarchy. The main result of this work is the functional representation of the extended AKNS hierarchy, composed of both positive (classical) and negative flows. We derive a finite set of functional equations, constructed by means of the Miwa's shifts, which contains all equations of the hierarchy. Using the obtained functional representation we convert the nonlocal equations of the negative subhierarchy into local systems of higher order, derive the generating function of the conservation laws and the N-dark-soliton solutions for the extended AKNS hierarchy. As an additional result we obtain the functional representation of the Landau-Lifshitz hierarchy.

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