Residual symmetries and soliton-cnoidal wave interaction solutions for the negative-order Korteweg-de Vries equation

被引：53
|
作者：
Chen, Junchao [1 ,2 ]
Zhu, Shundong [1 ]
机构：
[1] Lishui Univ, Dept Math, Lishui 323000, Peoples R China
[2] Shandong Univ Sci & Technol, Coll Math & Syst Sci, Qingdao 266590, Peoples R China
来源：
APPLIED MATHEMATICS LETTERS | 2017年 / 73卷
关键词：
Negative-order KdV equation; Residual symmetry; nth backlund transformation; Consistent tanh expansion method; Soliton-cnoidal wave interaction solution; PARTIAL-DIFFERENTIAL-EQUATIONS; EVOLUTION-EQUATIONS; PAINLEVE;
D O I：
10.1016/j.aml.2017.05.002
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
The residual symmetry is derived for the negative-order Korteweg-de Vries equation from the truncated Painleve expansion. This nonlocal symmetry is transformed into the Lie point symmetry and the finite symmetry transformation is presented. The multiple residual symmetries are constructed and localized by introducing new auxiliary variables, and then nth Backlund transformation in terms of determinant is provided. With the help of the consistent tanh expansion (GTE) method, the explicit soliton-cnoidal wave interaction solutions are obtained from the last consistent differential equation. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：136 / 142
页数：7
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