A new approach for finding standard heat equation and a special Newell-whitehead equation

A new approach for finding standard heat equation and a special Newell-whitehead equation
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寻找标准热方程和特殊纽厄尔-怀特海德方程的新方法

DOI:
10.2298/tsci181219233g
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发表时间:
2019
期刊:
影响因子:
1.7
通讯作者:
Liu Zheng-Tao
Liu Zheng-Tao
中科院分区:
工程技术4区
文献类型:
--
作者:
Guo Xiu-Rong;Zhang Yu-Feng;Guo Mei;Liu Zheng-Tao

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在 2 的框架下? 2矩阵李代数,Tu和Meng[9]曾经建立了Ablowitz-Kaup-Newel-Segur(AKNS)层次、D-AKNS层次、Levi层次和TD层次的统一可积模型。基于这个思想,我们引入两个分块矩阵李代数来提出一个等谱问题,其相容条件产生了一种可积层次结构,可以简化为Levi层次结构和AKNS层次结构等。我们在论文中得到的统一可积模型与Tu和Meng给出的模型不同。特别地,本文的主要结果可以简化为两个新的Levi层次可积耦合,从中我们再次得到标准热方程和一个特殊的Newell-Whitehead方程。
Under a frame of 2 ? 2 matrix Lie algebras, Tu and Meng [9] once established a united integrable model of the Ablowitz-Kaup-Newel-Segur (AKNS) hierarchy, the D-AKNS hierarchy, the Levi hierarchy and the TD hierarchy. Based on this idea, we introduce two block-matrix Lie algebras to present an isospectral problem, whose compatibility condition gives rise to a type of integrable hierarchy which can be reduced to the Levi hierarchy and the AKNS hierarchy, and so on. A united integrable model obtained by us in the paper is different from that given by Tu and Meng. Specially, the main result in the paper can be reduced to two new various integrable couplings of the Levi hierarchy, from which we again obtain the standard heat equation and a special Newell-Whitehead equation.
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