Singularities of the discrete KdV equation and the Laurent property

Singularities of the discrete KdV equation and the Laurent property
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离散 KdV 方程的奇异性和洛朗性质

DOI:
10.1088/1751-8113/47/6/065201
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发表时间:
2014
期刊:
Journal of Physics A : Mathematical and Theoretical
影响因子:
--
通讯作者:
Masataka
Masataka
中科院分区:
--
文献类型:
--
作者:
KANKI;Masataka

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本文研究了偏差分方程的奇点分布,特别是离散形式的Korteweg-de弗里斯(dKdV)方程的双线性和非线性形式.利用双线性dKdV方程项的Laurent性质、不可约性和互质性,阐明了这些性质与时间演化中零点出现的关系.将所得结果应用于非线性dKdV方程,给出了非线性偏差分方程关于项的互质性的著名的可积性判据(奇点限制检验).
We study the distribution of singularities for partial difference equations, in particular, the bilinear and nonlinear form of the discrete version of the Korteweg–de Vries (dKdV) equation. Using the Laurent property, and the irreducibility, and co-primeness of the terms of the bilinear dKdV equation, we clarify the relationship of these properties with the appearance of zeros in the time evolution. The results are applied to the nonlinear dKdV equation and we formulate the famous integrability criterion (singularity confinement test) for nonlinear partial difference equations with respect to the co-primeness of the terms.
DOI: 10.1007/s002200100446
发表时间: 2001-06
影响因子: 2.4
作者:
H. Sakai
通讯作者: H. Sakai
DOI: 10.1016/0375-9601(92)90235-e
发表时间: 1992
期刊: Physics Letters A
影响因子: 2.6
作者:
A. Ramani;B. Grammaticos;J. Satsuma
通讯作者: J. Satsuma