A fifth order semidiscrete mKdV equation

A fifth order semidiscrete mKdV equation
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五阶半离散 mKdV 方程

DOI:
10.1007/s11425-012-4447-2
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发表时间:
2013
期刊:
Science China Mathematics
影响因子:
--
通讯作者:
He Peng
He Peng
中科院分区:
其他
文献类型:
--
作者:
Zhou Tong;Zhu Zuonong;He Peng

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为了更好地理解高阶半离散mKdV方程与高阶mKdV方程之间的关系,本文从三个已知的半离散mKdV通量出发,构造了一个五阶半离散mKdV方程.我们不仅给出了它的Lax对、Darboux变换、显式解和无穷多个守恒律,而且证明了它们的连续极限得到了五阶mKdV方程的相应结果.因此,五阶离散mKdV方程是一种非常有用的离散格式.
In this paper, aiming to get more insight on the relation between the higher order semidiscrete mKdV equations and higher order mKdV equations, we construct a fifth order semidiscrete mKdV equation from the three known semidiscrete mKdV fluxes. We not only give its Lax pairs, Darboux transformation, explicit solutions and infinitely many conservation laws, but also show that their continuous limits yield the corresponding results for the fifth order mKdV equation. We thus conclude that the fifth order discrete mKdV equation is extremely an useful discrete scheme for the fifth order mKdV equation.
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