Meromorphic solutions to the KdV equation with non-decaying initial data supported on a left half line

Meromorphic solutions to the KdV equation with non-decaying initial data supported on a left half line
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左半线支持非衰减初始数据的 KdV 方程的亚纯解

DOI:
10.1088/0951-7715/23/5/007
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发表时间:
2010
期刊:
影响因子:
1.7
通讯作者:
A. Rybkin
A. Rybkin
中科院分区:
数学2区
文献类型:
--
作者:
A. Rybkin

文献摘要

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我们证明了在Korteweg-de Vries流下,一个支持在(−∞,0)上的初始轮廓从一个非常广泛的函数类(没有任何衰减假设)瞬间演化成一个实线上没有极点的亚纯函数。我们的处理是基于对逆散射变换的适当修改和对Titchmarsh-Weyl m-函数的详细研究。作为副产品,我们改进了其他人的一些相关结果。
We show that under the Korteweg–de Vries flow an initial profile supported on (−∞, 0) from a very broad function class (without any decay assumption) instantaneously evolves into a meromorphic function with no poles on the real line. Our treatment is based on a suitable modification of the inverse scattering transform and a detailed investigation of the Titchmarsh–Weyl m-function. As a by-product, we improve some related results of others.