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arXiv 2209.07501math.APmath-phmath.MP
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KdV的有界解:唯一性和概周期性的损失

Bounded solutions of KdV: uniqueness and the loss of almost periodicity

Andreia Chapouto, Rowan Killip, Monica Vişan

摘要:

我们解决两个紧迫的问题,在理论的Korteweg-德弗里斯(KdV)方程。首先,我们证明了KdV解的唯一性,这些解仅仅是有界的,没有任何进一步的衰减、规律性、周期性或几乎周期性的假设。第二个问题,强调Deift,关于是否几乎周期的初始数据导致殆周期解KdV。基于新的观察,这是错误的艾里方程,我们构建了一个例子,几乎周期性的初始数据的KdV演化仍然有界,但未能在以后的时间几乎周期。我们的唯一性结果确保了所构造的解是该初始数据的唯一发展。

英文摘要:

We address two pressing questions in the theory of the Korteweg--de Vries (KdV) equation. First, we show the uniqueness of solutions to KdV that are merely bounded, without any further decay, regularity, periodicity, or almost periodicity assumptions. The second question, emphasized by Deift, regards whether almost periodic initial data leads to almost periodic solutions to KdV. Building on the new observation that this is false for the Airy equation, we construct an example of almost periodic initial data whose KdV evolution remains bounded, but fails to be almost periodic at a later time. Our uniqueness result ensures that the solution constructed is the unique development of this initial data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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