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arXiv 1903.07718math.AP
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改进的修正Boussinesq方程的几乎最优局部适定性

Almost optimal local well-posedness for improved modified Boussinesq equations

Dan-Andrei Geba, Bai Lin

摘要:

本文研究了一类改进的修正Boussinesq方程,首先给出了它在空间$(H^s\cap L^\infty)\times (H^s\cap L^\infty)(\mathbb{R})$($s\geq 0$)中的局部适定性的另一种证明,以取代Constantin和Molinet的证明.其次,我们表明,相关的流图是不光滑的,当考虑从$H^s\times H^s(\mathbb{R})$到$H^s(\mathbb{R})$为$s<0$,从而提供了一个阈值的规律性需要执行皮卡德迭代这些方程。

英文摘要:

In this article, we investigate a class of improved modified Boussinesq equations, for which we provide first an alternate proof of local well-posedness in the space $(H^s\cap L^\infty)\times (H^s\cap L^\infty)(\mathbb{R})$ ($s\geq 0$) to the one obtained by Constantin and Molinet. Secondly, we show that the associated flow map is not smooth when considered from $H^s\times H^s(\mathbb{R})$ into $H^s(\mathbb{R})$ for $s<0$, thus providing a threshold for the regularity needed to perform a Picard iteration for these equations.

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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