arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0901.2888math.AP
收藏

Dirichlet到Neumann算子的平行线性化及三维水波的正则性

Paralinearization of the Dirichlet to Neumann operator, and regularity of three-dimensional water waves

Thomas Alazard, Guy Métivier

摘要:

本文研究了基本区为对称菱形的三维双周期重力行波的先验$C^\infty$正则性。这种波的存在是一个长期存在的公开问题解决最近由Looss和Plotnikov。主要困难在于,与传统的自由边界问题不同,三维纯重力波的约化边界系统不是椭圆的,这导致了小因子问题。我们的主要结果断言,充分光滑的钻石波,满足丢番图条件自动$C^\infty$。特别地,我们证明了由Looss和Plotnikov定义的解是$C^\infty$。两个值得注意的技术方面是(i)不需要小性条件和(ii)我们获得了Dirichlet到Neumann算子的精确线性化公式。

英文摘要:

This paper is concerned with a priori $C^\infty$ regularity for three-dimensional doubly periodic travelling gravity waves whose fundamental domain is a symmetric diamond. The existence of such waves was a long standing open problem solved recently by Iooss and Plotnikov. The main difficulty is that, unlike conventional free boundary problems, the reduced boundary system is not elliptic for three-dimensional pure gravity waves, which leads to small divisors problems. Our main result asserts that sufficiently smooth diamond waves which satisfy a diophantine condition are automatically $C^\infty$. In particular, we prove that the solutions defined by Iooss and Plotnikov are $C^\infty$. Two notable technical aspects are that (i) no smallness condition is required and (ii) we obtain an exact paralinearization formula for the Dirichlet to Neumann operator.

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。

↑