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arXiv 2112.03079math.AP
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Navier-斯托克斯方程温和解的联合时空解析性

Joint space-time analyticity of mild solutions to the Navier-Stokes equations

Cong Wang, Yu Gao, Xiaoping Xue

摘要:

本文给出了Navier-斯托克斯方程解的时空导数的最优衰减率估计和联合时空解析性。由Hartogs定理可知,对于一个具有两个复变数的复变函数,其关于两个变数的联合解析性可以由关于每个变数的解析性的组合导出。然而,作为空间和时间两个实变量的函数,Navier-斯托克斯方程解的联合时空解析性不能直接从空间解析性和时间解析性的组合中获得。我们的结果似乎是Navier-斯托克斯方程解的时空联合解析性的第一个定量结果,而且证明只涉及实变量方法。此外,衰减率估计也产生的增长(在时间上)的半径的空间解析性,时间解析性,和联合时空解析的解决方案。

英文摘要:

In this paper, we show the optimal decay rate estimates of the space-time derivatives and the joint space-time analyticity of solutions to the Navier-Stokes equations. As it is known from the Hartogs's theorem, for a complex function with two complex variables, the joint analyticity with respect to two variables can be derived from combining of analyticity with respect to each variable. However, as a function of two real variables for space and time, the joint space-time analyticity of solutions to the Navier-Stokes equations cannot be directly obtained from the combination of space analyticity and time analyticity. Our result seems to be the first quantitative result for the joint space-time analyticity of solutions to the Navier-Stokes equations, and the proof only involves real variable methods. Moreover, the decay rate estimates also yield the bounds on the growth (in time) of radius of space analyticity, time analyticity, and joint space-time analyticity of solutions.

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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