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arXiv 1306.1055math.CA
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奇异Fourier乘子的极大算子最优控制

Optimal control of singular Fourier multipliers by maximal operators

Jonathan Bennett

摘要:

我们通过一般的加权$L^2(\mathbb{R})$范数不等式控制一类广义奇异(或“粗糙”)傅立叶乘子的几何定义的极大算子。所涉及的乘数有关的Coifman-卢比奥德Francia-Semmes,满足一定的弱Marcinkiewicz型条件,允许高度振荡的因素的形式$e^{i|ξ|^α}$为$α$积极和消极的。出现的最大函数是一些独立的利益,涉及分数平均与切向的方法区域(相关的Nagel和斯坦),和更新颖的“不当分数平均”与“逃逸”区域。一些应用程序给出了理论的$L^p-L^q$乘子,振荡积分和色散偏微分方程,随着自然扩张到更高的维度。

英文摘要:

We control a broad class of singular (or "rough") Fourier multipliers by geometrically-defined maximal operators via general weighted $L^2(\mathbb{R})$ norm inequalities. The multipliers involved are related to those of Coifman--Rubio de Francia--Semmes, satisfying certain weak Marcinkiewicz-type conditions that permit highly oscillatory factors of the form $e^{i|ξ|^α}$ for both $α$ positive and negative. The maximal functions that arise are of some independent interest, involving fractional averages associated with tangential approach regions (related to those of Nagel and Stein), and more novel "improper fractional averages" associated with "escape" regions. Some applications are given to the theory of $L^p-L^q$ multipliers, oscillatory integrals and dispersive PDE, along with natural extensions to higher dimensions.

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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