arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.01212math.CAmath.AP
收藏

奇异积分算子的小波表示

Wavelet Representation of Singular Integral Operators

Francesco Di Plinio, Brett D. Wick, Tyler Williams

摘要:

本文提出了一种新的方法来表示的奇异积分算子的Calderón-Zygmund型连续模型运营商,在经典和双参数设置。该表示被实现为可消或非可消类型的小波投影的平均值的有限和,它们本身是Calderón-Zygmund算子。这两个属性是遥不可及的既定的二元概率技术。与他们的二元对应,我们的表示反映了额外的内核平滑的运营商进行分析。我们的表示公式自然地导致一个新的家庭的$T(1)$定理加权索伯列夫空间的光滑性指数是自然相关的核光滑。在一个参数的情况下,我们得到的索伯列夫空间模拟的$A_2$定理,也就是说,尖锐的依赖性的Sobolev范数的$T$上的重量特性是在整个范围内的指数。在双参数设置,当地平均稀疏统治是不是一般可用,我们得到定量$A_p$估计是最有名的,和尖锐的范围$\max\{p,p'\}\geq 3$的完全取消的情况下。

英文摘要:

This article develops a novel approach to the representation of singular integral operators of Calderón-Zygmund type in terms of continuous model operators, in both the classical and the bi-parametric setting. The representation is realized as a finite sum of averages of wavelet projections of either cancellative or noncancellative type, which are themselves Calderón-Zygmund operators. Both properties are out of reach for the established dyadic-probabilistic technique. Unlike their dyadic counterparts, our representation reflects the additional kernel smoothness of the operator being analyzed. Our representation formulas lead naturally to a new family of $T(1)$ theorems on weighted Sobolev spaces whose smoothness index is naturally related to kernel smoothness. In the one parameter case, we obtain the Sobolev space analogue of the $A_2$ theorem; that is, sharp dependence of the Sobolev norm of $T$ on the weight characteristic is obtained in the full range of exponents. In the bi-parametric setting, where local average sparse domination is not generally available, we obtain quantitative $A_p$ estimates which are best known, and sharp in the range $\max\{p,p'\}\geq 3$ for the fully cancellative case.

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。

↑