Boundedness and concentration of random singular integrals defined by wavelet summability kernels

preprint2021arXivOpen access

Abstract

We use Cramér-Chernoff type estimates in order to study the Calderón-Zygmund structure of the kernels ∑I∈DaI(ω)ψI(x)ψI(y)\sum_{I\in\mathcal{D}}a_I(ω)ψ_I(x)ψ_I(y) where aIa_I are subgaussian independent random variables and {ψI:I∈D}\{ψ_I: I\in\mathcal{D}\} is a wavelet basis where D\mathcal{D} are the dyadic intervals in R\mathbb{R}. We consider both, the cases of standard smooth wavelets and the case of the Haar wavelet.

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