关于Marcinkiewicz型算子及其交换子的某些估计
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摘要
本文共三章,主要研究三个方面的内容:Marcinkiewicz积分在加权Campanato空间中的有界性;分数次型Marcinkiewicz积分的有界性;分数次型Marcinkiewicz积分交换子在Hardy空间中的估计.
     行文结构安排如下:
     第一章,得到了Marcinkiewicz积分在加权Campanato空间中的有界性,其中核满足.这推广了已知的结果.
     设S~(n-1)表示Rn中的单位球面,Ω是S~(n-1)上具有消失性的零次齐次函数,即
     对任意的x = 0 ,记x = x/|x|.此时高维的分数次型Marcinkiewicz积分定义为
     其中
     第二章,得到了分数次型Marcinkiewicz积分的有界性,其中核满足L~q-Dini条件.
     设b(x)∈Lloc(Rn),则由μ_(Ω,α)和b生成的高维的分数次型Marcinkiewicz积分交换子定义为
     其中
     第三章,得到了由Lipα(0 <α≤1)函数和μ?,α生成的分数次型Marcinkiewicz积分交换子在Hardy空间中的有界性,其中的核满足某种对数型的Lipschitz条件.
There are three chapters in this thesis,which focuses on three contents:the bounded-ness of the Marcinkiewicz integral operator on certain weighted Campanato spaces; thebounededness of the fractional type Marcinkiewicz integral; estimates for the fractionaltype Marcinkiewicz Integral Commutator.
     The outline of the paper is arranged as follows:
     In Chapter 1,we obtain the boundedness of the Marcinkiewicz integral operator oncertain weighted Campanato spaces,which generalize the results that we know.
     Suppose that S~(n-1) is the unit sphere of Rn(n≥2)equipped with the normalizedLebesgue measure dσ= dσ(x). LetΩbe homogeneous of degree zero and satisfies thecancelation conditionwhere x = x/|x| for any x = 0. We define the fractional type Marcinkiewicz integral ofhigher dimension bywhere
     In chapter 2,we obtain the boundedness of the fractional type Marcinkiewicz Integralμ_(Ω,α) with the kernel satisfying L~q-Dini condition.Let b(x)∈Lloc(Rn), then the fractional type Marcinkiewicz integral commutator ofhigher dimension is defined bywhere
     In chapter 3,we obtain estimates for the fractional type Marcinkiewicz Integral Com-mutatorμ_b~(Ω,α) on Hardy spaces with the kernel satisfying the logarithmic type Lipschitzcondition, where b∈Lip_α(0 <α≤1).
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