Abstract dyadic cubes, maximal operators and Hausdorff content

Abstract dyadic cubes, maximal operators and Hausdorff content
复制标题

抽象二进立方、最大算子和 Hausdorff 内容

DOI:
10.1016/j.bulsci.2016.02.001
复制
发表时间:
2016
影响因子:
1.3
通讯作者:
渡辺俊一
渡辺俊一
中科院分区:
数学4区
文献类型:
--
作者:
齋藤洋樹,田中仁;渡辺俊一

文献摘要

相似文献

设μ是局部有限的Borel测度,D是一族具有一定并矢结构的可测集。对于E⊂Rn和0<α≤n,通过α维Hausdorff内容,我们表示Hμα(E)=inf⁡∑jμ(Q J)α/n,其中下确界由抽象二进立方体的可数族{q j}⊂D取在E的所有覆盖上。本文研究了适用于D和μ的Hardy-Littlewood极大算子M Dμ的有界性,即证明了强型(p,p)不等式∫(M Dμf)p d Hμα≤2 p+2min⁡(1,P)−(α/n)∫|f|p d Hμαforα/n<P<∞,和弱型(α/n,α/n)不等式Hμα({x∈Rn:m Dμf(X)>t})≤4(n/α)α/n t−α/n∫|f|α/n d Hμα,t>0,其中积分取Choquite意义下的积分。
Let μ be a locally finite Borel measure and D a family of measurable sets equipped with a certain dyadic structure. For E⊂ R n and 0< α≤ n, by α-dimensional Hausdorff content we mean H μ α (E)= inf⁡∑ j μ (Q j) α/n, where the infimum is taken over all coverings of E by countable families of the abstract dyadic cubes {Q j}⊂ D. In this paper we study the boundedness of the Hardy–Littlewood maximal operator M D μ adapted to D and μ, that is, we prove the strong type (p, p) inequality∫(M D μ f) p d H μ α≤ 2 2 p+ 2 min⁡(1, p)−(α/n)∫| f| p d H μ α for α/n< p<∞, and the weak type (α/n, α/n) inequality H μ α ({x∈ R n: M D μ f (x)> t})≤ 4 (n/α) α/n t− α/n∫| f| α/n d H μ α, t> 0, where the integrals are taken in the Choquet sense.