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arXiv 1012.2281math.APmath.DSmath.FAmath.MG
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自相似集上的奇异积分与Heisenberg群中Lipschitz调和函数的可移性

Singular integrals on self-similar sets and removability for Lipschitz harmonic functions in Heisenberg groups

Vasilis Chousionis, Pertti Mattila

摘要:

本文研究度量群的小子集(即测度为零且小于满维的子集)上的奇异积分。我们想到的群的主要例子是欧几里得空间和海森堡群。除了获得结果在一个非常一般的设置,这项工作的目的是双重的,我们将延长一些结果在欧几里得空间更一般的内核比以前考虑,我们将获得在海森堡群的一些应用调和(在海森堡意义上)功能的一些结果较早在欧几里得空间。

英文摘要:

In this paper we study singular integrals on small (that is, measure zero and lower than full dimensional) subsets of metric groups. The main examples of the groups we have in mind are Euclidean spaces and Heisenberg groups. In addition to obtaining results in a very general setting, the purpose of this work is twofold; we shall extend some results in Euclidean spaces to more general kernels than previously considered, and we shall obtain in Heisenberg groups some applications to harmonic (in the Heisenberg sense) functions of some results known earlier in Euclidean spaces.

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