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arXiv 1301.7191math.FA
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度量测度空间中的分式极大函数

Fractional maximal functions in metric measure spaces

Toni Heikkinen, Juha Lehrbäck, Juho Nuutinen, Heli Tuominen

摘要:

研究了Sobolev空间和Campanato空间中的分数次极大算子在度量测度空间中的映射性质。在度量测度空间的某些限制下,分数阶极大算子改善了Campanato空间中函数和映射函数的Sobolev正则性,使其成为Hölder连续函数.给出了Lipschitz函数的分式极大函数不连续的一个例子。

英文摘要:

We study the mapping properties of fractional maximal operators in Sobolev and Campanato spaces in metric measure spaces. We show that, under certain restrictions on the underlying metric measure space, fractional maximal operators improve the Sobolev regularity of functions and map functions in Campanato spaces to Hölder continuous functions. We also give an example of a space where fractional maximal function of a Lipschitz function fails to be continuous.

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