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arXiv 1004.5507math.CAmath.APmath.FA
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Besov和Triebel-Lizorkin空间的点态特征与拟共形映射

Pointwise Characterizations of Besov and Triebel-Lizorkin Spaces and Quasiconformal Mappings

Pekka Koskela, Dachun Yang, Yuan Zhou

摘要:

本文利用点态不等式刻画了经典Besov空间$\dot B^s_{p,\,q}$和Triebel-Lizorkin空间$\dot F^s_{p,\,q}$,其中$\dot B^s_{p,\,q}$和$\dot F^s_{p,\,q}$是${\mathbb R}^n$和度量测度空间中的所有$s\in(0,\,1)$和$p,\,q\in(n/(n+s),\,\infty],$的二重和反二重性质.应用这一刻画,证明了对所有的$s\in(0,\,1)$和$q\in(n/(n+s),\,\infty]$,拟共形映射保持$\dot F^s_{n/s,\,q}$在$\rn$上.还建立了上述态射性质的度量测度空间形式。

英文摘要:

In this paper, the authors characterize, in terms of pointwise inequalities, the classical Besov spaces $\dot B^s_{p,\,q}$ and Triebel-Lizorkin spaces $\dot F^s_{p,\,q}$ for all $s\in(0,\,1)$ and $p,\,q\in(n/(n+s),\,\infty],$ both in ${\mathbb R}^n$ and in the metric measure spaces enjoying the doubling and reverse doubling properties. Applying this characterization, the authors prove that quasiconformal mappings preserve $\dot F^s_{n/s,\,q}$ on $\rn$ for all $s\in(0,\,1)$ and $q\in(n/(n+s),\,\infty]$. A metric measure space version of the above morphism property is also established.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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