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arXiv 1107.0957math.CA
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作为度量空间的Muckenhoupt $A_\infty$类与加权估计的连续性

The Muckenhoupt $A_\infty$ class as a metric space and continuity of weighted estimates

Nikolaos Pattakos, Alexander Volberg

摘要:

我们展示了如何$A_\infty$类的权重可以被认为是一个度量空间。据我们所知,这是第一次在这个集合上考虑度量d。我们用这个度量推广了文[9]中的结果。也就是说,我们证明了对于任何Calderon-Zygmund算子T和$A_p$,1 < p < 1,权$w_0$,当d(w;w_0)趋于0时,T在$L^{p}(w)$中的算子范数收敛于T在L^{p}(w_{0})中的算子范数.我们还发现这种收敛的速度,并证明是尖锐的。

英文摘要:

We show how the $A_\infty$ class of weights can be considered as a metric space. As far as we know this is the first time that a metric d is considered on this set. We use this metric to generalize the results obtained in [9]. Namely, we show that for any Calderon- Zygmund operator T and an $A_p$, 1 < p < 1, weight $w_0$, the operator norm of T in $L^{p}(w)$ converge to the operator norm of T in L^{p}(w_{0})$ as d(w;w_0) goes to 0. We also find the rate of this convergence and prove that is sharp.

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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