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arXiv 2402.04993math.CAmath.FA
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关于交换子紧致性的注记

Note on the compactness of commutators

University of Helsinki(赫尔辛基大学)

Tuomas Oikari

AI总结:

本文研究了Calderón-Zygmund和粗糙型奇异积分算子交换子的紧致性条件,并提出了一种新的外推原理。

摘要:

本文展示了 Calderón-Zygmund 和粗糙型奇异积分算子的交换子从 $L^p$ 到 $L^q$ 的紧致性最优充分条件,在不同的指数范围 ``q>p

英文摘要:

The optimal sufficient conditions for the $L^p$-to-$L^q$ compactness of commutators of singular integral operators of both Calderón-Zygmund and of rough type are shown in the different exponent ranges $``q>p"$, $``q=p"$ and $``q<p"$ to quickly follow from each other. The approach is through classical compactness interpolation methods. We also present a new elementary off-diagonal to diagonal extrapolation principle for the compactness of commutators of linear operators, which is of independent interest.

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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