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Outer measures and weak type estimates of Hardy-Littlewood maximal operators

Abstract

We will introduce the times modified centered and uncentered Hardy-Littlewood maximal operators on nonhomogeneous spaces for. We will prove that the times modified centered Hardy-Littlewood maximal operator is weak type bounded with constant when if the Radon measure of the space has "continuity" in some sense. In the proof, we will use the outer measure associated with the Radon measure. We will also prove other results of Hardy-Littlewood maximal operators on homogeneous spaces and on the real line by using outer measures.

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Correspondence to Yutaka Terasawa.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Terasawa, Y. Outer measures and weak type estimates of Hardy-Littlewood maximal operators. J Inequal Appl 2006, 15063 (2006). https://doi.org/10.1155/JIA/2006/15063

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