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Criteria of a multi-weight weak type inequality in Orlicz classes for maximal functions defined on homogeneous type spaces

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Abstract

We obtain some new necessary and sufficient conditions for a multi-weight weak type maximal inequality of the form

$$\begin{aligned} \int _{\{ {x: \mathcal {M} f(x) > \lambda } \}} {\varphi (\lambda {\omega _1}(x))} {\omega _2}(x) \,d\mu \le {c} \int _X \varphi ({c}f(x){\omega _3}(x)){\omega _4}(x) \,d\mu \end{aligned}$$

in Orlicz classes, where \(\mathcal {M} f\) is a Hardy–Littlewood maximal function defined on homogeneous type spaces. Our main result extends some known results.

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Acknowledgement

We would like to express our sincere appreciations to the reviewers for their helpful suggestions.

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Correspondence to Y. Ren.

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Supported by the National Natural Science Foundation of China (Grant No. 11871195).

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Ding, S., Ren, Y. Criteria of a multi-weight weak type inequality in Orlicz classes for maximal functions defined on homogeneous type spaces. Acta Math. Hungar. 162, 677–689 (2020). https://doi.org/10.1007/s10474-020-01050-5

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