Abstract
In light of two measure estimate inequalities from [4] for the iterated Hardy-Littlewood maximal operatorMk f, certain equivalence betweenMk f and the Zygmund classLLogaL are established on\(\mathbb{R}^n \), so that we generalize Stein'sLLogL theorem. In Section 3, a simple induction enables us to prove such extensions onKn, the n-dimensional linear space over a local fieldK, without recoursing to Leckband's result.
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Shijun, Z., Su, W. Lp estimates for the iterated Hardy-Littlewood maximal operator on\(\mathbb{R}^n \) and Kn, k a local fieldand Kn, k a local field. Approx. Theory & its Appl. 14, 36–54 (1998). https://doi.org/10.1007/BF02836766
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DOI: https://doi.org/10.1007/BF02836766