P(ZD)-IMPROVING PROPERTIES AND SPARSE BOUNDS FOR DISCRETE SPHERICAL MAXIMAL AVERAGES
P(ZD)-IMPROVING PROPERTIES AND SPARSE BOUNDS FOR DISCRETE SPHERICAL MAXIMAL AVERAGES
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P(ZD)-改进离散球最大平均的性质和稀疏界限
DOI:
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发表时间:
2021
期刊:
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通讯作者:
R. Kesler
中科院分区:
文献类型:
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作者:
R. Kesler;R. Kesler
We exhibit a range of p(Zd)-improving properties for the discrete spherical maximal average in every dimension d ≥ 5. These improving properties are then used to establish sparse bounds, which extend the discrete maximal theorem of Magyar, Stein, and Wainger to weighted spaces. In particular, the sparse bounds imply that in every dimension d ≥ 5 the discrete spherical maximal average is a bounded map from 2(w) into 2(w) provided w d d−4 belongs to the Muckenhoupt class A2.