期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1976
卷号：73
期号：7
页码：2174-2175
DOI：10.1073/pnas.73.7.2174
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Let [unk](f)(x) denote the supremum of the averages of f taken over all (surfaces of) spheres centered at x. Then f [->] [unk](f) is bounded on Lp(Rn), whenever p > n/(n - 1), and n [≥] 3.
