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：1982
卷号：79
期号：24
页码：7958-7960
DOI：10.1073/pnas.79.24.7958
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：We show that the ratios (A(u)/N(u))kA(u) and (N(u)/A(u))kN(u) have Lp norms equivalent with the Hp norm of u. Here A(u) is the Lusin area integral and N(u) is the nontangential maximal function.
关键词：Lusin area integral ; nontangential maximal function
