Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-28T16:08:01.520Z Has data issue: false hasContentIssue false

A remark on the derivative of the one-dimensional Hardy-Littlewood maximal function

Published online by Cambridge University Press:  17 April 2009

Hitoshi Tanaka
Affiliation:
Department of Mathematics, Gakushuin University, 1–5–1 Mejiro, Toshima-Ku, Tokyo 171–8588, Japan, e-mail: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Dedicated to Professor Kôzô Yabuta on the occasion of his 60th birthday

J. Kinnunen proved that of P > 1, d ≤ 1 and f is a function in the Sobolev space W1,P(Rd), then the first order weak partial derivatives of the Hardy-Littlewood maximal function ℳf belong to LP(Rd). We shall show that, when d = 1, Kinnunen's result can be extended to the case where P = 1.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2002

References

[1]Buckley, S., ‘Is the maximal function of a Lipschitz function continuous?’, Ann. Acad Sci. Fenn. Math. 24 (1999), 519528.Google Scholar
[2]Gilbarg, D. and Trudingear, N.S., Elliptic partial differential equations of second order, Grundlehren der Mathematischen Wissenschaften 224, (2nd edition) (Springer-Verlag, Berlin, Heidelberg, New York, 1983).Google Scholar
[3]Kinnunen, J., ‘The Hardy-Littlewood maximal function of a Sobolev function’, Israel J. Math. 100 (1997), 117124.CrossRefGoogle Scholar
[4]Kinnunnen, J. and Lindqvist, P., ‘The derivative of the maximal function,’, J. Reine Angew. Math. 503 (1998), 161167.Google Scholar