Hostname: page-component-848d4c4894-ndmmz Total loading time: 0 Render date: 2024-05-06T19:30:25.963Z Has data issue: false hasContentIssue false

Some weighted estimates for imaginary powers of Laplace operators

Published online by Cambridge University Press:  17 April 2009

Hendra Gunawan
Affiliation:
Department of Mathematics, Bandung Institute of Technology, Bandung 40132, Indonesia e-mail: hgunawan@dns.math.itb.ac.id
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.

We study the boundedness of singular integral operators that are imaginary powers of the Laplace operator in Rn, especially from weighted Hardy spaces to weighted Lebesgue spaces where 0 < p ≤ 1. In particular, we prove some estimates for these operators when 0 < p ≤ 1 and w is in the Muckenhoupt's class Aq, for some q > 1.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2002

References

[1]Cowling, M. and Mauceri, G., ‘On maximal functions’, Rend. Sem. Mat. Fis. Milano 49 (1979). 7987.CrossRefGoogle Scholar
[2]Cowling, M. and Sikora, A., ‘A spectral multiplier theorem for a sublaplacian on SU(2)’, Math. Z. 238 (2001), 136.CrossRefGoogle Scholar
[3]García-Cuerva, J. and de Francia, J.-L. Rubio, Weighted norm inequalities and related topics, North-Holland Mathematical Studies 116 (North-Holland, Amsterdam, 1985).CrossRefGoogle Scholar
[4]Gunawan, H., ‘On weighted estimates for Stein's maximal function’, Bull. Austral. Math. Soc. 54 (1996), 3539.CrossRefGoogle Scholar
[5]Gunawan, H. and Wright, J., ‘Weighted estimates for some singular integrals’, (preprint 2001).Google Scholar
[6]Muckenhoupt, B., ‘On certain singular integrals’, Pacific J. Math. 10 (1960), 239261.CrossRefGoogle Scholar
[7]Sikora, A. and Wright, J., ‘Imaginary powers of Laplace operators’, Proc. Amer. Math. Soc. 129 (2001), 17451754.CrossRefGoogle Scholar
[8]Stein, E.M., Singular integrals and differentiability properties of functions, Princeton Mathematical Series 30 (Princeton Univ. Press, Princeton N.J., 1970)Google Scholar
[9]Stein, E.M., ‘Maximal functions: spherical means’, Proc. Nat. Acad. Sci. USA 73 (1976), 21742175.CrossRefGoogle ScholarPubMed
[10]Stein, E.M., Harmonic analysis: Real-variable methods, orthogonality, and oscillatory integrals, Princeton Mathematical Series 43 (Princeton Univ. Press, Princeton N.J., 1993).Google Scholar