Hostname: page-component-7bb8b95d7b-s9k8s Total loading time: 0 Render date: 2024-09-26T11:22:02.402Z Has data issue: false hasContentIssue false

A uniqueness theorem for harmonic functions on half-spaces

Published online by Cambridge University Press:  18 May 2009

D. H. Armitage
Affiliation:
Department of Pure Mathematics, The Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland.
Rights & Permissions [Opens in a new window]

Extract

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.

An arbitrary point of the Euclidean space Rn+1, where n > 1, is denoted by (X, y), where XRn and yR, and we denote the Euclidean norm on Rn by ∥·∥. If h is harmonic on the half-space Ω = {(X, y): y > 0}, then we define extended real-valued functions m and M as follows:

and

Type
Research Article
Copyright
Copyright © Glasgow Mathematical Journal Trust 1989

References

1.Armitage, D. H., A new proof of a uniqueness theorem for harmonic functions in half-spaces, Bull. London Math. Soc, 9 (1977), 317320.CrossRefGoogle Scholar
2.Aršon, I. S. and Pak, M. A., A uniqueness theorem for harmonic functions in a half-space (Russian), Mat. Sborn., 68 (110), (1965), 148151.Google Scholar
3.Grigorjan, B. V., Uniqueness theorems for harmonic functions of three variables in a domain of rotation (Russian), Izv. Akad. Nauk Armjan. SSR Ser. Mat., 7 (1972), 8189—mdash;English translation Sov. Mat. 7 (1972), 81–89.Google Scholar
4.Rao, N. V., Carlson theorem for harmonic function in R n, J. Approx. Theory, 12 (1974), 309314.CrossRefGoogle Scholar
5.Zygmund, A., Trigonometric series Vol. II. (Cambridge University Press, Cambridge, 1959).Google Scholar