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The Dirichlet Problem on the Heisenberg Group III: Harmonic Measure of a certain Half-Space

Published online by Cambridge University Press:  20 November 2018

Bernard Gaveau  and
Jacques Vauthier
Bernard Gaveau
Affiliation:
Université Paris VI, Paris, France
Jacques Vauthier
Affiliation:
Université Paris VI, Paris, France
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0. Introduction. In this short note we give an explicit computation of the harmonic measure of a half space x > 0 in the 3-dimensional Heisenberg group in terms of a degenerate hypergeometric function. A probabilistic argument reduces the whole problem to a Hermite-type equation on a half line, that we can solve in terms of the function G(l/4, 1/2; x2).

A preliminary attempt to compute this kernel was done in [1] p. 107 and, cited by Huber [4]. Unfortunately a small mistake was made in [1] and the problem was still open until now. The first author is very grateful to Prof. Huber for having pointed out the weak argument of [1]. Since that time, other harmonic measures and even Green functions have been explicitly computed (see [2]).

Type
Research Article
Information
Canadian Journal of Mathematics , Volume 38 , Issue 3 , 01 June 1986 , pp. 666 - 671
Copyright
Copyright © Canadian Mathematical Society 1986

References

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