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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)


The Hausdorff dimension of elliptic measure--a counterexample to the Oksendahl conjecture in $ {\bf R}\sp 2$

Author: Caroline Sweezy
Journal: Proc. Amer. Math. Soc. 116 (1992), 361-368
MSC: Primary 42B25
MathSciNet review: 1161401
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Abstract: Two counterexamples to the Oksendahl conjecture in $ {\mathbb{R}^2}$ for elliptic measure are constructed. It is shown that there exists a strictly elliptic divergence form operator in a specially constructed quasi-disk such that the associated elliptic measure has as its support a set of Hausdorff dimension arbitrarily close to 2. The method is the construction of a quasi-conformal map from a quasi-disk whose boundary has high Hausdorff dimension to the unit disk. The $ L$-operator is the pull-back of $ \Delta $ on the unit disk.

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PII: S 0002-9939(1992)1161401-5
Keywords: Elliptic measure, Hausdorff dimension, quasi-circle, quasi-conformal map
Article copyright: © Copyright 1992 American Mathematical Society

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