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


A short proof of Hara and Nakai's theorem

Author: Byung-Geun Oh
Journal: Proc. Amer. Math. Soc. 136 (2008), 4385-4388
MSC (2000): Primary 30H05, 30D55
Published electronically: July 23, 2008
MathSciNet review: 2431053
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Abstract: We give a short proof of the following theorem of Hara and Nakai: for a finitely bordered Riemann surface $ R$, one can find an upper bound of the corona constant of $ R$ that depends only on the genus and the number of boundary components of $ R$.

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Additional Information

Byung-Geun Oh
Affiliation: Department of Mathematics Education, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea

PII: S 0002-9939(08)09610-X
Keywords: Corona problem, bounded analytic function
Received by editor(s): November 14, 2007
Published electronically: July 23, 2008
Additional Notes: This work was supported by the research fund of Hanyang University (HY-2007-000-0000-4844).
Communicated by: Mario Bonk
Article copyright: © Copyright 2008 American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication.

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