A short proof of Hara and Nakai’s theorem

Oh, Byung-Geun

doi:10.1090/S0002-9939-08-09610-X

A short proof of Hara and Nakai’s theorem
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Proc. Amer. Math. Soc. 136 (2008), 4385-4388 Request permission

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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