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Matematicheskaya Fizika, Analiz, Geometriya [Mathematical Physics, Analysis, Geometry], 2001, Volume 8, Number 3, Pages 308–317
(Mi jmag348)
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A question by Alexei Aleksandrov and logarithmic determinants
Mikhail Sodin School of Mathematical Sciences, Tel-Aviv University, Ramat-Aviv, 69978, Israel
Abstract:
We construct an analytic function $f$ of Smirnov's class in the unit disk such that $\mathrm{Re}\,f$ vanishes almost everywhere on the unit circle and
$$
\liminf_{t\to\infty} t\operatorname{meas}\{\zeta:\,|\zeta|=1,\ |f(\zeta)|\ge t\}=0.
$$
This answers negatively to the question posed by A. Aleksandrov. We also find new sufficient conditions for representations of functions of Smirnov's class by the Schwarz and Cauchy integrals. These conditions extend previous results by Aleksandrov.
Received: 05.06.2001
Citation:
Mikhail Sodin, “A question by Alexei Aleksandrov and logarithmic determinants”, Mat. Fiz. Anal. Geom., 8:3 (2001), 308–317
Linking options:
https://www.mathnet.ru/eng/jmag348 https://www.mathnet.ru/eng/jmag/v8/i3/p308
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Abstract page: | 231 | Full-text PDF : | 70 |
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