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This article is cited in 13 scientific papers (total in 13 papers)
A strengthening of a theorem of Bourgain and Kontorovich. IV
I. D. Kan Moscow Aviation Institute (State University of Aerospace Technologies)
Abstract:
We prove that the denominators of finite continued fractions all of whose
partial quotients belong to the alphabet $\{1,2,3,4\}$ form a set of positive
density. The analogous theorem was known earlier only for alphabets of larger
cardinality. The first result of this kind was obtained in 2011 for the alphabet
$\{1,2,\dots,50\}$ by Bourgain and Kontorovich. In 2013, the present
author, together with Frolenkov, proved the corresponding theorem
for the alphabet $\{1,2,3,4,5\}$. A 2014 result of the present author
dealt with the alphabet $\{1,2,3,4,10\}$.
Keywords:
continued fraction, continuant, trigonometric sum, Zaremba's conjecture.
Received: 23.02.2015 Revised: 22.01.2016
Citation:
I. D. Kan, “A strengthening of a theorem of Bourgain and Kontorovich. IV”, Izv. Math., 80:6 (2016), 1094–1117
Linking options:
https://www.mathnet.ru/eng/im8360https://doi.org/10.1070/IM8360 https://www.mathnet.ru/eng/im/v80/i6/p103
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Abstract page: | 480 | Russian version PDF: | 67 | English version PDF: | 33 | References: | 65 | First page: | 26 |
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