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Irrationality measures for almost periodic continued fractions

  • Silvia Dodulíková EMAIL logo , Jaroslav Hančl , Ondřej Kolouch , Marko Leinonen and Kalle Leppälä
Published/Copyright: January 8, 2016
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Abstract

We give general results which provide asymptotic irrationality measures and estimations for the denominators of the convergents for certain almost periodic simple continued fraction expansions. As an application we obtain new irrationality measures, for example, to Napier's constant e, certain powers of e, tanh1 and a ratio of modified Bessel functions.

MSC: 11J82; 11A55

Funding source: European Regional Development Fund

Award Identifier / Grant number: CZ.1.05/1.1.00/02.0070

Funding source: Marie Curie IRSES project LIE-DIFF-GEOM

Award Identifier / Grant number: P201/12/2351

Funding source: Academy of Finland

Award Identifier / Grant number: 317721

Received: 2014-4-2
Accepted: 2014-10-8
Published Online: 2016-1-8
Published in Print: 2016-3-1

© 2016 by De Gruyter

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