D. Badziahin
Thue-Morse constant is not badly approximable
Badziahin, D.; Zorin, E.
Authors
E. Zorin
Abstract
We prove that Thue–Morse constant τTM=0.01101001…2 is not a badly approximable number. Moreover, we prove that τTM(a)=0.01101001…a is not badly approximable for every integer base a≥2 such that a is not divisible by 15. At the same time, we provide a precise formula for convergents of the Laurent series f~TM(z)=z−1∏∞n=1(1−z−2n), thus developing further the research initiated by Alf van der Poorten and others.
Citation
Badziahin, D., & Zorin, E. (2015). Thue-Morse constant is not badly approximable. International Mathematics Research Notices, 2015(19), 9618-9637. https://doi.org/10.1093/imrn/rnu238
Journal Article Type | Article |
---|---|
Acceptance Date | Nov 5, 2014 |
Online Publication Date | Dec 4, 2014 |
Publication Date | Nov 1, 2015 |
Deposit Date | Nov 26, 2014 |
Publicly Available Date | Dec 18, 2014 |
Journal | International Mathematics Research Notices |
Print ISSN | 1073-7928 |
Electronic ISSN | 1687-0247 |
Publisher | Oxford University Press |
Peer Reviewed | Peer Reviewed |
Volume | 2015 |
Issue | 19 |
Pages | 9618-9637 |
DOI | https://doi.org/10.1093/imrn/rnu238 |
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Copyright Statement
This is a pre-copyedited, author-produced PDF of an article accepted for publication in International Mathematics Research Notices following peer review. The definitive publisher-authenticated version Badziahin, D. and Zorin, E. (2015) 'Thue-Morse constant is not badly approximable.', International mathematics research notices, 2015(19): 9618-9637 is available online at: http://dx.doi.org/10.1093/imrn/rnu238.
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