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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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The irrationality exponents of computable numbers
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by Verónica Becher, Yann Bugeaud and Theodore A. Slaman PDF
Proc. Amer. Math. Soc. 144 (2016), 1509-1521 Request permission

Abstract:

We establish that there exist computable real numbers whose irrationality exponent is not computable.
References
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Additional Information
  • Verónica Becher
  • Affiliation: Departamento de Computacion, Universidad de Buenos Aires, Pabellón I, Ciudad Universitaria, C1428EGA Ciudad Autónoma de Buenos Aires, Argentina
  • MR Author ID: 368040
  • Email: vbecher@dc.uba.ar
  • Yann Bugeaud
  • Affiliation: UFR de Mathématique et d’Informatique, Université de Strasbourg, 7 rue René Descartes, 67084 Strasbourg Cedex, France
  • Email: bugeaud@math.unistra.fr
  • Theodore A. Slaman
  • Affiliation: Department of Mathematics, 970 Evans Hall, University of California Berkeley, Berkeley, California 94720
  • MR Author ID: 163530
  • Email: slaman@math.berkeley.edu
  • Received by editor(s): August 22, 2014
  • Received by editor(s) in revised form: May 13, 2015
  • Published electronically: October 6, 2015
  • Communicated by: Matthew A. Papanikolas
  • © Copyright 2015 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 144 (2016), 1509-1521
  • MSC (2010): Primary 11J04; Secondary 03Dxx
  • DOI: https://doi.org/10.1090/proc/12841
  • MathSciNet review: 3451228