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AN ARITHMETICAL EXCURSION VIA STONEHAM NUMBERS

Part of: Probabilistic theory: distribution modulo $1$; metric theory of algorithms

Published online by Cambridge University Press:  27 March 2014

MICHAEL COONS
MICHAEL COONS*
Affiliation:
School of Mathematical and Physical Sciences, University of Newcastle, University Drive, Callaghan NSW 2308, Australia email [email protected]
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Abstract

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Let $\def \xmlpi #1{}\def \mathsfbi #1{\boldsymbol {\mathsf {#1}}}\let \le =\leqslant \let \leq =\leqslant \let \ge =\geqslant \let \geq =\geqslant \def \Pr {\mathit {Pr}}\def \Fr {\mathit {Fr}}\def \Rey {\mathit {Re}}p$ be a prime and $b$ a primitive root of $p^2$. In this paper, we give an explicit formula for the number of times a value in $\{0,1,\ldots,b-1\}$ occurs in the periodic part of the base-$b$ expansion of $1/p^m$. As a consequence of this result, we prove two recent conjectures of Aragón Artacho et al. [‘Walking on real numbers’, Math. Intelligencer35(1) (2013), 42–60] concerning the base-$b$ expansion of Stoneham numbers.

Keywords

Stoneham numbersbase-b expansionsnormal numbers

MSC classification

Secondary: 11K16: Normal numbers, radix expansions, Pisot numbers, Salem numbers, good lattice points, etc.
Type
Research Article
Information
Journal of the Australian Mathematical Society , Volume 96 , Issue 3 , June 2014 , pp. 303 - 315
Copyright
Copyright © 2014 Australian Mathematical Publishing Association Inc. 

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