2016
DOI: 10.1090/tran/6617
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On digit frequencies in 𝛽-expansions

Abstract: Abstract. We study the sets DF(β) of digit frequencies of β-expansions of numbers in [0,1]. We show that DF(β) is a compact convex set with countably many extreme points which varies continuously with β; that there is a full measure collection of non-trivial closed intervals on each of which DF(β) mode locks to a constant polytope with rational vertices; and that the generic digit frequency set has infinitely many extreme points, accumulating on a single non-rational extreme point whose components are rational… Show more

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Cited by 10 publications
(3 citation statements)
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“…As can be seen in Figure 2, γ(β) is a devil's staircase: it is continuous, non-decreasing, and has zero derivative almost everywhere. The same function arises when considering digit frequencies for β-expansions, as described by Boyland et al in [1].…”
Section: 1mentioning
confidence: 79%
“…As can be seen in Figure 2, γ(β) is a devil's staircase: it is continuous, non-decreasing, and has zero derivative almost everywhere. The same function arises when considering digit frequencies for β-expansions, as described by Boyland et al in [1].…”
Section: 1mentioning
confidence: 79%
“…Since then, much attention has been paid to the β-dynamical system ([0, 1], T β , ν β ) and β-expansions of real numbers, see [3][4][5][6][7][8], etc, and references therein. Given β > 1, for any x ∈ [0, 1], the sequence ε(x, β) = ε 1 (x, β)ε 2 (x, β) .…”
Section: Introductionmentioning
confidence: 99%
“…Despite being a subject that has its origins in the early 20th century, representations of real numbers and their digit frequencies is still motivating researchers. For some recent contributions in this area see [9,13,16] and the references therein. Most of the existing work in this area was done in a setting where the representation is unique.…”
Section: Introductionmentioning
confidence: 99%