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arXiv 1905.01481math.DSmath.NT
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Beta展开式中频率集的豪斯多夫维数

Hausdorff dimension of frequency sets in beta-expansions

Yao-Qiang Li

摘要:

通过应用2014年关于满圆柱分布的结果,我们给出了一个有用的民间传说的证明:对于任何$β>1$,移位空间$S_β$中任意集合的豪斯多夫维数等于其在$[0,1]$中自然投影的豪斯多夫维数。它已被用于一些以前的文件没有证据。当$1$的$β$ -展开式是有限的时,利用变分公式计算频率集的豪斯多夫维数,只需关注显阶的马尔可夫测度.具体地说,它足以优化一个函数与许多变量在某些限制。最后,作为应用,我们得到了一类重要的$β$的频率集的豪斯多夫维数的精确公式,这类频率集被称为伪黄金比率(也称为多纳奇数).

英文摘要:

By applying a 2014 result on the distribution of full cylinders, we give a proof of the useful folklore: for any $β>1$, the Hausdorff dimension of an arbitrary set in the shift space $S_β$ is equal to the Hausdorff dimension of its natural projection in $[0,1]$. It has been used in some former papers without proof. Then we clarify that for calculating the Hausdorff dimension of frequency sets using variational formulae, one only needs to focus on the Markov measures of explicit order when the $β$-expansion of $1$ is finite. Concretely, it suffices to optimize a function with finitely many variables under some restrictions. Finally, as an application, we obtain an exact formula for the Hausdorff dimension of frequency sets for an important class of $β$'s, which are called pseudo-golden ratios (also called multinacci numbers).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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