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arXiv 2302.00945math.DS
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半正则连分数的重正化格式

A Renormalization Scheme for Semi-Regular Continued Fractions

Niels Langeveld, David Ralston

摘要:

本文研究了一个重正化方案,利用它可以自然地求出一个数的所有半正则连分数。我们定义了两个映射T_slow和T_fast:这些映射是针对[0,1]中的(x,y)定义的,其中x是T_slow根据参数y开发半正则连分数表示的数。当参数y变化时,x的所有可能的半正则连分数表示的集合被双射构造。图T_fast是图T_slow的一个“加速”版本,我们证明了T_fast关于一个与勒贝格测度相互绝对连续的概率测度是遍历的.相反,T_slow不保持这样的测度,但保持了一个与勒贝格测度相互绝对连续的无限的、σ有限的测度。此外,我们生成一系列替换,这些替换生成y轨道的符号编码。在最后一节中,我们强调我们的计划可以用来生成半定期连分数明确特定的连分数算法,如中田的阿尔法连分数。

英文摘要:

In this article we study a renormalization scheme with which we find all semi-regular continued fractions of a number in a natural way. We define two maps, T_slow and T_fast: these maps are defined for (x,y) in [0,1], where x is the number for which a semi-regular continued fraction representation is developed by T_slow according to the parameter y. The set of all possible semi-regular continued fraction representations of x are bijectively constructed as the parameter y varies. The map T_fast is a "sped-up" version of the map T_slow, and we show that T_fast is ergodic with respect to a probability measure which is mutually absolutely continuous with Lebesgue measure. In contrast, T_slow preserves no such measure, but does preserve an infinite, sigma-finite measure mutually absolutely continuous with Lebesgue measure. Furthermore, we generate a sequence of substitutions which generate a symbolic coding of the orbit of y. In the last section we highlight how our scheme can be used to generate semi-regular continued fractions explicitly for specific continued fraction algorithms such as Nakada's alpha continued fractions.

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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