Periodic points in complex continued fractions by J. Hurwitz

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1. Verfasser: Yasutomi, Shin-ichi
Format: Preprint
Veröffentlicht: 2024
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author Yasutomi, Shin-ichi
author_facet Yasutomi, Shin-ichi
contents J. Hurwitz introduced an algorithm that generates a continued fraction expansion for complex numbers $α\in \mathbb{C}$, where the partial quotients belong to $(1+i)\mathbb{Z}[i]$. J. Hurwitz's work also provides a result analogous to Lagrange's theorem on periodic continued fractions, describing purely periodic points using the dual continued fraction expansion. S. Tanaka \cite{ST} examined the identical algorithm and constructed the natural extension of the transformation generating the continued fraction expansion and established its ergodic properties. In this paper, we aim to describe J. Hurwitz's insights into purely periodic points explicitly through the natural extension.
format Preprint
id arxiv_https___arxiv_org_abs_2410_16683
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Periodic points in complex continued fractions by J. Hurwitz
Yasutomi, Shin-ichi
Number Theory
11J70, 11Y65, 11A55
J. Hurwitz introduced an algorithm that generates a continued fraction expansion for complex numbers $α\in \mathbb{C}$, where the partial quotients belong to $(1+i)\mathbb{Z}[i]$. J. Hurwitz's work also provides a result analogous to Lagrange's theorem on periodic continued fractions, describing purely periodic points using the dual continued fraction expansion. S. Tanaka \cite{ST} examined the identical algorithm and constructed the natural extension of the transformation generating the continued fraction expansion and established its ergodic properties. In this paper, we aim to describe J. Hurwitz's insights into purely periodic points explicitly through the natural extension.
title Periodic points in complex continued fractions by J. Hurwitz
topic Number Theory
11J70, 11Y65, 11A55
url https://arxiv.org/abs/2410.16683