How many points contain homothetic copies in their Hurwitz continued fraction expansion?

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Authors: Yuto Nakajima, Hiroki Takahasi
Cited by: 0

Abstract

We prove that the set of complex irrationals whose partial quotients in their Hurwitz continued fraction expansion are naturally regarded as subsets of $\mathbb Z^2$ and contain infinitely many homothetic copies of any finite subset of $\mathbb Z^2$ is of Hausdorff dimension $1$. Our result provides a clear and concrete example of multidimensional pattern emergence in number-theoretic expansions.

Fields of Study & Subjects

Mathematical Dynamics and Fractals Analytic Number Theory Research advanced mathematical theories

Publication details

Journal / source
arXiv (Cornell University)
Publication date
25 January 2026
Document type
Preprint