activity
20232026
collaborators

5 papers

math.DS2026

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

Yuto Nakajima, Hiroki Takahasi

We prove that the set of complex irrationals whose partial quotients in their Hurwitz continued fraction expansion are naturally regarded as subsets of and contain in…

math.NT2026

Hausdorff dimension of sets of numbers whose continued fractions contain arbitrarily long arithmetic progressions

Yuto Nakajima, Hiroki Takahasi, Baowei Wang

Continued fractions with prescribed structures on sequences of their partial quotients have been intensively studied in the literature. As far as an integer sequence, especially a…

math.NT2025

Hausdorff dimension of intersections between the Jarník sets and Diophantine fractals

Hiroki Takahasi

The irrationality exponent of a real number measures how well that number can be approximated by rationals. Real numbers with irrationality exponent strictly greater than are t…

math.NT2025

Density combinatorics theorems in fractal dimension theory of continued fractions

Yuto Nakajima, Hiroki Takahasi

We build a bridge from density combinatorics to dimension theory of continued fractions. We establish a fractal transference principle that transfers common properties of subsets o…

math.DS2023

Restricted slowly growing digits for infinite iterated function systems

Gerardo González Robert, Mumtaz Hussain, Nikita Shulga +1

For an infinite iterated function system on with an attractor and for an infinite subset , consider the set \[ \mathbb E…