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We describe a simple method that produces automatically closed forms for the coefficients of continued fractions expansions of a large number of special functions. The function is specified by a non-linear differential equation and initial…

Symbolic Computation · Computer Science 2015-07-16 Sébastien Maulat , Bruno Salvy

A continued fractions based verification of the Hurwitz values for the Hecke triangle groups is given, completing a program of Lehner's. Ergodic theory shows that Diophantine approximation by mediant convergents of the Rosen continued…

Number Theory · Mathematics 2015-05-13 Cor Kraaikamp , Hitoshi Nakada , Thomas A. Schmidt

We describe an approximate rational arithmetic with round-off errors (both absolute and relative) controlled by the user. The rounding procedure is based on the continued fraction expansion of real numbers. Results of computer experiments…

Numerical Analysis · Mathematics 2025-10-20 Grigori Litvinov , Anatoli Rodionov , Andrei Chourkin

In this work, we study a continued fractions theory for the topological completion of the field of Puiseux series. As usual, we prove that any element in the completion can be developed as a unique continued fractions, whose coefficients…

Number Theory · Mathematics 2024-07-09 Luis Arenas-Carmona , Claudio Bravo

The (classical) Lagrange spectrum is a closed subset of the positive real numbers defined in terms of diophantine approximation. Its structure is quite involved. This article describes a polynomial time algorithm to approximate it in…

Dynamical Systems · Mathematics 2019-11-28 Vincent Delecroix , Carlos Matheus , Carlos Gustavo Moreira

Continued fractions have a long history in number theory, especially in the area of Diophantine approximation. The aim of this expository paper is to survey the main results on the theory of $p$--adic continued fractions, i.e. continued…

Number Theory · Mathematics 2023-06-27 Giuliano Romeo

By using a jump transformation associated to the Romik map, we define a new continued fraction algorithm called odd-odd continued fraction, whose principal convergents are rational numbers of odd denominators and odd numerators. Among…

Dynamical Systems · Mathematics 2024-03-20 Dong Han Kim , Seul Bee Lee , Lingmin Liao

The nearest integer continued fraction of a real number $x$ from $[-1/2, 1/2)$ is defined. Some metrical properties of these expansions are presented. We define the approximation coefficients and give an important result on them. The main…

Number Theory · Mathematics 2011-06-22 Dan Lascu , George Cirlig , Ion Coltescu

The notion of 'bifurcating continued fractions' is introduced. Two coupled sequences of non-negative integers are obtained from an ordered pair of positive real numbers in a manner that generalizes the notion of continued fractions. These…

General Mathematics · Mathematics 2007-05-23 Ashok Kumar Gupta , Ashok Kumar Mittal

A new algebraic object is introduced - recurrent fractions, which is an n-dimensional generalization of continued fractions. It is used to describe an algorithm for rational approximations of algebraic irrational numbers. Some…

Number Theory · Mathematics 2011-03-31 Roman Zatorsky

It has been a long standing problem to find good symbolic codings for translations on the $d$-dimensional torus that enjoy the beautiful properties of Sturmian sequences like low factor complexity and good local discrepancy properties.…

Dynamical Systems · Mathematics 2021-11-01 Valérie Berthé , Wolfgang Steiner , Jörg M. Thuswaldner

Our aim is to find a complex continued fraction algorithm finding all the best Diophantine approximations to a complex number. Using the sequence of minimal vectors in a two dimensional lattice over Gaussian integers, we obtain an algorithm…

Number Theory · Mathematics 2021-10-05 Nicolas Chevallier

We give continued fraction expansions of the generating functions of Bernoulli numbers, Cauchy numbers, Euler numbers, harmonic numbers, and their generalized or related numbers. In particular, we focus on explicit forms of the convergents…

Number Theory · Mathematics 2020-02-25 Takao Komatsu

There are infinite processes (matrix products, continued fractions, $(r,s)$-matrix continued fractions, recurrence sequences) which, under certain circumstances, do not converge but instead diverge in a very predictable way. We give a…

Number Theory · Mathematics 2019-01-07 Douglas Bowman , James Mc Laughlin

We propose and study a generalized continued fraction algorithm that can be executed in an arbitrary imaginary quadratic field, the novelty being a non-restriction to the five Euclidean cases. Many hallmark properties of classical continued…

Number Theory · Mathematics 2022-07-12 Daniel E. Martin

We introduce a random dynamical system related to continued fraction expansions. It uses random combination of the Gauss map and the R\'enyi (or backwards) continued fraction map. We explore the continued fraction expansions that this…

Dynamical Systems · Mathematics 2015-07-22 Charlene Kalle , Tom Kempton , Evgeny Verbitskiy

Let $\frak E$ denote be the ring of Eisenstein integers. Let $z\in \mathbb C$ and $p_n,q_n \in \frak E$ be such that $\{p_n/q_n\}$ is the sequence of convergents corresponding to the continued fraction expansion of $z$ with respect to the…

Number Theory · Mathematics 2017-03-23 S. G. Dani

It is desirable that a given continued fraction algorithm is simple in the sense that the possible representations can be characterized in an easy way. In this context the so-called finite range condition plays a prominent role. We show…

Number Theory · Mathematics 2024-12-11 Charlene Kalle , Fanni M. Sélley , Jörg M. Thuswaldner

An Engel series is a sum of the reciprocals of an increasing sequence of positive integers, which is such that each term is divisible by the previous one. Here we consider a particular class of Engel series, for which each term of the…

Number Theory · Mathematics 2015-09-14 Andrew N. W. Hone

By a classical result of Gauss and Kuzmin, the continued fraction expansion of a ``random'' real number contains each digit $a\in\mathbb{N}$ with asymptotic frequency $\log_2(1+1/(a(a+2)))$. We generalize this result in two directions:…

Number Theory · Mathematics 2025-11-06 Alex Jin , Shreyas Singh , Zhuo Zhang , AJ Hildebrand