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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

We find Stieltjes-type and Jacobi-type continued fractions for some "master polynomials" that enumerate permutations, set partitions or perfect matchings with a large (sometimes infinite) number of simultaneous statistics. Our results…

Combinatorics · Mathematics 2022-04-19 Alan D. Sokal , Jiang Zeng

If the odd and even parts of a continued fraction converge to different values, the continued fraction may or may not converge in the general sense. We prove a theorem which settles the question of general convergence for a wide class of…

Number Theory · Mathematics 2019-01-03 Douglas Bowman , James Mc Laughlin

We give conditions on sequences of positive algebraic numbers $\{a_{n,j}\}_{n=1}^\infty$, $j=1,\dots ,M$ and number field $\mathbb K$ to ensure that the numbers defined by the continued fractions $[0;a_{1,j},a_{2,j},\dots ]$, $j=1,\dots ,M$…

Number Theory · Mathematics 2024-06-28 Jaroslav Hančl , Mathias L. Laursen , Jitu Berhanu Leta

Symmetrical subdivisions in the space of Jager Pairs for continued fractions-like expansions will provide us with bounds on their difference. Results will also apply to the classical regular and backwards continued fractions expansions,…

Number Theory · Mathematics 2013-01-29 Avraham Bourla

In this short Survey we revisit the subject of local, identity-tangent diffeomorphisms of $\doC$ and their analytic invariants, under two viewpoints: that of explicit expansions, which necessarily involve multitangents and multizetas; and…

Dynamical Systems · Mathematics 2014-04-04 Olivier Bouillot , Jean Ecalle

This paper presents a reinterpretation of a second-order linear recurrence sequence as a sequence of continuants derived from the convergents to a continued fraction. As a result, we are able to derive the generating function and Binet…

Number Theory · Mathematics 2025-08-26 Hongshen Chua

In a previous paper, we showed the existence of an uncountable set of points on the unit circle at which the Rogers-Ramanujan continued fraction does not converge to a finite value. In this present paper, we generalise this result to a…

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

We use a continued fraction approach to compare two statistical ensembles of quadrangulations with a boundary, both controlled by two parameters. In the first ensemble, the quadrangulations are bicolored and the parameters control their…

Combinatorics · Mathematics 2017-11-20 Éric Fusy , Emmanuel Guitter

A well known theorem of Lagrange states that the simple continued fraction of a real number $\alpha$ is periodic if and only if $\alpha$ is a quadratic irrational. We examine non-periodic and non-simple continued fractions formed by two…

Number Theory · Mathematics 2018-12-03 Michael Obiero Oyengo

There is a theory of continued fractions for Laurent series in x^{-1} with coefficients in a field F. This theory bears a close analogy with classical continued fractions for real numbers with Laurent series playing the role of real numbers…

Number Theory · Mathematics 2007-05-23 David P. Robbins

We develop an analog of the exponential families of Wilf in which the label sets are finite dimensional vector spaces over a finite field rather than finite sets of positive integers. The essential features of exponential families are…

Combinatorics · Mathematics 2007-05-23 Kent E. Morrison

In this paper, we establish a q-analog of partial fraction decomposition formula. By using formula, we develop new closed form representations of sums of q-harmonic numbers and reciprocal q-binomial coefficients. Moreover, we give explicit…

Number Theory · Mathematics 2017-10-24 Ce Xu

We show that two notions of continued fraction normality, one where overlapping occurrences of finite patterns are counted as distinct occurrences, and another where only disjoint occurrences are counted as distinct, are identical. This…

Dynamical Systems · Mathematics 2019-09-11 Satyadev Nandakumar , Subin Pulari , Prateek Vishnoi , Gopal Viswanathan

Several continued fraction expansions for $e$ have been produced by an automated conjecture generator (ACG) called \emph{The Ramanujan Machine}. Some of these were already known, some have recently been proved and some remain unproven.…

History and Overview · Mathematics 2020-12-24 Peter Lynch

The theory of continued fractions has been generalized to l-adic numbers by several authors and presents many differences with respect to the real case. In the present paper we investigate the expansion of rationals and quadratic…

Number Theory · Mathematics 2024-04-09 Laura Capuano , Francesco Veneziano , Umberto Zannier

We prove a suite of dynamical results, including exactness of the transformation and piecewise-analyticity of the invariant measure, for a family of continued fraction systems, including specific examples over reals, complex numbers,…

Dynamical Systems · Mathematics 2023-03-07 Anton Lukyanenko , Joseph Vandehey

This paper is a sequel to our previous work in which we found a combinatorial realization of continued fractions as quotients of the number of perfect matchings of snake graphs. We show how this realization reflects the convergents of the…

Combinatorics · Mathematics 2019-08-23 Ilke Canakci , Ralf Schiffler

We study a difference Riccati equation $\Phi(x) + \rho(x)/\Phi(x-\omega) = v(x)$ with $1-$periodic continuos coefficients. Using continued fraction theory we investigate a problem of existence of continuos solutions for this equation. It is…

Dynamical Systems · Mathematics 2024-10-11 Alexey V. Ivanov

We develop new closed form representations of sums of (n + {\alpha})th shifted harmonic numbers and reciprocal binomial coefficients in terms of {\alpha}th shifted harmonic numbers. Some interesting new consequences and illustrative…

Number Theory · Mathematics 2017-03-30 Ce Xu