Results 1 to 10 of about 15,074 (239)

On convergence of generalized continued fractions and Ramanujan's conjecture [PDF]

open access: yesComptes Rendus. Mathématique, 2004
We consider continued fractions \frac{-a_1}{1-\frac{a_2}{1-\frac{a_3}{1-...}}} \label{fr} with real coefficients $a_i$ converging to a limit $a$. S.Ramanujan had stated the theorem (see [ABJL], p.38) saying that if $a\neq\frac14$, then the fraction ...
Glutsyuk, A. A.
core   +6 more sources

Applications in Enumerative Combinatorics of In finite Weighted Automata and Graphs [PDF]

open access: yesScientific Annals of Computer Science, 2014
In this paper, we present a general methodology to solve a wide variety of classical lattice path counting problems in a uniform way. These counting problems are related to Dyck paths, Motzkin paths and some generalizations. The methodology uses weighted
R. De Castro, A. Ramírez, J.L. Ramírez
doaj   +1 more source

On the convergence of multidimensional S-fractions with independent variables

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2020
The paper investigates the convergence problem of a special class of branched continued fractions, i.e. the multidimensional S-fractions with independent variables, consisting of \[\sum_{i_1=1}^N\frac{c_{i(1)}z_{i_1}}{1}{\atop+}\sum_{i_2=1}^{i_1}\frac{c_{
O.S. Bodnar   +2 more
doaj   +1 more source

Generalized continued fractions: a unified definition and a Pringsheim-type convergence criterion

open access: yesAdvances in Difference Equations, 2019
In the literature, many generalizations of continued fractions have been introduced, and for each of them, convergence results have been proved. In this paper, we suggest a definition of generalized continued fractions which covers a great variety of ...
Hendrik Baumann
doaj   +1 more source

From asymptotics to spectral measures: determinate versus indeterminate moment problems [PDF]

open access: yes, 2005
In the field of orthogonal polynomials theory, the classical Markov theorem shows that for determinate moment problems the spectral measure is under control of the polynomials asymptotics.
Valent, Galliano
core   +5 more sources

Some properties of approximants for branched continued fractions of the special form with positive and alternating-sign partial numerators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2018
The paper deals with research of convergence for one of the generalizations of continued fractions -- branched continued fractions of the special form with two branches.
T.M. Antonova   +2 more
doaj   +1 more source

Degasperis-Procesi peakons and the discrete cubic string [PDF]

open access: yes, 2005
We use an inverse scattering approach to study multi-peakon solutions of the Degasperis-Procesi (DP) equation, an integrable PDE similar to the Camassa-Holm shallow water equation.
Lundmark, Hans, Szmigielski, Jacek
core   +3 more sources

Classical and Quantum Models in Non-Equilibrium Statistical Mechanics: Moment Methods and Long-Time Approximations

open access: yesEntropy, 2012
We consider non-equilibrium open statistical systems, subject to potentials and to external “heat baths” (hb) at thermal equilibrium at temperature T (either with ab initio dissipation or without it).
Ramon F. Alvarez-Estrada
doaj   +1 more source

A New Approach to Black Hole Quasinormal Modes: A Review of the Asymptotic Iteration Method

open access: yesAdvances in Mathematical Physics, 2012
We discuss how to obtain black hole quasinormal modes (QNMs) using the asymptotic iteration method (AIM), initially developed to solve second-order ordinary differential equations.
H. T. Cho   +4 more
doaj   +1 more source

Completely empty pyramids on integer lattices and two-dimensional faces of multidimensional continued fractions

open access: yes, 2006
In this paper we develop an integer-affine classification of three-dimensional multistory completely empty convex marked pyramids. We apply it to obtain the complete lists of compact two-dimensional faces of multidimensional continued fractions lying in ...
Karpenkov, Oleg
core   +2 more sources

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