Results 21 to 30 of about 795 (255)

The Generating Function of Ternary Trees and Continued Fractions [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2006
Michael Somos conjectured a relation between Hankel determinants whose entries ${1\over 2n+1}{3n\choose n}$ count ternary trees and the number of certain plane partitions and alternating sign matrices. Tamm evaluated these determinants by showing that the generating function for these entries has a continued fraction that is a special case of Gauss's ...
Ira M. Gessel, Guoce Xin
openaire   +4 more sources

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

Continued Fractions and Generalizations with Many Limits: A Survey [PDF]

open access: yes, 2006
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 survey of results in
Bowman, Douglas, McLaughlin, James
core   +1 more source

Episturmian words: a survey [PDF]

open access: yes, 2007
In this paper, we survey the rich theory of infinite episturmian words which generalize to any finite alphabet, in a rather resembling way, the well-known family of Sturmian words on two letters.
Justin, J.   +5 more
core   +1 more source

Continued Fractions and Generalized Patterns

open access: yesEuropean Journal of Combinatorics, 2002
In [BS] Babson and Steingrimsson introduced generalized permutation patterns that allow the requirement that two adjacent letters in a pattern must be adjacent in the permutation. Let $f_{τ;r}(n)$ be the number of $1\mn3\mn2$-avoiding permutations on $n$ letters that contain exactly $r$ occurrences of $τ$, where $τ$ a generalized pattern on $k$ letters.
openaire   +2 more sources

A special case of rational θs for terminating θ-expansions [PDF]

open access: yesSurveys in Mathematics and its Applications, 2013
There have been quite a few generalizations of the usual continued fraction expansions over the last few years. One very special generalization deals with θ-continued fraction expansions or simply θ-expansions introduced by Bhattacharya and Goswami [A ...
Santanu Chaktaborty
doaj  

Path generating functions and continued fractions

open access: yesJournal of Combinatorial Theory, Series A, 1986
From the authors' abstract: ``This paper extends \textit{P. Flajolet}'s [Discrete Math. 32, 125--161 (1980; Zbl 0445.05014)] combinatorial theory of continued fractions by obtaining the generating function for paths between horizontal lines, with arbitrary starting and ending point and weights on the steps.
Ian P. Goulden, David M. Jackson 0001
openaire   +1 more source

Numerical stability of the branched continued fraction expansion of Horn's hypergeometric function $H_4$

open access: yesМатематичні Студії
In this paper, we consider some numerical aspects of branched continued fractions as special families of functions to represent and expand analytical functions of several complex variables, including generalizations of hypergeometric functions.
R. Dmytryshyn   +3 more
doaj   +1 more source

A Generalization of the Simple Continued Fraction Algorithm [PDF]

open access: yesMathematics of Computation, 1978
In this paper we present a generalization of the continued fraction algorithm, based on a geometric and matrix-theoretic approach. We first give a geometric representation in the plane
openaire   +1 more source

Matrix interpretation of multiple orthogonality [PDF]

open access: yes, 2010
In this work we give an interpretation of a (s(d + 1) + 1)-term recurrence relation in terms of type II multiple orthogonal polynomials.We rewrite this recurrence relation in matrix form and we obtain a three-term recurrence relation for vector ...
Branquinho, Amílcar   +2 more
core   +1 more source

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