On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratios

The paper investigates the problem of constructing branched continued fraction expansions of hypergeometric functions \(F_M(a_1,a_2,b_1,b_2;a_1,c_2;\mathbf{z})\) and their ratios. Recurrence relations of the hypergeometric function \(F_M\) are established, which provide the construction of formal br...

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Main Authors: Ivan Nyzhnyk, Roman Dmytryshyn, Tamara Antonova
Format: Article
Language:English
Published: Tuncer Acar 2025-03-01
Series:Modern Mathematical Methods
Subjects:
Online Access:https://modernmathmeth.com/index.php/pub/article/view/52
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author Ivan Nyzhnyk
Roman Dmytryshyn
Tamara Antonova
author_facet Ivan Nyzhnyk
Roman Dmytryshyn
Tamara Antonova
author_sort Ivan Nyzhnyk
collection DOAJ
description The paper investigates the problem of constructing branched continued fraction expansions of hypergeometric functions \(F_M(a_1,a_2,b_1,b_2;a_1,c_2;\mathbf{z})\) and their ratios. Recurrence relations of the hypergeometric function \(F_M\) are established, which provide the construction of formal branched continued fractions with simple structures, the elements of which are polynomials in the variables \(z_1, z_2, z_3.\) To construct the expansions, a method of based on the so-called complete group of ratios of hypergeometric functions was used, which is a generalization of the classical Gauss method.
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spelling doaj-art-64a5c32f77de42f7b2b58137496ffeec2025-08-20T03:03:40ZengTuncer AcarModern Mathematical Methods3023-52942025-03-013152On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratiosIvan Nyzhnyk0https://orcid.org/0009-0009-8434-687XRoman Dmytryshyn1https://orcid.org/0000-0003-2845-0137Tamara Antonova2https://orcid.org/0000-0002-0358-4641Vasyl Stefanyk Precarpathian National UniversityVasyl Stefanyk Precarpathian National UniversityLviv Polytechnic National UniversityThe paper investigates the problem of constructing branched continued fraction expansions of hypergeometric functions \(F_M(a_1,a_2,b_1,b_2;a_1,c_2;\mathbf{z})\) and their ratios. Recurrence relations of the hypergeometric function \(F_M\) are established, which provide the construction of formal branched continued fractions with simple structures, the elements of which are polynomials in the variables \(z_1, z_2, z_3.\) To construct the expansions, a method of based on the so-called complete group of ratios of hypergeometric functions was used, which is a generalization of the classical Gauss method.https://modernmathmeth.com/index.php/pub/article/view/52hypergeometric functionrecurrence relationbranched continued fractionapproximation by rational functions
spellingShingle Ivan Nyzhnyk
Roman Dmytryshyn
Tamara Antonova
On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratios
Modern Mathematical Methods
hypergeometric function
recurrence relation
branched continued fraction
approximation by rational functions
title On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratios
title_full On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratios
title_fullStr On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratios
title_full_unstemmed On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratios
title_short On branched continued fraction expansions of hypergeometric functions \(F_M\) and their ratios
title_sort on branched continued fraction expansions of hypergeometric functions f m and their ratios
topic hypergeometric function
recurrence relation
branched continued fraction
approximation by rational functions
url https://modernmathmeth.com/index.php/pub/article/view/52
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AT tamaraantonova onbranchedcontinuedfractionexpansionsofhypergeometricfunctionsfmandtheirratios