Results 31 to 40 of about 2,308 (173)

Applications of Subordination Chains and Fractional Integral in Fuzzy Differential Subordinations

open access: yesMathematics, 2022
Fuzzy differential subordination theory represents a generalization of the classical concept of differential subordination which emerged in the recent years as a result of embedding the concept of fuzzy set into geometric function theory.
Georgia Irina Oros, Simona Dzitac
doaj   +1 more source

Polynomial series expansions for confluent and Gaussian hypergeometric functions [PDF]

open access: yesMathematics of Computation, 2005
Based on the Hadamard product of power series, polynomial series expansions for confluent hypergeometric functions M ( a ,
Wolfgang Luh   +3 more
openaire   +1 more source

Starlike and Convex Properties for Hypergeometric Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2008
The purpose of the present paper is to give some characterizations for a (Gaussian) hypergeometric function to be in various subclasses of starlike and convex functions. We also consider an integral operator related to the hypergeometric function.
Oh Sang Kwon, Nak Eun Cho
doaj   +1 more source

On Some Formulas for the Lauricella Function

open access: yesMathematics, 2023
Lauricella, G. in 1893 defined four multidimensional hypergeometric functions FA, FB, FC and FD. These functions depended on three variables but were later generalized to many variables.
Ainur Ryskan, Tuhtasin Ergashev
doaj   +1 more source

Precise Estimates for Differences of the Gaussian Hypergeometric Function

open access: yesJournal of Mathematical Analysis and Applications, 1997
For given \(a,b,c,d\in (0,\infty)\), \(a\leq b\), and \(c< d\), the authors study the problem of comparing the Gaussian hypergeometric functions \(F(a,b; a+b; 1-x^c)\) and \(F(a-\delta, b+\delta; a+b; 1- x^d)\). In particular they solve some open problems by determining \(\sup\{\delta\in (0,\infty): F(a,b; a+b; 1-x^c)< F(a-\delta, b+\delta; a+b; 1-x^d)\
Anderson, G.D, Qiu, S.-L, Vuorinen, M
openaire   +2 more sources

A Feynman integral and its recurrences and associators

open access: yesNuclear Physics B, 2016
We determine closed and compact expressions for the ϵ-expansion of certain Gaussian hypergeometric functions expanded around half-integer values by explicitly solving for their recurrence relations.
Georg Puhlfürst, Stephan Stieberger
doaj   +1 more source

New Developments on the Theory of Third-Order Differential Superordination Involving Gaussian Hypergeometric Function

open access: yesMathematics, 2023
The present research aims to present new results regarding the fundamental problem of providing sufficient conditions for finding the best subordinant of a third-order differential superordination. A theorem revealing such conditions is first proved in a
Georgia Irina Oros   +1 more
doaj   +1 more source

Integral representations for a class of triple confluent hypergeometric functions and their applications in boundary value problems

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы
Hypergeometric functions are divided into complete and confluent functions. Srivastava and Karlsson were the first to propose a method for constructing the complete set of triple Gaussian hypergeometric series and compiled a table containing definitions
A. Hasanov, T.G. Ergashev, A.R. Ryskan
doaj   +1 more source

Coefficient Conditions for Starlikeness of Nonnegative Order

open access: yesAbstract and Applied Analysis, 2012
Sufficient conditions on a sequence {ak} of nonnegative numbers are obtained that ensures f(z)=∑k=1∞akzk is starlike of nonnegative order in the unit disk. A result of Vietoris on trigonometric sums is extended in this pursuit.
Rosihan M. Ali   +2 more
doaj   +1 more source

On the complete perturbative solution of one-matrix models

open access: yesPhysics Letters B, 2017
We summarize the recent results about complete solvability of Hermitian and rectangular complex matrix models. Partition functions have very simple character expansions with coefficients made from dimensions of representation of the linear group GL(N ...
A. Mironov, A. Morozov
doaj   +1 more source

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