Results 11 to 20 of about 94 (47)

Classes of spirallike functions defined by the Dziok-Srivastava operator

open access: yesLe Matematiche, 2014
Making use of the Dziok-Srivastava operator, we introduce two classes of analytic functions and investigate convolution properties, the necessary and sufficient condition, coefficient estimates and inclusion properties for these classes.
Tamer Seoudy
doaj   +2 more sources

Differential sandwich theorems of symmetric points associated with Dziok-Srivastava operator

open access: yesLe Matematiche, 2013
In this paper we obtain some applications of theory of differential subordination, superordination and sandwich results for the classes of symmetric points associated with Dziok-Srivastava operator.
Rabba M. El-Ashwah   +3 more
doaj   +3 more sources

Certain Properties of Multivalent Functions Associated with the Dziok-Srivastava Operator [PDF]

open access: yesJournal of Mathematics, 2013
Summary: By making use of the techniques of the differential subordination, we derive certain properties of \(p\)-valent functions associated with the Dziok-Srivastava operator.
T. M. Seoudy
doaj   +3 more sources

A Subclass of Harmonic Univalent Functions Associated with -Analogue of Dziok-Srivastava Operator [PDF]

open access: yesISRN Mathematical Analysis, 2013
We study a class of complex-valued harmonic univalent functions using a generalized operator involving basic hypergeometric function. Precisely, we give a necessary and sufficient coefficient condition for functions in this class. Distortion bounds, extreme points, and neighborhood of such functions are also considered.
Huda Aldweby, Maslina Darus
openaire   +1 more source

A Class of Starlike Functions Defined by the Dziok-Srivastava Operator

open access: yesKyungpook mathematical journal, 2009
Abstract. A comprehensive class of starlike univalent functions de ned by Dziok-Srivastava operator is introduced. Necessary and sucient coecient bounds are givenfor functions in this class to be starlike. Further distortion bounds, extreme points andresults on partial sums are investigated. 1. IntroductionLet Adenote the class of functions of the form(
Herb Silverman   +2 more
openaire   +2 more sources

Subclasses of Bi-Univalent Functions of Complex Order Based on Subordination Conditions Involving Wright Hypergeometric Functions

open access: yesJournal of Mathematical and Fundamental Sciences, 2015
In this paper, we introduce and investigate a new subclass of bi-univalent functions Σ of complex order dened in the open unit disk, which are associated with hypergeometric functions and satisfying subordinate conditions. Furthermore, we nd estimates on
Gangadharan Murugusundaramoorthy
doaj   +1 more source

Application of convolution and Dziok-Srivastava linear operators on analytic and p-valent functions [PDF]

open access: yesFilomat, 2006
In this paper, we introduce a new class of multivalent functions defined by convolution and Dziok-Srivastava operator and study some properties of this class e.g. coefficient estimates, integral representation, distortion and closure theorems, convolution and integral operator.
Sh. Najafzadeh, S. Kulkarni, D. Kalaj
openaire   +1 more source

Subclass of harmonic univalent functions defined by Dziok-Srivastava operator

open access: yesLe Matematiche, 2013
In this paper we introduce a new class of harmonic univalent functions defined by the Dziok-Srivastava operator. Coefficient estimates, extreme points, distortion bounds and convex combination for functions belonging to this class are obtained and also ...
M. K. Aouf   +3 more
doaj  

Retraction Notice to "Differential Subordinations for Higher-Order Derivatives of Multivalent Analytic Functions Associated with Dziok-Srivastava Operator"

open access: yesInternational Journal of Analysis and Applications, 2018
This article has been retracted for multiple submissions and duplicate publication.
Editorial Board
doaj   +2 more sources

ON SANDWICH THEOREMS FOR CERTAIN SUBCLASSES OF ANALYTIC FUNCTIONS ASSOCIATED WITH DZIOK-SRIVASTAVA OPERATOR

open access: yesTaiwanese Journal of Mathematics, 2009
In the present paper, we give some applications of first order differential subordination and superordinations to obtain sufficient conditions for normalized analytic functions defined by certain linear operators to be subordinated and superordinated to a given univalent function.
Shanmugam, T. N., Jeyaraman, M. P.
openaire   +2 more sources

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