Results 1 to 10 of about 113 (68)
On Harmonic Univalent Functions Defined by Dziok-Srivastava Operator
Tikrit Journal of Pure Science, 2022 The purpose of this work is to present a class of harmonic univalent functions defined by the Dziok-Srivastava operator. Some geometric properties like coefficients conditions, distortion theorem, convolution (Hadamard product), convex combination and ...
Mays S. Abdul Ameer +2 more
doaj +2 more sources
Study analytical function subordination properties by applying a novel linear operator [version 1; peer review: 2 approved] [PDF]
F1000ResearchBackground The study of theory for analytic univalent and multivalent functions is an old subject in mathematics, particularly in complex analysis, that has captivated a great deal of scholars owing to the sheer sophistication of its geometrical features
Maryam S. Majel, Mustafa I. Hameed
doaj +2 more sources
Differential Subordinations for Certain Meromorphically Multivalent Functions Defined by Dziok-Srivastava Operator [PDF]
Abstract and Applied Analysis, 2011 By making use of the Dziok-Srivastava operator, we introduce a new class of meromorphically multivalent functions. Some inclusion properties of functions belonging to this class are derived.
Ying Yang, Yu-Qin Tao, Jin-Lin Liu
doaj +3 more sources
A New Subclass of Harmonic Univalent Functions Associated with Dziok-Srivastava Operator [PDF]
International Journal of Mathematics and Mathematical Sciences, 2012 The purpose of the present paper is to study a certain subclass of harmonic univalent functions associated with Dziok-Srivastava operator. We obtain coefficient conditions, distortion bounds, and extreme points for the above class of harmonic univalent ...
A. L. Pathak, K. K. Dixit, R. Agarwal
doaj +3 more sources
Mathematics, 2023 Fuzzy set theory, introduced by Zadeh, gives an adaptable and logical solution to the provocation of introducing, evaluating, and opposing numerous sustainability scenarios.
Alina Alb Lupaş
doaj +1 more source
Journal of Inequalities and Applications, 2007 The purpose of the present paper is to introduce several new classes of analytic functions defined by using the Choi-Saigo-Srivastava operator associated with the Dziok-Srivastava operator and to investigate various inclusion properties of these classes.
Nak Eun Cho, Oh Sang Kwon
doaj +2 more sources
Some Subclasses of Spirallike Multivalent Functions Associated with a Differential Operator
Mathematics, 2022 In this paper we study convolution properties of spirallike multivalent functions defined by using a differential operator and higher order derivatives. Using convolution product relations we determine necessary and sufficient conditions for multivalent ...
Ekram Elsayed Ali +3 more
doaj +1 more source
Journal of Inequalities and Applications, 2011 Subordination and superordination preserving properties for multivalent functions in the open unit disk associated with the Dziok-Srivastava operator are derived. Sandwich-type theorems for these multivalent functions are also obtained.
Kwon OhSang +3 more
doaj +2 more sources
Certain classes of harmonic functions pertaining to special functions [PDF]
Математичні Студії, 2011 Making use of generalized Dziok-Srivastava operator we introduced a new class of complexvalued harmonic functions which are orientation preserving, univalent and starlike in the unit disc.
G. Murugusundaramoorthy +2 more
doaj
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica, 2018 In this paper, we define a new subclass of bi-univalent functions involving a Hohlov operator in the open unit disk. For functions belonging to this class, we obtain estimates on the first two Taylor-Maclaurin coefficients |a2| and | a3|.
Gangadharan Murugusundaramoorthy +1 more
doaj +1 more source