Results 11 to 20 of about 24,932 (285)

Some properties of certain multivalent harmonic functions

Mathematics, 2023
In this paper, various features of a new class of normalized multivalent harmonic functions in the open unit disk are analyzed, including bounds on coefficients, growth estimations, starlikeness and convexity radii.
Georgia Irina Oros, Yalçın, Sibel, Sibel Yalçın, Bayram, Hasan, Oros, Georgia Irina, Hasan Bayram   +5 more
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Applications of Some Generalized Janowski Meromorphic Multivalent Functions

Journal of Mathematics, 2021
In this article, the ideas of post-quantum calculus and meromorphic multivalent functions are combined and some applications of these functions are discussed.
Wali Khan Mashwani, Muhammad Ghaffar Khan, Maslina Darus, Bakhtiar Ahmad, Muhammad Arif   +4 more
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Certain Subclasses of Multivalent Analytic Functions [PDF]

Abstract and Applied Analysis, 2013
Two new subclasses and of multivalent analytic functions are introduced. Distortion inequalities and inclusion relation for and are obtained.
Jin-Lin Liu, Yi-Ling Cang
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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, Rabha Mohamed El-Ashwah, Teodor Bulboacă, Mohamed Kamal Aouf   +3 more
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Sufficient Conditions for Subordination of Multivalent Functions

Journal of Inequalities and Applications, 2008
The authors investigate various subordination results for some subclasses of analytic functions in the unit disc.
Öznur Özkan Kılıç, Öznur Özkan Kılıç, Özkan Kılıç Öznur   +2 more
core   +3 more sources

Integral means of certain multivalent functions

International Journal of Mathematics and Mathematical Sciences, 2006
For analytic and multivalent functions f(z) and p(z) in the open unit disk U, a subordination theorem due to Littlewood (1925) which was called the integral mean is applied.
H. Özlem Güney, Shigeyoshi Owa, S. Sümer Eker   +2 more
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A Subclass of Meromorphic Multivalent Functions Generated by a Symmetric q-Difference Operator

Mathematics
This paper presents a novel symmetric q-analogue differential operator designed for meromorphic multivalent functions analytic in the punctured open unit disk.
Vasile-Aurel Caus
core   +2 more sources

Subclass of Multivalent -Uniformly Functions with Varying Arguments [PDF]

Journal of Mathematics, 2013
We introduce a class of multivalent -uniformly functions with varying arguments, give some properties of functions in this class, and obtain sharp results including coefficient estimates and distortion theorems.
M. K. Aouf, R. M. El-Ashwah, A. H. Hassan, A. A. M. Hassan   +3 more
core   +2 more sources

Certain Classes of Harmonic Multivalent Functions Based on Hadamard Product

Journal of Inequalities and Applications, 2009
We define and investigate two special subclasses of the class of complex-valued harmonic multivalent functions based on Hadamard ...
H. Özlem Güney, Sakar, F. Muge, Ahuja, Om P., Guney, H. Ozlem, Om P. Ahuja, F. Müge Sakar   +5 more
core   +3 more sources

Subordination and Superordination for Multivalent Functions Associated with the Dziok-Srivastava Operator

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.
Ali RosihanM, Kwon OhSang, Ravichandran V, Cho NakEun   +3 more
core   +1 more source