Results 81 to 90 of about 439 (121)

Coefficient Bounds for Certain Subclasses of q-Starlike Functions

open access: yesMathematics, 2019
By making use of q-calculus, we define and investigate several new subclasses of bi-univalent mappings related to the q-Noor integral operator. The coefficient bounds | u 2 | , | u 3 | and the Fekete−Szegő problem u ...
Lin-Lin Fan   +5 more
doaj   +1 more source

Coefficient estimate problems for a new subclass of bi-univalent functions linked with the generalized bivariate fibonacci-like polynomial [PDF]

open access: yes
In this article, using the definition of generalized bivariate Fibonacci-like polynomials that include Horadam and Chebyshev polynomials a novel subclass of bi-univalent functions are introduced.
Aktaş, İbrahim   +1 more
core   +2 more sources

The Fekete-Szegö problem for a general class of bi-univalent functions satisfying subordinate conditions [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2017
In this work, we obtain the Fekete-Szegö inequalities for the class $P_{Sigma }left( lambda ,phi right) $ of bi-univalent functions. The results presented in this paper improve the recent work of Prema and Keerthi [11].
Şahsene Altınkaya, Sibel Yalҫın
doaj  

Some New Subclasses of Bi-Univalent Functions Related to Quantum Calculus

open access: yesMathematics
The primary objective of this paper is to introduce and investigate several novel subclasses of bi-univalent functions associated with the q-calculus framework.
Renjie Guo   +5 more
doaj   +1 more source

Fekete-Szegö inequalities for certain subclasses of meromorphic functions of complex order

open access: yesLe Matematiche, 2013
In this paper, we obtain Fekete-Szegö inequalities for a certain class of meromorphic functions f(z). Sharp bounds for the Fekete-Szegö functional |a1-μa02|are obtained.
Rabha M. El-Ashwah   +2 more
doaj  

Fekete-Szego inequality for certain class of close-to-convex functions on a real parameter / Nonis Airina Mohd Arshad [PDF]

open access: yes
In the present paper, we examine the upper bounds of the second Fekete-Szego inequality. The geometric function theory of complex analysis is a fascinating study area, focusing on analytic univalent functions and their geometric properties. However, this
Mohd Arshad, Nonis Airina
core  

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