Results 71 to 80 of about 5,934,786 (218)

Coefficient Estimates for New Subclasses of Meromorphic Bi-Univalent Functions [PDF]

International Scholarly Research Notices, 2014
We introduce and investigate two new subclasses Mσα,λ and Mσβ,λ of meromorphic bi-univalent functions defined on Δ={z:z∈C,1<|z|<∞}. For functions belonging to these classes, estimates on the initial coefficients are obtained.
openaire   +4 more sources

Second Hankel Determinant of Bi-univalent Functions

Malaysian Journal of Fundamental and Applied Sciences, 2023
Let  be the class of functions which are analytic in the open unit disk and having the form . Denote  to be the class for all functions in  that are univalent in . Then, let  denote the class of bi-univalent functions in . In this paper, we obtain the second Hankel determinant for certain classes of analytic bi-univalent function which are defined by ...
Kiu Shu Huey, Aini Janteng, Jaludin Janteng, Andy Liew Pik Hern   +3 more
openaire   +1 more source

Estimates for Coefficients of Bi-Univalent Functions Associated with a Fractional q-Difference Operator

, 2022
In the present paper, we discuss a class of bi-univalent analytic functions by applying a principle of differential subordinations and convolutions.
Kamsing Nonlaopon, Ebrahim Amini, Dumitru Baleanu, Shrideh Al-Omari   +3 more
core   +1 more source

Exploring Bi-Univalent Classes via q-Derivatives and Bivariate Fibonacci Polynomials

Mathematics
The q-calculus framework has emerged as a powerful tool in geometric function theory, enabling refined analysis of analytic and bi-univalent functions.
Aruna Mogarala Guruvaya, Basem Aref Frasin, Ibtisam Aldawish, Sondekola Rudra Swamy   +3 more
doaj   +1 more source

On a subclass of analytic functions involving harmonic means

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015
In the present paper, we consider a generalised subclass of analytic functions involving arithmetic, geometric and harmonic means. For this function class we obtain an inclusion result, Fekete-Szegö inequality and coefficient bounds for bi-univalent ...
Tudor Andreea-Elena, Rǎducanu Dorina
doaj   +1 more source

Euler Polynomials and Bi-univalent Functions

European Journal of Pure and Applied Mathematics
Our research introduces new subclasses of analytical functions that are defined by Euler polynomials. We then proceed to estimate the Fekete-Szego functional problem and the Maclaurin coefficients for this specific subfamily, denoted as |a2| and |a3|. Furthermore, we demonstrate several new results that emerge when we specialize the parameters used in ...
Ala Amourah, Dunia Jarwan, Jamal Salah, M. J. Mohammed, S. A. Meqdad, Nidal Anakira   +5 more
openaire   +1 more source

New classes of analytic and bi-univalent functions

AIMS Mathematics, 2021
<abstract><p>Using the (p, q)-derivative operator we introduce new subclasses of analytic and bi-univalent functions, we obtain estimates on coefficients and the Fekete-Szegö functional.</p></abstract>
openaire   +2 more sources

Evaluating the (comparative) safety profile of the novel oral polio vaccine type 2 using individual case safety reports in VigiBase

British Journal of Clinical Pharmacology, EarlyView.
Aim Novel oral polio vaccine type 2 (nOPV2) was used under the WHO emergency use listing for circulating vaccine‐derived polio virus (cVDPV) outbreaks from 2021 to 2023. We assessed nOPV2 adverse events following immunization (AEFIs) and compared its safety profile to other vaccines using VigiBase.
Comfort Kunak Ogar, Malede Mequanent Sisay, Leonardo Roque‐Pereira, Christine Leopold, Patrick C. Souverein, Aukje K. Mantel‐Teeuwisse, Marie L. De Bruin   +6 more
wiley   +1 more source

Coefficient Estimates for a Subclass of Bi-univalent Functions

Communications on Advanced Computational Science with Applications, 2015
In this paper, we consider a subclass $S_{\Sigma}(\alpha,\beta)$ of bi-univalent functions defined in the open unit disk $D=\lbrace z\in\mathbb{C}:|z|< 1\rbrace$. Besides, we find upper bounds for the second and third coefficients for functions in this subclass.
S. Azizi, A. Ebadian, Sh. Najafzadeh
openaire   +1 more source

Carbon‐Based Electrodes for Sodium‐Ion Batteries: Material Design, Electrochemical Performance, and Challenges

Carbon and Hydrogen, EarlyView.
Carbon‐based electrodes, including graphite, graphene, and CNT composites, are promising candidates for sodium‐ion batteries due to their stability, conductivity, and abundance. Their electrochemical performance, key limitations, and strategies for improving practical SIB applications are highlighted.
Talha Munir, Rizwan Asghar, Mehboob Ur Rahman, Zaima Afzal   +3 more
wiley   +1 more source