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Coefficient estimates and Fekete-Szegö inequality for a class of analytic functions satisfying subordinate condition associated with Chebyshev polynomials Cover

Coefficient estimates and Fekete-Szegö inequality for a class of analytic functions satisfying subordinate condition associated with Chebyshev polynomials

Open Access
|Feb 2020

Abstract

In this paper, we define a class of analytic functions, ℱ(ℋ, α, δ, µ), satisfying the following condition

(α[zf(z)f(z)]δ+(1-α)[zf(z)f(z)]μ[1+zf(z)f(z)]1-μ)𝒣(z,t),\left( {\alpha {{\left[ {{{{\rm{zf'}}({\rm{z}})} \over {{\rm{f}}(z)}}} \right]}^\delta } + (1 - \alpha ){{\left[ {{{{\rm{zf'}}\left( {\rm{z}} \right)} \over {{\rm{f}}(z)}}} \right]}^\mu }{{\left[ {1 + {{{\rm{zf''}}({\rm{z}})} \over {{\rm{f'}}({\rm{z}})}}} \right]}^{1 - \mu }}} \right)\,\, \prec \mathcal{H}({\rm{z}},{\rm{t}}),

where α ∈ [0, 1], δ ∈ [1, 2] and µ ∈ [0, 1].

We give coefficient estimates and Fekete-Szegö inequality for this class.

Language: English
Page range: 430 - 436
Submitted on: May 21, 2019
|
Published on: Feb 27, 2020
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year

© 2020 Eszter Szatmari, Şahsene Altinkaya, published by Sapientia Hungarian University of Transylvania
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.