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On Certain Generalized Bazilevic type Functions Associated with Conic Regions

Journal: Sahand Communications in Mathematical Analysis (Vol.17, No. 4)

Publication Date:

Authors : ; ;

Page : 13-23

Keywords : Conic regions; Bazilevic function; Bounded boundary rotation; Hankel determinant; Univalent functions;

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Abstract

Let $f$ and $g$ be analytic in the open unit disc and, for $alpha ,$ $beta geq 0$, let begin{align*} Jleft( alpha ,beta ,f,gright) & =frac{zf^{prime }(z)}{f^{1-alpha }(z)g^{alpha }(z)}+beta left( 1+frac{zf^{prime prime }(z)}{f^{prime }(z)}right) -beta left( 1-alpha right) frac{zf^{prime }(z)}{f(z)} & quad -alpha beta frac{zg^{prime }(z)}{g(z)}text{.} end{align*} The main aim of this paper is to study the class of analytic functions which map $Jleft( alpha ,beta ,f,gright) $ onto conic regions. Several interesting problems such as arc length, inclusion relationship, rate of growth of coefficient and Growth rate of Hankel determinant will be discussed.

Last modified: 2021-11-03 14:29:36