Title of article :
SECOND HANKEL DETERMINANT FOR A CERTAIN SUBCLASS OF ANALYTIC AND BI-UNIVALENT FUNCTIONS
Author/Authors :
FRASIN, B.A. Al al-Bayt University - Department of Mathematics, Jordan , VIJAYA, K. VIT University - School of Advanced Sciences, India , KASTHURI, M. VIT University - School of Advanced Sciences, India
Abstract :
In the present paper, we consider a subclass of the function class Σ of bi-univalent analytic functions in the open unit disk Δ and we obtain the functional |a2a4 - a23| for the function class. Also we give upper bounds for |a2a4 - a23 |: Our result gives corresponding |a2a4 - a23 | for the subclasses of Σ defined in the literature.
Keywords :
Univalent functions , analytic functions , Bi , univalent functions , coefficient bounds , Hankel determinant
Journal title :
TWMS Journal of Pure and Applied Mathematics
Journal title :
TWMS Journal of Pure and Applied Mathematics
