Title of article :
Bi-concave Functions Defined by Al-Oboudi Differential Operator
Author/Authors :
Altinkaya ، Sahsene Department of Mathematics - Beykent University
Abstract :
The purpose of the present paper is to introduce a class D^n Σ;δ C0(α) of bi-concave functions defined by Al-Oboudi differential operator. We find estimates on the Taylor-Maclaurin coefficients |a2| and |a3| for functions in this class. Several consequences of these results are also pointed out in the form of corollaries.
Keywords :
Bi , concave functions , Al , Oboudi differential operator , Coefficient estimates
Journal title :
Iranian Journal of Mathematical Sciences and Informatics (IJMSI)
Journal title :
Iranian Journal of Mathematical Sciences and Informatics (IJMSI)
