Coefficient Related Problem Studies for New Subclass of Bi-Univalent Functions Defined by(s,t)-Derivative Operator and Quasi-Subordination  

作　　者：En AO Shuhai LI Huo TANG 

机构地区：[1]Collage of Afathematics and Computer Science,Chifeng University,Inner Mongolia 024000,P.R.China

出　　处：《Journal of Mathematical Research with Applications》2021年第6期579-593,共15页数学研究及应用（英文版）

基　　金：Supported by the Natural Science Foundation of Inner Mongolia Autonomous Region(Grant No.2020MS01010);the Higher-School Science Foundation of Inner Mongolia Autonomous Region(Grant No.NJZY19211).

摘　　要：In this paper we introduce and investigate a new generalized class of bi-univalent functions defined by using(s,t)-derivative operator and quasi-subordination.We obtain the estimates of the first two coefficients|a2|,|a3|and general coefficient|an|(n≥4)by using Faber polynomial expansion for the new class and some of its subclasses.And then we solve Fekete-Szegoprobelm for the newly defined classes.

关 键 词：bi-univalent function (s t)-derivative quasi-subordination coefficient estimate Fekete-Szegoproblem Faber polynomial expansion 

分 类 号：O174[理学—数学]