INITIAL COEFFICIENT ESTIMATES FOR SOME SUBCLASSES OF M-FOLD SYMMETRIC BI-UNIVALENT FUNCTIONS

作     者：H.M.SRIVASTAVA S.GABOURY F.GHANIM 

作者机构：Department of Mathematics and StatisticsUniversity of Victoria China Medical University Department of Mathematics and Computer ScienceUniversity of Québec at Chicoutimi Department of MathematicsCollege of SciencesUniversity of Sharjah 

出 版 物：《Acta Mathematica Scientia》 (数学物理学报（B辑英文版）)

年 卷 期：2016年第36卷第3期

页      面：863-871页

核心收录：

学科分类：07[理学] 070104[理学-应用数学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0701[理学-数学] 

主　　题：analytic functions bi-univalent functions m-Fold symmetric functions m-Fold symmetric bi-univalent functions 

摘      要：In the present investigation, we consider two new general subclasses B∑m（T, λ; α）and B^∑m （τ λ;β） of Em consisting of analytic and m-fold symmetric bi-univalent functions in the open unit disk U. For functions belonging to the two classes introduced here, we derive non-sharp estimates on the initial coefficients [a-~＋ll and │a2＋1│. Several connections to some of the earlier known results are also pointed out.