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A Remark on the Generalized Roper-Suffridge Extension Operator for Almost Stalike Mappings of Order α
作者姓名:LIU  Xiao-song~  FENG  Shu-xia~
作者单位:1.School of Mathematics and Computation Science,Zhanjiang Normal University,Zhanjiang 524048,China; 2.College of Mathematics and Information Science,Henan University,Kaifeng 475001,China
基金项目:Supported by the National Natural Science Foundation of China(10626015,10571044),Supported by the Guangdong Natural Science Foundation(06301315),Supported by the Doctoral Foundation of Zhanjiang Normal University(Z0420),Supported by the Natural Science Foundation of Henan University(XK03YBSX200)
摘    要:Suppose f is an almost starlike function of orderαon the unit disk D.In this paper,we will prove thatΦ_(n,β_2,γ_2,…,β_n,γ_n)(f)(z)=(f(z_1),((f(z_1)/z_1))~β_2(f′(z_1))~(γ_2)z_2,…, ((f(z_1)/z_1))~(β_n)(f′(z_1))~(γ_n)z_n)′preserves almost starlikeness of orderαonΩ_(n,p_1,p_2,…,p_n)={z= (z_1,z_2,…,z_n)′∈C~n:(sum from j=1 to n)|z_j|~(p_j)<1},where 0
关 键 词:almost  starlike  mapping  of  orderα  starlike  mapping  generalized  Roper-Suffridge  extension  operator
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