数学物理学报 ›› 2014, Vol. 34 ›› Issue (1): 150-156.

• 论文 • 上一篇    下一篇

从属解析函数族的有限阶哈达玛乘积

熊良鹏|刘晓丽   

  1. 成都理工大学工程技术学院 四川 乐山 614007
  • 收稿日期:2012-06-07 修回日期:2013-05-30 出版日期:2014-02-25 发布日期:2014-02-25
  • 基金资助:

    成都理工大学工程技术学院科研发展基金(C122010003)资助.

Hadamard Product of Finitely Order of Certain Class of Analytic Functions Defined by Subordination

 XIONG Liang-Peng, LIU Xiao-Li   

  1. School of Engineering Technology, Chengdu University of Technology, Sichuan Leshan 614007
  • Received:2012-06-07 Revised:2013-05-30 Online:2014-02-25 Published:2014-02-25
  • Supported by:

    成都理工大学工程技术学院科研发展基金(C122010003)资助.

摘要:

P[A, B]={f(z): f(z)<1+Az/1-Bz, A+B≠0, |B|≤1, f(z)在单位开圆盘内解析}. 定义函数族H 1H2, …, Hn的有限阶哈达玛乘积为H1*H2*H3*…*Hn(z)={f1*f2*f3*… fn(z): fi ∈Hi, i =1, 2, …, n, n ∈Z+}. 讨论并得到了P(A1, B1)*P(A2, B2)*P(A3, B3)*…*P(An, Bn)=P(X, Y)的充分必要条件, 主要结果是对先前相应研究内容的直接推广.

关键词: 解析函数, 从属, 哈达玛乘积, 充要条件

Abstract:

Let P(A, B) denote a class of analytic functions subordinated to the function 1+Az/1-Bz, where A+B≠0, |B|≤1. The Hadamard product of finitely order of certain classes H 1H2, …, Hn is defined by H1*H2*H3*…*Hn(z)={f1*f2*f3*… fn(z): fi ∈Hi, i =1, 2, …, n, n ∈Z+}. It obtains the necessary and sufficient conditions for equality P(A1, B1)*P(A2, B2)*P(A3, B3)*…*P(An, Bn)=P(X, Y), which extends the corresponding earlier results.

Key words: Analytic function, Hadamard product, Subordination, Necessary and sufficient conditions

中图分类号: 

  • 30C45