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一类双调和映照的单叶半径估计

DOI: 10.11830/ISSN.1000-5013.2011.02.0218

Keywords: Landau定理, 双调和映照, 线性复算子, 单叶半径

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Abstract:

若F为单位圆D={z||z|<1}上的双调和映照,L=z?狳?z--z?狳?z-,即L是一个线性复算子.利用单位圆上有界调和函数的系数估计不等式,对双调和映照L(F)的单叶半径进行估计,所得到的结果优于Chen和Ponnusamy等的结果.

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