Vol. 231, No. 1, 2007

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An absolute estimate of the homogeneous expansions of holomorphic mappings

Taishun Liu and Jianfei Wang

Vol. 231 (2007), No. 1, 155–166
Abstract

Let f : Ω Ω be a holomorphic mapping, where Ω is one of the four classical domains in Cm×n. We show that, if P = f(0), we have

 ∞∑  ∥DφP-(P)[Dkf-(0)(Zk-)]∥Ω-
k!∥DφP (P)∥      < 1
k=0

for ZΩ < 1
3 and φP in Aut Ω such that φP(P) = 0. This generalizes to higher dimensions a classical result of Bohr, which corresponds to the case Ω = {z : |z| < 1}⊂ C. The constant 1
3 is the best possible.

Keywords

holomorphic mapping, homogeneous expansion, classical domains, Bohr's theorem

Mathematical Subject Classification

Primary: 30H05

Secondary: 32A05

Milestones

Received: 23 December 2005
Revised: 25 September 2006
Accepted: 26 October 2006

Authors
Taishun Liu
Department of Mathematics
Huzhou Teachers College
Huzhou, Zhejiang, 313000
China
Jianfei Wang
Department of Mathematics
University of Science and Technology of China
Hefei, Anhui, 230026
China