The Distortion Theorems for Harmonic Mappings with Negative Coefficient Analytic Parts

The Distortion Theorems for Harmonic Mappings with Negative Coefficient Analytic Parts

Year:    2016

Author:    Mengkun Zhu, Xinzhong Huang

Journal of Mathematical Study, Vol. 49 (2016), Iss. 1 : pp. 23–32

Abstract

Some sharp estimates for coefficients, distortion and the growth order are obtained for harmonic mappings $f \in TL^{\alpha}_H,$ which are locally univalent harmonic mappings in the unit disk $\mathbb{D}:=\{z:|z|<1\}.$ Moreover, denoting the subclass $TS^{\alpha}_H$ of the normalized univalent harmonic mappings, we also estimate the growth of $|f|,$ $f \in TS^α_H,$ and their covering theorems.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/jms.v49n1.16.03

Journal of Mathematical Study, Vol. 49 (2016), Iss. 1 : pp. 23–32

Published online:    2016-01

AMS Subject Headings:   

Copyright:    COPYRIGHT: © Global Science Press

Pages:    10

Keywords:    Harmonic mapping coefficient estimate distortion theorem covering problem.

Author Details

Mengkun Zhu

Xinzhong Huang