华侨大学学报(自然科学版)2012,Vol.33Issue(5):584-589,6.
调和映照的Landau定理
Landau Theorem for Planar Harmonic Mappings
摘要
Abstract
In this paper* we study Landau theorem and the univalence radius for harmonic mappings in the plane. Combining Koebe theorem of bounded univalent functions and Schwarz lemma of harmonic mappings, we obtain an asymptotically sharp estimate of Landau constant for a harmonic mapping. Our results improve the ones recently gotten by H. H. Chen and P. M. Gauthier.关键词
调和映照/Landau定理/Bloch常数/单叶函数Key words
Harmonic mapping/ Landau theorem/ Bloch constant/ univalent function分类
数理科学引用本文复制引用
李东征,陈行堤..调和映照的Landau定理[J].华侨大学学报(自然科学版),2012,33(5):584-589,6.基金项目
国家自然科学基金资助项目(11101165) (11101165)
福建省自然科学基金资助项目(2011J01011) (2011J01011)
中央高校基本科研业务费专项基金资助项目,华侨大学基本科研专项基金资助项目(JB-ZR1136) (JB-ZR1136)