Some starlikeness criterions for analytic functions

JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS

卷:335

Article

Zhu, Yucan

关键词: differential subordination;    starlike function;    convex function;   

DOI  :  10.1016/j.jmaa.2005.05.081

来源: Elsevier

【 摘 要 】

We determine a condition on M, alpha, lambda and mu for which [Graphics] implies f is an element of S-n(*)(lambda), where S-n(*)(lambda) is the set of starlike functions of order lambda. We also give some application of them. Some results of Mocanu and Ponnusamy are improved. We also obtain some new results on starlikeness criterions. (c) 2007 Elsevier Inc. All rights reserved.

【 授权许可】

Free