期刊名称:International Journal of Mathematics and Mathematical Sciences
印刷版ISSN:0161-1712
电子版ISSN:1687-0425
出版年度:2000
卷号:24
期号:9
页码:577-581
DOI:10.1155/S0161171200005111
出版社:Hindawi Publishing Corporation
摘要:
Let f ( z ) = z + a 2 z 2 + a 3 z 3 + ⋯ be an analytic function in the open unit disk. A sharp upper bound is obtained for | a 3 − μ a 2 2 | by using the classes of strongly starlike functions of order β and type α when μ ≥ 1 .