Starlike cases of the generalized goodman conjecture

被引:1
作者
Avkhadiev F.G. [1 ]
Wirths K.-J. [2 ]
机构
[1] Depart. of Mech. and Math., Kazan Federal University
[2] Institut für Analysis and Algebra, TU Braunschweig
基金
俄罗斯基础研究基金会;
关键词
Starlike meromorphic function; subordination;
D O I
10.1134/S1995080213020029
中图分类号
学科分类号
摘要
We consider functions f that are meromorphic and univalent in the unit disc D with a simple pole at the point p ∈ (0, 1) and normalized by f(0) = f′(0) - 1 = 0. A function g is called subordinated under such a function f, if there exists a function ω holomorphic in D, ω(D) ⊂ D̄, such that g(z) = f(zω(z)), z ∈ D, and we use the abbreviation g ≺ f to indicate this relationship between two functions. We conjectured that for g ≺ f, the inequalities are valid. Here f is as above and the expansion is valid in some neighbourhod of the origin. In the present article, we prove that this is true for two classes of functions f for which C̄f(D) is starlike. © 2013 Pleiades Publishing, Ltd.
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页码:142 / 147
页数:5
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