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由微分从属和卷积定义的解析函数类的包含性质

2016-04-23都俊杰秦川邹发伟等

关键词:卷积

都俊杰 秦川 邹发伟等

摘 要 本文由微分从属和卷积定义了在单位圆盘U={z∈C:|z|<1}内的三类单叶解析函数类Pa1,…,aq;b1,…,bs(μ,h,λ),Ta1,…,aq;b1,…,bs(μ,h,α),Ra1,…,aq;b1,…,bs(μ,h,α),并利用从属性质和凸函数的理论,研究得到了它们的包含关系.

关键词 从属;卷积;包含性质;星象函数;凸函数

中图分类号 O17451文献标识码 A文章编号 10002537(2016)02007705

Inclusion Properties for Subclasses of Analytic Functions

Defined by Differential Subordination and Convolution

DU Junjie1*, QIN Chuan1, ZOU Fawei1, LI Xiaofei2,3

(1.College of Engineering and Technology, Yangtze University, Jingzhou 434020, China;

2.School of Information and Mathematics, Yangtze University, Jingzhou 434020, China;

3.College of Science and Technology, University of Macau, Macau, 519040, China)

Abstract In this article, we define three subclasses of analytic functions Pa1,…,aq;b1,…,bs(μ,h,λ),Ta1,…,aq;b1,…,bs(μ,h,α),Ra1,…,aq;b1,…,bs(μ,h,α) by using of differential subordination and convolution in the open disc U={z∈C:|z|<1}. Inclusion properties of these subclasses are obtained by employing properties of subordination and theories of convex functions.

Key words subordination; convolution; inclusion properties; starlike function; convex function

设A表示单位圆盘U={z∈C:|z|<1}内具有泰勒展开式f(z)=z+∑∞n=2anzn的单叶解析函数族. f(z),g(z)在U内解析,称f从属于g,记作f

(x)n=Γ(x+n)Γ(x)=1, (n=0,x∈C\{0}),

x(x+1)…(x+n-1),(n∈N,x∈C).

记N表示由单位圆盘U内的单叶解析凸的函数h(z)组成的正实部函数类,即满足Re{h(z)}>0.Ozkan和Altintas[1]定义了下面的函数类:

参考文献:

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[2] TROJNARSPELINA L. On certain applications of the Hadamard product [J]. Appl Math Comput, 2008, 199(4):653662.

[3] ELASHWAH R M, AOUF M K, ABDELTWAB A M. On certain classes of pvalent functions invoving DziokSrivastava operator [J]. Acta Univ Apulensis, 2013,35(2):203210.

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[7] 刘竟成,张学军. Cn中单位球上Bergman型空间的一种积分算子[J].数学年刊A辑, 2013,34(3):257268.

[8] 李小飞,严 证.某类积分算子解析函数的性质[J].湖南师范大学自然科学学报, 2013,36(4):1115.

[9] 田 琳,韩红伟.算子解析函数的系数不等式[J].数学的实践与认识, 2014,44(18):239245.

[10] 高松云,刘名生.用算子Iδ,λ,lp,α,β定义的多叶解析函数子类的性质[J].华南师范大学学报:自然科学版, 2013,45(5):1922.

[11] MILLER S S, MOCANU P T. Differential subordinations: theory and applications, series on monographs and textbooks in pure and applied mathematics [M]. New York: Marcel Dekker Incorporation, 2000.

[12] RUSCHEWEYH S. Convolutions in geometric function theory [M]. Montreal: Les Presses de lUniversite de Montreal, 1982.

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(编辑 HWJ)

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