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      由微分從屬和卷積定義的解析函數(shù)類的包含性質(zhì)

      2016-04-23 10:41:55都俊杰秦川鄒發(fā)偉等
      關(guān)鍵詞:卷積

      都俊杰 秦川 鄒發(fā)偉等

      摘 要 本文由微分從屬和卷積定義了在單位圓盤U={z∈C:|z|<1}內(nèi)的三類單葉解析函數(shù)類Pa1,…,aq;b1,…,bs(μ,h,λ),Ta1,…,aq;b1,…,bs(μ,h,α),Ra1,…,aq;b1,…,bs(μ,h,α),并利用從屬性質(zhì)和凸函數(shù)的理論,研究得到了它們的包含關(guān)系.

      關(guān)鍵詞 從屬;卷積;包含性質(zhì);星象函數(shù);凸函數(shù)

      中圖分類號 O17451文獻標(biāo)識碼 A文章編號 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

      設(shè)A表示單位圓盤U={z∈C:|z|<1}內(nèi)具有泰勒展開式f(z)=z+∑∞n=2anzn的單葉解析函數(shù)族. f(z),g(z)在U內(nèi)解析,稱f從屬于g,記作f

      (x)n=Γ(x+n)Γ(x)=1, (n=0,x∈C\{0}),

      x(x+1)…(x+n-1),(n∈N,x∈C).

      記N表示由單位圓盤U內(nèi)的單葉解析凸的函數(shù)h(z)組成的正實部函數(shù)類,即滿足Re{h(z)}>0.Ozkan和Altintas[1]定義了下面的函數(shù)類:

      參考文獻:

      [1] OZKAN O, ALTNTAS O. Applications of differential subordination [J]. Appl Math Lett, 2006,19(3):728734.

      [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.

      [4] XU Q H, XIAO H G, SRIVASTAVA H M. Some applications of differential subordination and the DziokSrivastava convolution operator [J]. Appl Math Comput, 2014, 230(3):496508.

      [5] SEOUDY T M, AOUF M K. Inclusion properties for some subclasses of analytic functions associated with generalized integral operator [J]. J Egypt Math Soc, 2013,21(3):1115.

      [6] KWON O S, CHO N E. Inclusion properties for certain subclasses of analytic functions associated with the DziokSrivastava operator [J]. J Inequal Appl, 2007,35(4):110.

      [7] 劉竟成,張學(xué)軍. Cn中單位球上Bergman型空間的一種積分算子[J].數(shù)學(xué)年刊A輯, 2013,34(3):257268.

      [8] 李小飛,嚴(yán) 證.某類積分算子解析函數(shù)的性質(zhì)[J].湖南師范大學(xué)自然科學(xué)學(xué)報, 2013,36(4):1115.

      [9] 田 琳,韓紅偉.算子解析函數(shù)的系數(shù)不等式[J].數(shù)學(xué)的實踐與認(rèn)識, 2014,44(18):239245.

      [10] 高松云,劉名生.用算子Iδ,λ,lp,α,β定義的多葉解析函數(shù)子類的性質(zhì)[J].華南師范大學(xué)學(xué)報:自然科學(xué)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.

      [13] RUSCHEWEYH S, SHEILSMALL T. Hadamard product of schlicht functions and the polyaschoenberg conjecture [J].Comment Math Helv, 1973,48(4):119135.

      (編輯 HWJ)

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