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Coefficient Estimates for Starlike and Convex Classes of -fold Symmetric Bi-univalent Functions

机译:对称对称单价函数的星形和凸类的系数估计

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In an article of Pommerenke [10] he remarked that, for an -fold symmetric functions in the class , the well known lemma stated by Caratheodary for a one fold symmetric functions in still holds good. Exploiting this concept, we introduce certain new subclasses of the bi-univalent function class in which both and are -fold symmetric analytic with their derivatives in the class of analytic functions. Furthermore, for functions in each of the subclasses introduced in this paper, we obtain the coefficient bounds for and We remark here that the concept of -fold symmetric bi-univalent is not in the literature and the authors hope it will make the researchers interested in these type of investigations in the forseeable future. By the working procedure and the difficulty involved in these procedures, one can clearly conclude that there lies an unpredictability in finding the coefficients of a -fold symmetric bi-univalent functions.
机译:在Pommerenke [10]的一篇文章中,他指出,对于该类中的一个对称函数,Caratheodary针对一个对称函数提出的众所周知的引理仍然成立。利用这一概念,我们引入了双单价函数类的某些新的子类,其中和都是对称分析的对称形式,并且它们的派生形式都属于分析函数类。此外,对于本文介绍的每个子类中的函数,我们获得的系数界,我们在此指出,-折叠对称双单价的概念不在文献中,作者希望它能引起研究人员的兴趣。在可预见的将来进行这类调查。通过工作程序和这些程序所涉及的困难,可以清楚地得出结论,寻找对称的一元对称二价函数的系数存在不可预测性。

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