Coefficient bounds for a new class of univalent functions involving Salagean operator and the modified Sigmoid function
نویسندگان
چکیده مقاله:
We define a new subclass of univalent function based on Salagean differential operator and obtained the initial Taylor coefficients using the techniques of Briot-Bouquet differential subordination in association with the modified sigmoid function. Further we obtain the classical Fekete-Szego inequality results.
منابع مشابه
A new class of Salagean-type harmonic univalent functions
and Applied Analysis 3 2. Preliminaries A continuous function f u iv is a complex-valued harmonic function in a domain D ⊂ if both u and v are real harmonic in D. In any simply connected domain, we can write
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Article history: Received 23 April 2013 Accepted after revision 21 May 2013 Available online 30 May 2013 Presented by the Editorial Board Applying the Faber polynomial coefficient expansions to a class of meromorphic biunivalent functions, we obtain the general coefficient estimates for such functions and also examine their early coefficient bounds. A function univalent in the open unit disk is...
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عنوان ژورنال
دوره 9 شماره 2
صفحات 59- 69
تاریخ انتشار 2018-12-10
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