Výsledky vyhledávání - "BULUT, SERAP"

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Comprehensive subclsses of analytic functions and coefficient bounds

Autor: Bulut, Serap

In this paper, we introduce two general subclasses of analytic functions by means of the principle of subordination and investigate the coefficient bounds for functions in theese classes. The well-known results are obtained as a corollary of our main

Externí odkaz: http://arxiv.org/abs/1903.09303

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On the Fekete-Szeg\'o problem associated with Libera type close-to-convex functions

Autor: Bulut, Serap

The main purpose of this paper is to introduce a new comprehensive subclass of analytic close-to-convex functions and derive Fekete-Szeg\"o inequalities for functions belonging to this new class by using a different way. Various known special cases o

Externí odkaz: http://arxiv.org/abs/1903.03037

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Coefficient bounds for close-to-convex functions associated with vertical strip domain

Autor: Bulut, Serap

By considering a certain univalent function in the open unit disk U, that maps U onto a strip domain, we introduce a new class of analytic and close-to-convex functions by means of a certain non-homogeneous Cauchy-Euler-type differential equation. We

Externí odkaz: http://arxiv.org/abs/1902.06259

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Certain properties of a new subclass of analytic and p-valently close-to-convex functions

Autor: Bulut, Serap

In the present paper we introduce and investigate an interesting subclass K_{s}^{(k)}({\gamma},p) of analytic and p-valently close-to-convex functions in the open unit disk U. For functions belonging to this class, we derive several properties as the

Externí odkaz: http://arxiv.org/abs/1612.08735

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Akademický článek

Coefficient estimates for families of bi-univalent functions defined by Ruscheweyh derivative operator

Autor: Bulut Serap, Kareem Wanas Abbas

Publikováno v: Mathematica Moravica, Vol 25, Iss 1, Pp 71-80 (2021)

The main purpose of this manuscript is to find upper bounds for the second and third Taylor-Maclaurin coefficients for two families of holomorphic and bi-univalent functions associated with Ruscheweyh derivative operator. Further, we point out certai

Externí odkaz: https://doaj.org/article/5d54329472fd45f4b1248ed7b06d3cb4