نتایج جستجو برای: fekete szegö problem

تعداد نتایج: 880897  

Journal: :International Journal of Mathematics and Mathematical Sciences 2000

2014
HALIT ORHAN H. Orhan

In the present investigation we solve Fekete–Szegö problem for the generalized linear differential operator. In particular, our theorems contain corresponding results for various subclasses of strongly starlike and strongly convex functions.

Journal: :Int. J. Math. Mathematical Sciences 2011
Toshio Hayami Shigeyoshi Owa

For p-valently Janowski starlike and convex functions defined by applying subordination for the generalized Janowski function, the sharp upper bounds of a functional |a p2 − μa 2 p1 | related to the Fekete-Szegö problem are given.

Journal: :Journal of the Mathematical Society of Japan 2007

In the field of Geometric Function Theory, one can not deny the importance of analytic and univalent functions. The characteristics of these functions including their taylor series expansion, their coefficients in these representations as well as their associated functional inequalities have always attracted the researchers. In particular, Fekete-Szegö inequality is one of such vastly studied a...

Journal: :Journal of Mathematical Analysis and Applications 2011

2012
Halit Orhan Erhan Deniz Murat Çağlar H. Orhan E. Deniz M. Çağlar

Abstract. In this present investigation, authors introduce certain subclasses of starlike and convex functions of complex order b, using a linear multiplier differential operator D λ,μf(z). In this paper, for these classes the Fekete–Szegö problem is completely solved. Various new special cases of our results are also pointed out.

2008
Dorina Răducanu

In this paper we obtain the Fekete-Szegö inequality for a class of analytic functions f(z) defined in the open unit disk for which

Journal: :Bitlis Eren üniversitesi fen bilimleri dergisi 2023

In this study, we introduce and examine a certain subclass of analytic functions in the open unit disk complex plane. Here, give coefficient bound estimates investigate Fekete-Szegö problem for introduced class. Some interesting special cases results obtained here are also discussed.

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