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- Mugur Acu, Yaşar Polatog̃lu, Emel Yavuz, Narendra Kumar K. Govil
- 2008

- YAŞAR POLATOĞLU
- 2002

The aim of this paper is to give a coefficient inequality for the class of analytic functions in the unit disc D = {z | |z| < 1}. 1. Introduction. Let Ω be the family of functions ω(z) regular in the disc D and satisfying the conditions ω(0) = 0 and |ω(z)| < 1 for z ∈ D.

- Yaşar Polatoğlu, Arzu Şen
- 2007

We give some results of Janowski λ-spirallike functions of complex order in the open unit disc D = {z : |z| < 1}. 2000 Mathematical Subject Classification: Primary 30C45.

- Yaşar Polatog̃lu, Emel Yavuz
- 2007

Let A be the class of functions f(z) of the form f(z) = z+a2z + · · · which are analytic in the open unit disc U = {z ∈ C||z| < 1}. In 1959 [5], K. Sakaguchi has considered the subclass of A consisting of those f(z) which satisfy Re ( zf ′(z) f(z)−f(−z) ) > 0, where z ∈ U. We call such a functions “Sakaguchi Functions”. Various authors have investigated… (More)

- Yasar Polatoglu, Metin Bolcal, Arzu Sen
- Int. J. Math. Mathematical Sciences
- 2004

We will give the relation between the class of Janowski starlike functions of complex order and the class of Janowski convex functions of complex order. As a corollary of this relation, we obtain the radius of starlikeness for the class of Janowski convex functions of complex order. 1. Introduction. Let F be the class of analytic functions in D = {z | |z| <… (More)

The aim of this paper is to give an investigation of the class of harmonic mappings related to the bounded boundary rotation. The class of bounded boundary rotation is generalized to the convex function. Mathematics Subject Classification: 30C45, 30C55

The projection on the base plane of a regular minimal surface S in R with isothermal parameters defines a complex-valued univalent harmonic function f = h(z) + g(z). The aim of this paper is to obtain the distortion inequalities for the Weierstrass-Enneper parameters of the minimal surface for the harmonic multivalent functions for which analytic part is an… (More)

- Yasar Polatoglu, Melike Aydogan, Yasemin Kahramaner
- Applied Mathematics and Computation
- 2015

- Melike Aydogan, Yasar Polatoglu, Yasemin Kahramaner
- Applied Mathematics and Computation
- 2015

- Melike Aydogan, Yasar Polatoglu
- J. Computational Applied Mathematics
- 2014