Some Properties of a Generalized Class of Analytic Functions Related with Janowski Functions

We define a class T̃k [A, B, α, ρ] of analytic functions by using Janowski’s functions which generalizes a number of classes studied earlier such as the class of strongly close-to-convex functions. Some properties of this class, including arc length, coefficient problems, and a distortion result, ar...

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Main Authors: M. Arif, K. I. Noor, M. Raza, W. Haq
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:Abstract and Applied Analysis
Online Access:http://dx.doi.org/10.1155/2012/279843
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author M. Arif
K. I. Noor
M. Raza
W. Haq
author_facet M. Arif
K. I. Noor
M. Raza
W. Haq
author_sort M. Arif
collection DOAJ
description We define a class T̃k [A, B, α, ρ] of analytic functions by using Janowski’s functions which generalizes a number of classes studied earlier such as the class of strongly close-to-convex functions. Some properties of this class, including arc length, coefficient problems, and a distortion result, are investigated. We also discuss the growth of Hankel determinant problem.
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publishDate 2012-01-01
publisher Wiley
record_format Article
series Abstract and Applied Analysis
spelling doaj-art-c2486c1d44fc41b8a8087d68b14c1e8f2025-08-20T02:19:02ZengWileyAbstract and Applied Analysis1085-33751687-04092012-01-01201210.1155/2012/279843279843Some Properties of a Generalized Class of Analytic Functions Related with Janowski FunctionsM. Arif0K. I. Noor1M. Raza2W. Haq3Department of Mathematics, Abdul Wali Khan University, 23200 Mardan, PakistanDepartment of Mathematics, COMSATS Institute of Information Technology, 44000 Islamabad, PakistanDepartment of Mathematics, GC University, 38000 Faisalabad, PakistanDepartment of Mathematics, Abdul Wali Khan University, 23200 Mardan, PakistanWe define a class T̃k [A, B, α, ρ] of analytic functions by using Janowski’s functions which generalizes a number of classes studied earlier such as the class of strongly close-to-convex functions. Some properties of this class, including arc length, coefficient problems, and a distortion result, are investigated. We also discuss the growth of Hankel determinant problem.http://dx.doi.org/10.1155/2012/279843
spellingShingle M. Arif
K. I. Noor
M. Raza
W. Haq
Some Properties of a Generalized Class of Analytic Functions Related with Janowski Functions
Abstract and Applied Analysis
title Some Properties of a Generalized Class of Analytic Functions Related with Janowski Functions
title_full Some Properties of a Generalized Class of Analytic Functions Related with Janowski Functions
title_fullStr Some Properties of a Generalized Class of Analytic Functions Related with Janowski Functions
title_full_unstemmed Some Properties of a Generalized Class of Analytic Functions Related with Janowski Functions
title_short Some Properties of a Generalized Class of Analytic Functions Related with Janowski Functions
title_sort some properties of a generalized class of analytic functions related with janowski functions
url http://dx.doi.org/10.1155/2012/279843
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