Subclass of m-quasiconformal harmonic functions in association with Janowski starlike functions

被引:6
|
作者
Sakar, F. M. [1 ]
Aydogan, M. [2 ]
机构
[1] Dicle Univ, Dept Math, Diyarbakir, Turkey
[2] Isik Univ, Dept Math, Campus Sile, Sile, Turkey
关键词
Starlike functions; Harmonic mapping; Distortion theorem; Growth theorem; Convex combination; Convolution properties; MAPPINGS; CONVEX;
D O I
10.1016/j.amc.2017.05.013
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Let's take f(z) = h (z) + <(g(z))over bar> which is an univalent sense-preserving harmonic functions in open unit disc D = {z : vertical bar z vertical bar < 1}. If f (z) fulfills vertical bar w(z)vertical bar = |g'(z)/h'(z)vertical bar < m, where 0 <= m < 1, then f(z) is known m-quasiconformal harmonic function in the unit disc (Kalaj, 2010) [8]. This class is represented by S-H(m). The goal of this study is to introduce certain features of the solution for non- linear partial differential equation <(f)over bar>((z) over bar) = w(z)f(z) when vertical bar w(z)vertical bar < m, w(z) (sic) m(2)(b(1)-z)/m(2)-b(1)z, h(z) is an element of S*(A, B). In such case S*(A, B) is known to be the class for Janowski starlike functions. We will investigate growth theorems, distortion theorems, jacobian bounds and coefficient ineqaulities, convex combination and convolution properties for this subclass. (C) 2017 Published by Elsevier Inc.
引用
收藏
页码:461 / 468
页数:8
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