scholarly journals Meromorphic functions with positive coefficients

2006 ◽  
pp. 713-722
Author(s):  
O. Nasser ◽  
M. Darus
Keyword(s):  
Meromorphic Functions ◽  
Positive Coefficients

On certain class of meromorphic functions with positive coefficients

2012 ◽  
Vol 32 (4) ◽  
pp. 1376-1390 ◽  
Author(s):  
J. Dziok ◽  
G. Murugusundaramoorthy ◽  
J. Sokół
Keyword(s):  
Meromorphic Functions ◽  
Positive Coefficients

scholarly journals A note on meromorphic functions with positive coefficients associated wth Bessel function

2020 ◽  
Vol 8 (4) ◽  
pp. 1622-1628
Author(s):  
Deshmukh K.C. ◽  
Rajkumar N. Ingle ◽  
P. Thirupathi Reddy
Keyword(s):  
Bessel Function ◽  
Meromorphic Functions ◽  
Positive Coefficients

scholarly journals Certain Subclass of Meromorphic Functions with Positive Coefficients Defined by Bessel Function

2020 ◽  
pp. 124-129
Author(s):  
Santosh M. POPADE ◽  
Rajkumar N. INGLE ◽  
P. THIRUPATHI REDDY ◽  
B VENKATESWARLU
Keyword(s):  
Bessel Function ◽  
Meromorphic Functions ◽  
Positive Coefficients

scholarly journals CERTAIN CLASSES OF MEROMORPHIC FUNCTIONS WITH POSITIVE COEFFICIENTS

1994 ◽  
Vol 25 (3) ◽  
pp. 247-256
Author(s):  
NAK EUN CHO ◽  
JI A KIM
Keyword(s):  
Meromorphic Functions ◽  
Positive Coefficients ◽  
Class Of Functions

Let $\Sigma_p$ denote the class of functions of the form \[f(z)=\frac{a_{-1}}{z}+\sum_{k=1}^\infty a_kz^k \quad (a_k\ge 0, a_{-1}>0)\] which are analytic in the annulus $D =\{z |0< |z|<1\}$. Let $\Sigma_{p,1}$ and $\Sigma_{p,2}$ denote subclasses of $\Sigma_p$ satisfying $f(z_0)=1/z_0$ and $f'(z_0)=-1/z^2_0$ ($-1<z_0<1$, $z_0\neq 0$), respectively. Properties of certain subclasses of $\Sigma_{p,1}$ and $\Sigma_{p,2}$ are investigated and sharp results are obtained. Also a new characterization for certain subclass of $\Sigma_p$ is proved.

scholarly journals On certain meromorphic functions with positive coefficients

1993 ◽  
Vol 16 (2) ◽  
pp. 409-412 ◽  
Author(s):  
Young Chang Kim ◽  
Sang Hun Lee ◽  
Shigeyoshi Owa
Keyword(s):  
Meromorphic Functions ◽  
New Class ◽  
Positive Coefficients

In this paper, we introduce a new classTP(α)of meromorphic functions with positive coefficients inD={z:0<|z|<1}. The aim of the present paper is to prove some properties for the classTp(α).

scholarly journals On Harmonic Meromorphic Functions Associated with Basic Hypergeometric Functions

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Huda Al dweby ◽  
Maslina Darus
Keyword(s):  
Hypergeometric Functions ◽  
Meromorphic Functions ◽  
Extreme Points ◽  
Coefficient Inequality ◽  
Basic Hypergeometric Functions ◽  
Positive Coefficients

By making use of basic hypergeometric functions, a class of complex harmonic meromorphic functions with positive coefficients is introduced. We obtain some properties such as coefficient inequality, growth theorems, and extreme points.

On a certain classes of meromorphic functions with positive coefficients

2019 ◽  
Vol 34 (3) ◽  
pp. 253-260
Author(s):  
R. Asadi ◽  
A. Ebadian ◽  
S. Shams ◽  
Janusz Sokół
Keyword(s):  
Meromorphic Functions ◽  
Positive Coefficients
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