Results 1 to 10 of about 60 (60)

Conformable differential operators for meromorphically multivalent functions

open access: yesConcrete Operators, 2021
We define a conformable diff-integral operator for a class of meromorphically multivalent functions. We show that this conformable operator adheres to the semigroup property.
Ibrahim Rabha W.   +2 more
doaj   +1 more source

Harmonic mappings and its directional convexity [PDF]

open access: yes, 2021
For any $\mu _{j}\ (\mu _{j}\in \mathbb{C},\left\vert \mu _{j}\right\vert=1,j=1,2)$, we consider the rotations $f_{\mu _{1}}$ and $F_{\mu _{2}}$ ofright half-plane harmonic mappings $f,F\in S_{\mathcal{H}}$ which are CHDwith the prescribed dilatations ...
Omendra MISHRA, Omendra MISHRA   +1 more
core   +1 more source

Some properties of a new subclass of analytic univalent functions defined by multiplier transformation [PDF]

open access: yes, 2019
The purpose of the present paper is to study the integral operator of the form ∫z0{Inμf(t)t}δdt where $f$ belongs to the subclass $C(n,\alpha,\beta, \mu)$ and $\delta$ is a real number.
SINGH, Surya Pratap, PORWAL, Saurabh
core   +1 more source

Extreme points and support points of conformal mappings

open access: yesOpen Mathematics, 2019
There are three types of results in this paper. The first, extending a representation theorem on a conformal mapping that omits two values of equal modulus. This was due to Brickman and Wilken.
Peretz Ronen
doaj   +1 more source

Second Hankel determinant for a class of analytic functions defined by q-derivative operator

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
In this paper, we obtain the estimates for the second Hankel determinant for a class of analytic functions defined by q-derivative operator and subordinate to an analytic function.
Răducanu Dorina
doaj   +1 more source

The Relationships Between p−valent Functions and Univalent Functions

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015
In this paper, we obtain some sufficient conditions for general p−valent integral operators to be the p−th power of a univalent functions in the open unit disk.
Çağlar Murat
doaj   +1 more source

Meromorphic functions with small Schwarzian derivative [PDF]

open access: yes, 2018
We consider the family of all meromorphic functions f of the form f (z) = 1 + b + b z + b z2 + · · ·  z  0  1   2 analytic and locally univalent in the puncture disk D0 := {z ∈ C : 0 < |z| < 1}.
SAHOO, Swadesh Kumar, ARORA, Vibhuti
core   +1 more source

Quasiconformal harmonic mappings and close-to-convex domains

open access: yes, 2010
Let f = h + ? be a univalent sense preserving harmonic mapping of the unit disk U onto a convex domain ?. It is proved that: for every a such that |a| < 1 (resp. |a| = 1) the mapping ?a = h + a?
David Kalaj
core   +1 more source

Symmetric Toeplitz Determinants for Classes Defined by Post Quantum Operators Subordinated to the Limaçon Function [PDF]

open access: yes
The present extensive study is focused to find estimates for the upper bounds of the Toeplitz determinants. The logarithmic coefficients of univalent functions play an important role in different estimates in the theory of univalent functions, and in ...
SANGARAMBADI PADMANABHAN, Vijayalakshmi   +2 more
core   +1 more source

Some Distortion Theorems for Starlike Harmonic Functions [PDF]

open access: yes, 2010
MSC 2010: 30C55, 30C45Distortion and growth theorems are ...
Yavuz Duman, Emel
core  

Home - About - Disclaimer - Privacy