Results 101 to 110 of about 1,299 (211)

A Univalence Preserving Integral Operator

open access: yesJournal of Inequalities and Applications, 2008
We define an integral operator denoted by I, and we give sufficient conditions such that F=I(f1,f2,…,fm) is univalent.
Georgia Irina Oros
doaj   +2 more sources

Sufficient conditions for univalence in ℂ n

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
The method of subordination chains is used to establish new univalence criteria for holomorphic mappings in the unit ball of ℂ n. Various criteria involving the first and the second derivative of a holomorphic mapping in the unit ball of ℂ n are ...
Dorina Rãducanu
doaj   +1 more source

The Univalence of Some Integral Operators [PDF]

open access: yes, 2012
In this paper, we obtain the conditions for univalence of the integral operators of two forms.Key Words: Integral operator ...
Makinde, Deborah O.
core   +1 more source

Univalent Functions with Univalent Derivatives III [PDF]

open access: yesIndiana University Mathematics Journal, 1969
S. M. Shah, S. Y. Trimble
openaire   +2 more sources

On a class of univalent functions

open access: yesApplied Mathematics Letters, 2012
AbstractLet A be the class of analytic functions in the unit disk D with the normalization f(0)=f′(0)−1=0. Denote by N the class of functions f∈A which satisfy the condition |−z3(zf(z))‴+f′(z)(zf(z))2−1|≤1,z∈D. We show that functions in N are univalent in D but not necessarily starlike.
Milutin Obradovic, Saminathan Ponnusamy
openaire   +2 more sources

On an Improvement of an Univalence Criterion

open access: yes, 2010
In this paper the method of subordination chains is used to obtain sufficient conditions for the univalence of an integral operator.These conditions improve the univalence criterion due to M.Goluzin [1]
Orhan, Halit   +2 more
core  

Univalence conditions for a general integral operator

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2015
For analytic functions in the open unit disk U, we define a new general integral operator. The main object of the this paper is to study this new integral operator and to determine univalence conditions of it.
Oprea Adriana, Breaz Daniel
doaj   +1 more source

Univalence Criteria and Quasiconformal Extensions

open access: yes, 2017
We establish more general conditions for the univalence of analytic functions in the open unit disk .
ORHAN, Halit, Caglar, M.
core   +1 more source

On General Integral Operator of Analytic Functions

open access: yesAbstract and Applied Analysis, 2013
Let be the integral operator defined by , where each of the functions and is, respectively, analytic functions and functions with positive real part defined in the open unit disk for all .
Nasser Alkasbi, Maslina Darus
doaj   +1 more source

Typically real logharmonic mappings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We consider logharmonic mappings of the form f(z)=z|z| 2βhg¯ defined on the unit disk U which are typically real. We obtain representation theorems and distortion theorems.
Zayid Abdulhadi
doaj   +1 more source

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