Results 91 to 100 of about 3,606 (203)

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

Univalent functions with univalent sections [PDF]

open access: yes, 1998
Contains fulltext : 265336.pdf (Publisher’s version ) (Open Access)
openaire  

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

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

DMC1 stabilizes crossovers at high and low temperatures during wheat meiosis. [PDF]

open access: yesFront Plant Sci, 2023
Draeger TN   +5 more
europepmc   +1 more source

On Subclasses of Analytic Functions with respect to Symmetrical Points

open access: yesAbstract and Applied Analysis, 2012
In our present investigation, motivated from Noor work, we define the class ℛks(b) of functions of bounded radius rotation of complex order b with respect to symmetrical points and learn some of its basic properties.
Muhammad Arif   +2 more
doaj   +1 more source

Geometric Properties of a New Integral Operator

open access: yesAbstract and Applied Analysis, 2015
We obtain sufficient conditions for the univalence, starlikeness, and convexity of a new integral operator defined on the space of normalized analytic functions in the open unit disk.
Roberta Bucur   +2 more
doaj   +1 more source

SOME UNIVALENCE CRITERIA

open access: yesDemonstratio Mathematica, 2002
Let \(A\) denote the class of all analytic functions \(f(z)\) defined in the open unit disc of the complex plane and normalized by \(f(0)= 0\), \(f'(0)= 1\). Let \(S\) denote the subclass of \(A\) consisting of univalent functions. In this paper the authors prove that if \(f\in A\) with \[ \text{Re}\Biggl\{e^{i\theta} {zf''(z)\over f'(z)}\Biggr\}\leq{1\
Blezu, Dorin, Pascu, Nicolae N.
openaire   +1 more source

Some sufficient conditions for univalence

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
A new subclass R(α), 0≤α≤1, of the class St(1/2) the class of starlike functions of order 1/2 is introduced and it is shown that R(α) is closed with respect to the Hadamard product of analytic functions.
Sukhjit Singh
doaj   +1 more source

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