Results 51 to 60 of about 111 (99)

Sufficient conditions for Janowski starlike functions [PDF]

open access: yes, 2016
Sufficient conditions for confluent (Kummer) hypergeometric function, generalized and normalized Bessel function of the first kind of complex order and integral operator to be subordinate to (1+Az)/(1+Bz) are obtained as applications.
SHARMA, Kanika, RAVICHANDRAN, V.
core  

Subclass of analytic functions on q-analogue connected with a new linear extended multiplier operator

open access: yes
Using a new linear extended multiplier q-Choi-Saigo-Srivastava operator we define a subclass subordination and the newly defined q-analogue of the Choi-Saigo-Srivastava operator to the class of analytic functions.
ALI, Ekram E.
core   +1 more source

Radius of starlikeness through subordination

open access: yes, 2023
A normalized function f on the open unit disc is starlike (or convex) univalent if the associated function zf/(z)/f (z) (or 1+zf//(z)/f/(z)) is a function with positive real part.
Vaithiyanathan Ravichandran   +3 more
core   +1 more source

Generalized q-Srivastava-Attiya operator on multivalent functions

open access: yes
In this article, we define a generalized q-integral operator on multivalent functions. It generalizes many known linear operators in Geometric Function Theory (GFT).
BADAR, Rizwan Salim   +1 more
core   +1 more source

On the starlikeness of iterative integral operators [PDF]

open access: yes, 2016
The main object of the present paper is to investigate starlikeness of certain integral operators‎, ‎which are defined here by means of iterative in the‎ ‎open disk $\mathbb{D}_R=\{z\in\mathbb{C}:|z|<R\}$ with $R\geq1$‎.
ARJOMANDINIA, Parviz, AGHALARY, Rasoul
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Certain sufficient conditions for starlikeness and convexity using a multiplier transformation

open access: yes, 2018
In the present paper, we study a differential subordination involving a multiplier transformation. Selecting different dominants to our main result, we obtain certain sufficient conditions for starlikeness and convexity of analytic functions.
BILLING, Sukhwinder Singh, BRAR, Richa
core   +1 more source

Differential subordinations and superordinations for analytic functions defined by S˘al˘agean integro-differential operator

open access: yes, 2019
In this paper we consider the linear operator L n : A → A, L nf (z) = (1 − λ) Dnf (z) + λInf (z) , where Dn is the S˘al˘agean differential operator and In is the S˘ala˘gean integral operator.
PÁLL-SZABÓ, Ágnes Orsolya
core   +1 more source

Letter to the Editor. Remarks on Some Inequalities for Polynomials [PDF]

open access: yes, 2013
MSC 2010: 30A10, 30C10, 30C80, 30D15, 41A17.In the present article, I point out serious errors in a paper published in Mathematica Balkanica three years ago. These errors seem to go unnoticed because some mathematicians are applying the results stated in
Hachani, M. A.
core  

Inclusion and distortion properties for certain meromorphically multivalent functions

open access: yes, 2017
Two new subclasses Hp,k(λA;B) and Qp,k(λA;B) of meromorphically multivalent functions starlike with respect to k-symmetric points are introduced. Distortion bounds and inclusion relations for these subclasses are obtained.Mathematics Subject Classication
Srivastava, Rekha, Liu, Jin-Lin
core  

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