Results 31 to 40 of about 642 (133)

On Meromorphic Parabolic Starlike Functions with Fixed Point Involving the q-Hypergeometric Function and Fixed Second Coefficients

Mathematics, 2023
This article defines a new class of meromorphic parabolic starlike functions in the punctured unit disc D*={z∈C ...
Norah Saud Almutairi, Awatef Shahen, Hanan Darwish   +2 more
doaj   +1 more source

New criteria for meromorphic starlike univalent functions [PDF]

Bulletin of the Australian Mathematical Society, 1991
This paper establishes new criteria for meromorphic starlike univalent functions of the formFurther property preserving integrals are considered.
B.A. Uralegaddi, C. Somanatha
openaire   +1 more source

Bounds for the Second Hankel Determinant of Certain Univalent Functions

, 2013
The estimates for the second Hankel determinant a_2a_4-a_3^2 of analytic function f(z)=z+a_2 z^2+a_3 z^3+...b for which either zf'(z)/f(z) or 1+zf"(z)/f'(z) is subordinate to certain analytic function are investigated.
Keong, Lee See, Ravichandran, V., Supramaniam, Shamani   +2 more
core   +1 more source

Spirallikeness of shifted hypergeometric functions

, 2016
In the present paper, we study spirallikenss (including starlikeness) of the shifted hypergeometric function $f(z)=z_2F_1(a,b;c;z)$ with complex parameters $a,b,c,$ where $_2F_1(a,b;c;z)$ stands for the Gaussian hypergeometric function. First, we observe
Sugawa, Toshiyuki, Wang, Li-Mei
core   +1 more source

Estimates for Coefficients of Certain Analytic Functions

, 2017
For $ -1 \leq B \leq 1$ and $A>B$, let $\mathcal{S}^*[A,B]$ denote the class of generalized Janowski starlike functions consisting of all normalized analytic functions $f$ defined by the subordination $z f'(z)/f(z) \prec (1+ A z)/(1+ B z)$ $(|z|1)$ and ...
Ravichandran, V., Verma, Shelly
core   +1 more source

Pascu-Rønning Type Meromorphic Functions Based on Sălăgean-Erdély–Kober Operator

Axioms, 2023
In the present investigation, we introduce a new class of meromorphic functions defined in the punctured unit disk Δ*:={ϑ∈C ...
Sheza M. El-Deeb, Gangadharan Murugusundaramoorthy, Kaliappan Vijaya, Alhanouf Alburaikan   +3 more
doaj   +1 more source

Study about inclusion relationships and integral preserving properties [PDF]

Surveys in Mathematics and its Applications, 2012
The object of the present paper is to investigate a family of integral operators defined on the space of meromorphic functions. By making use of these novel integral operators, we introduce and investigate several new subclasses of starlike, convex ...
Imran Faisal, Maslina Darus
doaj  

On certain classes of meromorphically starlike functions [PDF]

International Journal of Mathematics and Mathematical Sciences, 1994
The object of the present paper is to introduce a new class ∑n(α) of meromorphic functions defined by a multiplier transformation and to investigate some properties for the class ∑n(α) Further we study integrals of functions in ∑n(α).
Nak Eun Cho, Ji A. Kim
openaire   +3 more sources

EXTENSION OF STARLIKE FUNCTIONS TO A FINITELY PUNCTURED PLANE

Проблемы анализа, 2017
We consider a sequence of functions which are starlike in the unit disk and their logarithmic derivatives are meromorphic with a finite number of simple poles in any boundary domain.
D. V. Prokhorov
doaj   +1 more source

Applications of Some Subclasses of Meromorphic Functions Associated with the q-Derivatives of the q-Binomials

Mathematics, 2023
In this article, we make use of the q-binomial theorem to introduce and study two new subclasses ℵ(αq,q) and ℵ(α,q) of meromorphic functions in the open unit disk U, that is, analytic functions in the punctured unit disk U∗=U\{0}={z:z ...
Ekram E. Ali, Hari M. Srivastava, Abdel Moneim Y. Lashin, Abeer M. Albalahi   +3 more
doaj   +1 more source