Results 31 to 40 of about 998 (123)

Estimate of third Hankel determinant for a subfamily of analytic functions

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2023
In this article, our aim is to study analytic functions related with Salagean operator and associated with the right half of the lemniscate of Bernoulli. We find the estimates of the third Hankel determinant for new family of analytic functions.
Shah Syed Ghoos Ali   +4 more
doaj   +1 more source

Coefficient estimates of new classes of q-starlike and q-convex functions of complex order

open access: yes, 2016
We introduce new classes of q -starlike and q -convex functions of complex order involving the q -derivative operator defined in the open unit disc. Furthermore, we find estimates on the coefficients for second and third coefficients of these classes ...
T. Seoudy, M. Aouf
semanticscholar   +1 more source

Basic and fractional q-calculus and associated Fekete-Szegő problem for p-valently q-starlike functions and p-valently q-convex functions of complex order

open access: yesMiskolc Mathematical Notes, 2019
In this paper, we introduce and study some subclasses of p-valently analytic functions in the open unit disk U by applying the q-derivative operator and the fractional q-derivative operator in conjunction with the principle of subordination between ...
H. Srivastava   +3 more
semanticscholar   +1 more source

On differential subordinations for a class of analytic functions defined by a linear operator

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 42, Page 2219-2230, 2004., 2004
We obtain several results concerning the differential subordination between analytic functions and a linear operator defined for a certain family of analytic functions which are introduced here by means of these linear operators. Also, some special cases are considered.
V. Ravichandran   +3 more
wiley   +1 more source

The radius of starlikeness for convex functions of complex order

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 45, Page 2423-2428, 2004., 2004
We will give the relation between the class of Janowski starlike functions of complex order and the class of Janowski convex functions of complex order. As a corollary of this relation, we obtain the radius of starlikeness for the class of Janowski convex functions of complex order.
Yaşar Polatoglu   +2 more
wiley   +1 more source

Coefficient estimates for a subclass of bi-univalent functions associated with the Salagean differential operator

open access: yesAnnals of Mathematics and Physics
In this paper, we present and examine a novel subset of the function class ∑, which consists of analytic and bi-univalent functions defined in the open unit disk U and connected to the Salagean differential operator.
Shabani Mohammad Mehdi   +2 more
semanticscholar   +1 more source

The Fekete-Szegö functional problems for some subclasses of m-fold symmetric bi-univalent functions

open access: yes, 2016
In this paper, we introduce several new subclasses of the class of m -fold symmetric bi-univalent functions and obtain estimates of the Taylor-Maclaurin coefficients |am+1| , |a2m+1| and Fekete-Szegö functional problems for functions in these new ...
Huo Tang   +3 more
semanticscholar   +1 more source

On starlikeness and close‐to‐convexity of certain analytic functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 66, Page 3621-3630, 2004., 2004
Our purpose is to derive some sufficient conditions for starlikeness and close‐to‐convexity of order α of certain analytic functions in the open unit disk.
Oh Sang Kwon, Nak Eun Cho
wiley   +1 more source

A new family of analytic functions associated with multiplier transformation

open access: yesScientific African, 2021
Some geometric properties of a certain univalent function in the unit disk are considered in this work and the results extend some known results in the literature.
M.O. Oluwayemi, Imran Faisal
doaj  

On a Class of Analytic Univalent Functions Associated with (H-R) Fractional Derivative

open access: yesMuthanna Journal of Pure Science
In this paper, we introduced a class of analytic functions defined by (H–R) fractional derivative defined in the unit disk, we obtained coefficient bounded, so we obtained some theorems of this class. 2000Mathematics Subject classification: 30C45.
Nidaa Hasan Haji
semanticscholar   +1 more source

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