Results 81 to 90 of about 2,822,582 (218)

On the hadamard products of Schlicht functions and applications

International Journal of Mathematics and Mathematical Sciences, 1985
We show that each of the schlicht classes of starlike, convex, close-to-convex and strongly starlike with respect to symmetric points is invariant under the Hadamard product with the class of convex functions.
H. S. Al-Amiri
doaj   +1 more source

Initial Coefficient Bounds of Convex Functions Related to Pascal Snail Function

Journal of Mathematics, Volume 2026, Issue 1, 2026.
For −1 ≤ λ ≤ 1, let Cλ be a subclass of convex functions associated with the Pascal snail function, analytically defined by the subordination relation, (1 + τf″(τ)/f′(τ))≺1/(1 − λτ). In this article, we have presented the initial coefficient bounds for the functions f in the class Cλ. We have also established the bounds on the Hankel determinants |H2,1(
Arooj Fatima, Umar Raza, Afis Saliu, Tanweer Sohail, Mohammad W. Alomari   +4 more
wiley   +1 more source

Coefficient Bounds and Stability for an Arctangent–Superexponential Convolution Class

Journal of Mathematics, Volume 2026, Issue 1, 2026.
This paper presents a new convolution framework for normalized analytic functions in the open unit disk. The framework uses an arctangent and superexponential coefficient kernel, with each part serving a different purpose. The arctangent factor controls the early Taylor coefficients, while the cubic superexponential factor quickly reduces the higher ...
Sarem H. Hadi, Mirajul Haq, Alina Alb Lupaş, Muhammad Arif, Khalil Ullah, Isra Al-Shbeil, Smritijit Sen   +6 more
wiley   +1 more source

Classes of uniformly starlike and convex functions [PDF]

, 2004
Some classes of uniformly starlike and convex functions are introduced.
S. R. Kulkarni, Saeid Shams, Jay M. Jahangiri   +2 more
core   +1 more source

Starlike functions associated with a petal shaped domain

, 2022
In this paper, we establish some radius results and inclusion relations for starlike functions associated with a petal-shaped ...
Arora, Kush, Kumar, Sivaprasad S.
core   +1 more source

On a linear combination of q-starlike and q-convex [PDF]

European Journal of Mathematics and Applications
This investigation is about a set of analytic-univalent function-kind $$\mathfrak{f}(z)=z+\sum\limits_{j\geqq2}a_jz^j,\quad |z|
Ayotunde Olajide Lasode, Rasheed Olawale Ayinla   +1 more
doaj   +1 more source

q‐Poisson and q‐Pascal Distribution Series for Analytic Function Classes

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this paper, we study analytic function classes defined by the q‐derivative and convolution operators generated by discrete q‐distributions. We first consider coefficient conditions for the class determined by a q‐derivative inequality and its negative‐coefficient subclass. We then investigate the q‐Poisson and q‐Pascal distribution series and derive
Serkan Çakmak, Sibel Yalçın, Smritijit Sen   +2 more
wiley   +1 more source

On Starlike and Convex Functions with Respect to 2k-Symmetric Conjugate Points

, 2016
[[abstract]]In the present paper, two new classes S(k) sc () and C(k) sc () of func- tions starlike and convex with respect to 2k-symmetric conjugate points are introduced.
Wang, Zhi-gang, Gao, Chun-yi
core  

On a New Criterion for Meromorphic Starlike Functions [PDF]

, 2014
The main purpose of this paper is to derive a new criterion for meromorphic starlike functions of order ...
Zhi-Gang Wang, Lei Shi
core   +1 more source

Second Hankel Determinants for Some Subclasses of Biunivalent Functions Associated with Pseudo-Starlike Functions

, 2017
We introduce second Hankel determinant of biunivalent analytic functions associated with λ-pseudo-starlike function in the open unit disc Δ subordinate to a starlike univalent function whose range is symmetric with respect to the real axis.
K. Rajya Laxmi, R. Bharavi Sharma
core   +1 more source