Results 51 to 60 of about 810 (183)

Growth Theorems for a Subclass of Strongly Spirallike Functions

open access: yesJournal of Applied Mathematics, 2014
In this paper we consider a subclass of strongly spirallike functions on the unit disk D in the complex plane C, namely, strongly almost spirallike functions of type β and order α.
Yan-Yan Cui, Chao-Jun Wang, Si-Feng Zhu
doaj   +1 more source

Coefficient Inequalities Related With Apple‐Like Functions

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
Several subfamilies of Ma and Minda starlike and convex functions have been examined differently through individual generating functions in the literature. However, little or no effort has been devoted to subfamily arising from the product of these generating functions.
Aiman Sana   +3 more
wiley   +1 more source

On Second Hankel Determinant of the Class of Biunivalent Beta‐Convex Functions Related to a Five‐Leaf Domain

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
In geometric function theory and complex analysis, analytic functions exhibiting geometric symmetry play a fundamental role. However, investigations concerning multileaf domains, particularly those with fivefold rotational symmetry, have been relatively limited.
Suad Al-Mayyahi   +4 more
wiley   +1 more source

Unified Approach of the Logarithmic Coefficient Bounds for the Class of Bazilevic˘ Functions

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
The investigation of logarithmic coefficients in the theory of univalent functions began with Milin, who demonstrated their importance for understanding geometric features of these mappings through their connection with the Taylor coefficients hm. If S denotes the family of univalent functions on the unit disk D with the expansion hz=z+∑m=2∞hmzm, the ...
Ebrahim Analouei Adegani   +3 more
wiley   +1 more source

Initial Coefficient Bounds of Convex Functions Related to Pascal Snail Function

open access: yesJournal 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   +4 more
wiley   +1 more source

On the hadamard products of Schlicht functions and applications

open access: yesInternational 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

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

open access: yesJournal 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   +2 more
wiley   +1 more source

Straightforward Preparation of Polyurethane‐Based Biomaterials with Dual Antibacterial and Anti‐Adhesive Properties for Long‐Lasting Catheter Applications

open access: yesAdvanced Materials Interfaces, Volume 12, Issue 24, December 22, 2025.
This study presents the elaboration of antibacterial, antiadhesive, and antibiofilm polyurethane by a straightforward process based on the co‐extrusion of 2 wt.% of both antibacterial and antiadhesive copolymer. The material proves to be active even after pre‐exposition to biological media and prevents E. coli biofilm formation without toxicity.
Baptiste Caron   +6 more
wiley   +1 more source

Fekete–Szegö Variations for Some New Classes of Analytic Functions Explained Over Poisson and Borel Distribution Series

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 8, Page 9241-9252, 30 May 2025.
ABSTRACT The motivation of this paper is to explore and generalize Sakaguchi‐type functions, which play a significant role in geometric function theory. In this context, we introduce four new classes of analytic univalent functions: ℑΨ,tb,α,ρ,ℑϑb,α,ρ,ℑΘ,mb,α,ρ$$ {\Im}_{\Psi, t}^{b,\alpha, \rho },\kern0.3em {\Im}_{\vartheta}^{b,\alpha, \rho },\kern0.3em
Arzu Akgül
wiley   +1 more source

Integral operator and starlike functions

open access: yesComputers & Mathematics with Applications, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

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