Coefficient Estimates for a Subclass of Meromorphic Multivalent q-Close-to-Convex Functions
Symmetry, 2021 By making use of the concept of basic (or q-) calculus, many subclasses of analytic and symmetric q-starlike functions have been defined and studied from different viewpoints and perspectives.
Lei Shi +6 more
semanticscholar +1 more source
On a Subclass of Close-to-Convex Functions [PDF]
Bulletin of the Iranian Mathematical Society, 2018 11 ...
Chung, Yao Liang +2 more
openaire +2 more sources
The second Hankel determinant for strongly convex and Ozaki close-to-convex functions
Annali di Matematica Pura ed Applicata, 2021 Let f be analytic in the unit disk D={z∈C:|z|
Y. Sim, A. Lecko, D. Thomas
semanticscholar +1 more source
Sharp Bounds of the Hermitian Toeplitz Determinants for Some Classes of Close-to-Convex Functions
Bulletin of the Malaysian Mathematical Sciences Society, 2021 Sharp upper and lower bounds of the Hermitian Toeplitz determinants of the second and third orders are found for various subclasses of close-to-convex functions.
A. Lecko, Barbara Śmiarowska
semanticscholar +1 more source
Starlike and convex functions of complex order involving generalized multiplier transformations [PDF]
Mathematica Bohemica, 2021 We investigate the starlike, convex and close-to-convex functions of complex order involving generalized multiplier transformations by means of the Hadamard product.
Adela Osman Mostafa +2 more
doaj +1 more source
On a New Class of Bi-Close-to-Convex Functions with Bounded Boundary Rotation
Mathematics, 2023 In the current article, we introduce a new class of bi-close-to-convex functions with bounded boundary rotation. For this new class, the authors obtain the first three initial coefficient bounds of the newly defined bi-close-to-convex functions with ...
Daniel Breaz +3 more
doaj +1 more source
Bohr Phenomenon for Certain Close-to-Convex Analytic Functions [PDF]
Computational methods in Function Theory, 2020 We say that a class G\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document ...
V. Allu, H. Halder
semanticscholar +1 more source
An application of the generalized Bessel function [PDF]
Mathematica Bohemica, 2017 We introduce and study some new subclasses of starlike, convex and close-to-convex functions defined by the generalized Bessel operator. Inclusion relations are established and integral operator in these subclasses is discussed.
Hanan Darwish +2 more
doaj +1 more source
On some geometric properties for the combination of generalized Lommel–Wright function
Journal of Inequalities and Applications, 2021 The scope of our investigation is to study the geometric properties of the normalized form of the combination of generalized Lommel–Wright function J ν , λ μ , m $J_{\nu ,\lambda }^{\mu ,m}$ defined by J ν , λ μ , m ( z ) : = Γ m ( λ + 1 ) Γ ( λ + ν + 1 )
Hanaa M. Zayed, Teodor Bulboacă
doaj +1 more source
On a generalization of close‐to‐convexity [PDF]
International Journal of Mathematics and Mathematical Sciences, 1982 A class Tk of analytic functions in the unit disc is defined in which the concept of close‐to‐convexity is generalized. A necessary condition for a function f to belong to Tk, raduis of convexity problem and a coefficient result are solved in this paper.
openaire +4 more sources