Results 61 to 70 of about 2,322 (136)
, 2020 In this paper, we introduce a certain class H λ,α m,q (ζ,M ) of normalized analytic functions of complex order connected with a q-analogue of integral operators. For this complex-order analytic function class, we determine a sufficient condition in terms
H. Srivastava, S. El-Deeb
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Hadamard Product on Subclasses of Meromorphic Functions Involving q‐Difference Operator
Journal of Function Spaces, Volume 2025, Issue 1, 2025.By making use of a q‐derivative operator, certain families of meromorphic q‐starlike functions and meromorphic q‐convex functions are introduced and studied. In this paper, we define a q‐analogous value of differential operators for meromorphic functions with the help of basic concepts of quantum (q‐)calculus operator theory and introduce new ...
W. Y. Kota +3 more
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Annals of Mathematics and PhysicsIn 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
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Sharp estimation of Hermitian-Toeplitz determinants for Janowski type starlike and convex functions
Miskolc Mathematical Notes, 2020 The sharp upper and lower bounds for the third-order Hermitian-Toeplitz determinant are investigated for the classes of Janowski type starlike and convex functions.
Virendra Kumar, R. Srivastava, N. Cho
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Bi‐Starlike Function of Complex Order Involving Rabotnov Function Associated With Telephone Numbers
Journal of Mathematics, Volume 2025, Issue 1, 2025.Telephone numbers defined through the recurrence relation Qn=Qn−1+n−1Qn−2 for n ≥ 2, with initial values of Q0=Q1=1. The study of such numbers has led to the establishment of various classes of analytic functions associated with them. In this paper, we establish two new subclasses of bi‐convex and bi‐starlike functions of complex order in the open unit
Sa’ud Al-Sa’di +3 more
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Convex combination of analytic functions
Open Mathematics, 2017 Radii of convexity, starlikeness, lemniscate starlikeness and close-to-convexity are determined for the convex combination of the identity map and a normalized convex function F given by f(z) = α z+(1−α)F(z).
Cho Nak Eun +2 more
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Certain Differential Subordinations using a Generalized Sălăgean Operator and Ruscheweyh Operator [PDF]
, 2010 MSC 2010: 30C45, 30A20, 34A40In the present paper we define a new operator using the generalized Sălăgean operator and the Ruscheweyh ...
Alb Lupaş, Alina
core
Coefficient estimates for new subclasses of Ma-Minda bi-univalent functions
Journal of Inequalities and Applications, 2013 In this paper, we introduce and investigate two new subclasses Hσμ(λ,φ) and Mσγ(λ,μ,φ) of Ma-Minda bi-univalent functions defined by using subordination in the open unit disk D={z∈C:|z|
Huo Tang, Guantie Deng, Shuhai Li
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Journal of Mathematics, Volume 2025, Issue 1, 2025.In this article, we have studied the class Ccos of normalized analytic functions f satisfying 1 + zf″(z)/f′(z)≺cos(z). We present the improved coefficient bounds and the Hankel determinants of fourth order for functions lying in the class Ccos. We also extended the same results for the inverse function.
Umar Raza +3 more
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Results on a certain class of analytic functions associated with Chebyshev polynomial
Scientific African, 2023 In this work, it was established that Chebyshev polynomial of the second kind belongs to the class of functions with positive real part. The convolution of the Chebyshev polynomial and modified sigmoid function was established to also give functions ...
M.O. Oluwayemi +1 more
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