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Toplam kayıt 4, listelenen: 1-4
Second Hankel determinant problem for several classes of analytic functions related to shell-like curves connected with Fibonacci numbers
(Işık University Press, 2018-01-16)
In this paper, we investigate upper bounds for the second Hankel determinant in several classes of analytic functions in the open unit disc, related to shell-like curves and connected with Fibonacci numbers.
Study of subclasses of starlike and convex functions
(Işık University Press, 2020)
In this article, we introduce new subclasses of starlike and convex functions by using a new differential operator defined in the open unit disk U. We study the geometric properties of such subclasses of starlike and convex ...
On a class of sakaguchi functions related to Bernoulli lemniscate and modified sigmoid function
(Işık University Press, 2020)
The aim of this investigation is to provide further results on a class of Sakaguchi functions related to Bernoulli Lemniscate and modified sigmoid function for the class SL(s, t, Φm,n). Early few coefficient bounds of f(z) ...
Upper bound for third Hankel determinant of a class of analytic functions
(Işık University Press, 2023-10)
We establish upper bounds for second Hankel determinant, the Fekete-Szegö functional and third Hankel determinant for normalized analytic functions f ∈ Wβ(α, γ),Wβ(α, γ) = { f : Re ((1 − α + 2γ)f(z)/z+ (α − 2γ)fʹ(z) + ...