Browsing by Author "Yalçın, Sibel"

Now showing items 1-2 of 2

Generalized Hankel determinant for a general subclass of univalent functions

Yalçın, Sibel; Altınkaya, Şahsene; Owa, Shigeyoshi (Işık University Press, 2018)

Making use of the generalized Hankel determinant, in this work, we consider a general subclass of univalent functions. Moreover, upper bounds are obtained for |a3 − µa2 2|, where µ ∈ R.
On the Chebyshev polynomial coefficient problem of bi-Bazilevič functions

Altınkaya, Şahsene; Yalçın, Sibel (Işık University Press, 2020)

A function said to be bi-Bazilevič in the open unit disk U if both the function and its inverse are Bazilevič there. In this paper, we will study a newly constructed class of bi-Bazilevič functions. Furthermore, we establish ...