Browsing by Author "Yalçın, Sibel"
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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 ...