Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12188/1785
Title: Hankel determinant of second order for some classes of analytic functions
Authors: Milutin Obradovic
Nikola Tuneski
Keywords: Mathematics - Complex Variables
Mathematics - Complex Variables
Issue Date: 19-Mar-2019
Abstract: Let $f$ be analytic in the unit disk $\mathbb D$ and normalized so that $f(z)=z+a_2z^2+a_3z^3+\cdots$. In this paper, we give upper bounds of the Hankel determinant of second order for the classes of starlike functions of order $\alpha$, Ozaki close-to-convex functions and two other classes of analytic functions. Some of the estimates are sharp.
URI: http://hdl.handle.net/20.500.12188/1785
Appears in Collections:Faculty of Mechanical Engineering: Journal Articles

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