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Hankel determinants of second and third order for the class of univalent functions
Milutin Obradović, Nikola Tuneski
In this paper we give the upper bounds of the Hankel determinants of the second and third order for the class of univalent functions in the unit disc.
New upper bounds of the third Hankel determinant for some classes of univalent functions
Milutin Obradovic, Nikola Tuneski
In this paper we give improved, probably not sharp, upper bounds of the Hankel determinant of third order for various classes of univalent functions and conjecture the sharp one.
Hankel determinant for a class of analytic functions
Milutin Obradovic, Nikola Tuneski
Let be analutic in the unit disk and normalized so that . In this paper we give sharp bound of Hankel determinant of the second order f…
Hankel determinant of second order for some classes of analytic functions
Milutin Obradovic, Nikola Tuneski
Let be analytic in the unit disk and normalized so that . In this paper, we give upper bounds of the Hankel determinant of second order…