Abstract
The main aim of this paper is to discuss the third Hankel determinants for three classes: \(S^*\) of starlike functions, \(\mathcal {K}\) of convex functions and \(\mathcal {R}\) of functions whose derivative has a positive real part. Moreover, the sharp results for twofold and threefold symmetric functions from these classes are obtained.
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Zaprawa, P. Third Hankel Determinants for Subclasses of Univalent Functions. Mediterr. J. Math. 14, 19 (2017). https://doi.org/10.1007/s00009-016-0829-y
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DOI: https://doi.org/10.1007/s00009-016-0829-y