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arXiv · 1908.07350

Upper bound of second Hankel determinant of subclass of bi-univalent functions defined by subordination

Alaa H. El-Qadeem·Mohamed A. Mamon
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Abstract

In this paper, new class of bi-univalent functions are introduced. Upper bound of the second Hankel determinant $|H_2(2)|$ of subclass of bi-univalant functions class $\Sigma$, which defined by subordination, investigated. Furthermore, some results concluded as a special case of our main results and corrected some previous researchers results which investigated by miscalculation.

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Alaa H. El-Qadeem, Mohamed A. Mamon. 2019-08-08. Upper bound of second Hankel determinant of subclass of bi-univalent functions defined by subordination. https://arxiv.org/abs/1908.07350

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