# Second Hankel determinant for certain subclasses of bi-univalent   functions involving Chebyshev polynomials

**Authors:** Halit Orhan, Evrim Toklu, Ekrem Kad{\i}o\u{g}lu

arXiv: 1706.07937 · 2017-07-11

## TL;DR

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## Contribution

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## Abstract

In this paper our purpose is to find upper bound estimate for the second Hankel determinant $|a_{2}a_{4}-a_{3}^{2}|$ for functions defined by convolution belonging to the class $\mathcal{N}_{\sigma}^{\mu,\delta}(\lambda,t)$ by using Chebyshev polynomials.

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## References

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Source: https://tomesphere.com/paper/1706.07937