Second Hankel Determinant for certain class of bi-univalent functions defined by Chebyshev polynomials

Abstract

Making use of Chebyshev polynomials, we obtain upper bound estimate for the second Hankel determinant of a subclass ${\mathcal{N}}_{\sigma }^{\mu }\left(\lambda ,t\right)$ of bi-univalent function class $\sigma .$

13 pages