The sharp bound of the third order Hankel determinant for inverse of Ozaki close-to-convex functions

Biswajit Rath, K. Sanjay Kumar, D. Vamshee Krishna

Let $f$ be analytic in the unit disk $\mathbb{D}=\{z\in \mathbb{C}:|z|<1\}$, and $\mathcal{S}$ be the subclass of normalized univalent functions given by $f(z)=\sum_{n=1}^{\…