Coefficient estimates for a subclass of analytic bi-pseudo-starlike functions of Ma-Minda type

Abstract

In this paper, we introduce a new subclass $\mathcal{LB}_{\Sigma }^{\lambda }\left( \varphi \right) $ of analytic and bi-univalent functions in the open unit disk $\mathbb{U}.$ For functions belonging to this class, we obtain initial coefficient bounds.\ Our results generalize and improve some earlier results in the literature