Inequalities on coefficients for certain classes of m-fold symmetric and bi-univalent functions equipped with Faber polynomial

Abstract

In this work, considering a new subclass of bi-univalent functions which are m-fold symmetric and analyticfunctions in the open unit disk, we determine estimates for the general Taylor–Maclaurin coefficient of the functions inthis class. Furthermore, initial upper bounds of coefficients for m-fold symmetric, analytic and bi-univalent functionswere found in this study. For this purpose, we used the Faber polynomial expansions. In certain cases, the coefficientbounds presented in this paper would generalize and improve some recent works in the literature. We hope that thispaper will inspire future researchers in applying our approach to other related problems.