Initial Coefficient Estimates for Bi-Univalent Functions Related to Generalized Telephone Numbers

Abstract

This study defines three novel classes of bi-univalent functions connected to generalized telephone numbers for the first time. We produced assessments about the Taylor–Maclaurin coefficients a2 and a3 and Fekete–Szegö functional problems for functions involving these novel subclasses for functions in every one regarding these three bi-univalent function classes. Additional findings are anticipated to emerge after expertise the factors included in our significant outcomes, which have not yet been investigated by subordinating with generalized telephone numbers.