A subfamily of bi-univalent functions involving the Riemann-Liouville fractional derivative subordinate to the sine function

Abstract

In this study, we provide a class of bi-univalent functions defined via the Riemann-Liouville subordination derivative with the sine function. we establish that this class is non-empty and provide best bounds for the initial coefficients, alongside the maximal estimate for the Fekete-Szego functional.