coefficient estimates for a subclass of bi-univalent functions defined by the salagean operator and horadam polynomials

‎in this paper‎, ‎we introduce and investigate a new subclass of analytic bi-univalent functions in the open unit disk $mathbb{u}$‎, ‎defined by means of subordination and the salagean differential operator associated with the horadam polynomials‎. ‎we derive sharp upper bounds for the second and third taylor-maclaurin coefficients of functions belonging to this subclass and investigate the corresponding fekete-szeg{o} problem‎. ‎the results presented here generalize and extend several previously established results available in the literature‎.