Generalized coefficient estimates for a new subclass of analytic functions

In this study, a new subclass of analytic functions in the open unit disk was defined with the help of the function obtained by applying the Sălăgean derivative to the [Formula: see text]-Ruscheweyh derivative operator. For the functions belonging to this subclass, the coefficient bounds for the Fekete–Szegö functional were determined. The results of this paper are a generalization of the results of Kanas and Darwish [Fekete–Szegö problem for starlike and convex functions of complex order, Appl. Math. Lett. 23(7) (2010) 777–782].