On new subclasses of bi-univalent functions defined by generalized Sălăgean differential operator

Abstract

The aim of this investigation is to introduce two new subclasses of the class related with the generalized S¼ al¼ agean di¤erential operator and …nd estimates on the coe¢ cients ja 2 j and ja 3 j for functions in these new subclasses. Moreover, we give some interesting results by using the relationship between S¼ al¼ agean's di¤erential operator and generalized S¼ al¼ agean di¤erential operator.