Initial coefficient estimates for some subclasses of M-Fold symmetric BI-Univalent functions

In the present investigation, we consider two new general subclasses B∑m(τ,λ;α) and of ∑m consisting of analytic and m-fold symmetric bi-univalent functions in the open unit disk U. For functions belonging to the two classes introduced here, we derive non-sharp estimates on the initial coefficients |am+1| and |a2m+1|. Several connections to some of the earlier known results are also pointed out.