Coefficient Bounds for Certain Subclasses of m -Fold Symmetric Biunivalent Functions

Abstract EN

We consider two new subclasses S Σ m α , λ and S Σ m β , λ of Σ m consisting of analytic and m -fold symmetric biunivalent functions in the open unit disk U .

Furthermore, we establish bounds for the coefficients for these subclasses and several related classes are also considered and connections to earlier known results are made.