In this paper, we consider a general subclass H_{\Sigma _{m}}(\beta ) of  \Sigma _{m} consisting of analytic and m-fold symmetric bi-univalent functions in the open unit disc \mathcal{U}. An estimate for the second Hankel determinant for m-fold symmetric bi-univalent functions are determined.

 

 

 

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Author(s)

Şahsene, Altinkaya, Yalçin, Sibel