Coefficient estimates for a subclass of meromorphic bi-univalent functions defined by subordination


Adegani E. A. , Motamednezhad A., BULUT S.

STUDIA UNIVERSITATIS BABES-BOLYAI MATHEMATICA, cilt.65, ss.57-66, 2020 (ESCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 65 Konu: 1
  • Basım Tarihi: 2020
  • Doi Numarası: 10.24193/subbmath.2020.1.05
  • Dergi Adı: STUDIA UNIVERSITATIS BABES-BOLYAI MATHEMATICA
  • Sayfa Sayıları: ss.57-66

Özet

In this work, we use the Faber polynomial expansion by a new method to find upper bounds for vertical bar b(n)vertical bar coefficients for meromorphic bi-univalent functions class Sigma' which is defined by subordination. Further, we generalize and improve some of the previously published results.