COEFFICIENT ESTIMATES FOR A SUBCLASS OF ANALYTIC BI-UNIVALENT FUNCTIONS

Adegani E., Bulut S., Zireh A.

BULLETIN OF THE KOREAN MATHEMATICAL SOCIETY, cilt.55, sa.2, ss.405-413, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 2
  • Basım Tarihi: 2018
  • Doi Numarası: 10.4134/bkms.b170051
  • Dergi Adı: BULLETIN OF THE KOREAN MATHEMATICAL SOCIETY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.405-413
  • Kocaeli Üniversitesi Adresli: Evet

Özet

In this work, we use the Faber polynomial expansions to find upper bounds for the coefficients of analytic bi-univalent functions in subclass Sigma(tau,gamma,phi) which is defined by subordination conditions in the open unit disk U. In certain cases, our estimates improve some of those existing coefficient bounds.