COEFFICIENT ESTIMATES FOR A SUBCLASS OF ANALYTIC BI-UNIVALENT FUNCTIONS
BULLETIN OF THE KOREAN MATHEMATICAL SOCIETY, cilt.55, sa.2, ss.405-413, 2018 (SCI-Expanded, Scopus)
- 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.