COEFFICIENT BOUNDS FOR A GENERAL SUBCLASS OF BI-UNIVALENT FUNCTIONS
MATEMATICHE, cilt.71, sa.1, ss.89-97, 2016 (ESCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 71 Sayı: 1
- Basım Tarihi: 2016
- Doi Numarası: 10.4418/2016.71.1.7
- Dergi Adı: MATEMATICHE
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
- Sayfa Sayıları: ss.89-97
- Anahtar Kelimeler: Analytic and univalent functions, bi-univalent functions, coefficient bounds
- Bursa Uludağ Üniversitesi Adresli: Evet
Özet
In the present investigation, we introduce and investigate a new subclass of the function class Sigma of bi-univalent functions defined in the open unit disc. We find estimates on the coefficients vertical bar a(2)vertical bar and vertical bar a(3)vertical bar for functions in the function class S-Sigma (n, h, lambda). The results presented in this paper improve or generalize the recent works of Jothibasu [13] and other authors.