Initial Estimates of Seven Coefficients for a Subclass of Bi-Starlike Functions

Janani T., Yalçın S. N.

UKRAINIAN MATHEMATICAL JOURNAL, cilt.73, sa.11, ss.1825-1834, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73 Sayı: 11
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1007/s11253-022-02032-2
  • Dergi Adı: UKRAINIAN MATHEMATICAL JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, MathSciNet, zbMATH
  • Sayfa Sayıları: ss.1825-1834
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

We study a subclass of bi-starlike functions and obtain, for the first time, the initial seven Taylor- Maclaurin coefficient estimates |a(2)|, |a(3)|, . . . , |a(7)| for functions from a subclass of the function class sigma. Some new or known consequences of the accumulated results are also pointed out.