The Fekete-Szego functional for generalized starlike and convex functions of complex order

ORHAN H., Raducanu D.

ASIAN-EUROPEAN JOURNAL OF MATHEMATICS, cilt.14, sa.3, 2021 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 3
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1142/s1793557121500364
  • Dergi Adı: ASIAN-EUROPEAN JOURNAL OF MATHEMATICS
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus, zbMATH
  • Anahtar Kelimeler: Salagean derivative operator, Hadamard product, Fekete-Szego problem, convex and starlike functions of complex order, COEFFICIENT INEQUALITY
  • Atatürk Üniversitesi Adresli: Evet

Özet

New subclasses of analytic functions are defined by using the function f(delta)(z) given by the integral transform f(delta)(z) =f(0)(z)(1+r/1-r)(delta) 1/1-r(2) dr. Bounds for the Fekete-Szego coefficient functional vertical bar a(3) - mu a(2)(2)| for these classes of functions are derived.