Coefficient Estimates for New Subclasses of Analytic and Bi-Univalent Functions Defined by Al-Oboudi Differential Operator


Bulut S.

JOURNAL OF FUNCTION SPACES AND APPLICATIONS, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası:
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1155/2013/181932
  • Dergi Adı: JOURNAL OF FUNCTION SPACES AND APPLICATIONS

Özet

We introduce and investigate two new subclasses N-Sigma(delta,mu)(n,alpha,lambda) and N-Sigma(delta,mu)(n,beta,lambda) of analytic and bi-univalent functions in the open unit disk U. For functions belonging to these classes, we obtain estimates on the first two Taylor-Maclaurin coefficients vertical bar a(2)vertical bar and vertical bar a(3)vertical bar.