COEFFICIENTS BOUNDS FOR A SUBCLASS OF BI-UNIVALENT FUNCTIONS DEFINED BY AL-OBOUDI DIFFERENTIAL OPERATOR

UYANIK N., Gokkurt Ozdemir O.

THERMAL SCIENCE, vol.26, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26
  • Publication Date: 2022
  • Doi Number: 10.2298/tsci22s2583u
  • Journal Name: THERMAL SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Directory of Open Access Journals
  • Anadolu University Affiliated: Yes

Abstract

In this paper, we investigate a new subclass Sigma(n)(delta)(lambda,gamma,phi) of analytic and bi-univalent functions in the open unit disk u = {z:|z|<1}defined by Al-Oboudi differential operator. We obtain coefficient bounds |a(2)| and |a(3)| for functions belonging to subclass Sigma(n)(delta)(lambda,gamma,phi). Relevant connections of the results presented here with various well-known results are briefly indicated.