BOUND ON HANKEL DETERMINANTS H(2) FOR LEMNISCATE STARLIKE FUNCTIONS

Kumar S., Rai P., Cetinkaya A.

HONAM MATHEMATICAL JOURNAL, no.1, pp.92-108, 2023 (ESCI) identifier

  • Publication Type: Article / Article
  • Publication Date: 2023
  • Doi Number: 10.5831/hmj.2023.45.1.92
  • Journal Name: HONAM MATHEMATICAL JOURNAL
  • Journal Indexes: Emerging Sources Citation Index (ESCI)
  • Page Numbers: pp.92-108
  • Istanbul Kültür University Affiliated: Yes

Abstract

We determine the upper bounds on fourth order Hankel de-terminants H4(2) (f) and H(3) 4 (f) for the class S*L of lemniscate starlike functions defined on the open unit disk which was introduced by Sok ' o l and Stankiewicz in [17].