Second Hankel Determinant for Strongly Bi-Starlike of order α

• Main Authors: Chow Li Yong, Aini Janteng, Suzeini Abd. Halim
• 格式: Article
• 語言: English; English
• 出版: 2018
• 主題: Q Science (General)
• 在線閱讀: https://eprints.ums.edu.my/id/eprint/25749/1/Second%20Hankel%20Determinant%20for%20Strongly%20Bi-Starlike%20of%20order%20%CE%B1.pdf; https://eprints.ums.edu.my/id/eprint/25749/2/Second%20Hankel%20Determinant%20for%20Strongly%20Bi-Starlike%20of%20order%20%CE%B1%201.pdf; https://eprints.ums.edu.my/id/eprint/25749/

Let A denote the class of functions f (z) = z + �∞ n=2 anz n which are analytic in the open unit disc U = {z : |z| < 1}. Let S denote the class of all functions in A that are univalent in U. A function f ∈ A is said to be bi-univalent in U if both f and f −1 are univalent in U. Let denote the class of bi-univalent functions in U. In this paper, we obtained the upper bounds for the second Hankel functional |a2a4 − a2 3 | for strongly bi-starlike of order α.