Sharp bounds of some coefficient functionals over the class of functions convex in the direction of the imaginary axis

Authors

  • N. E. Cho Pukyong National University
  • B. Kowalczyk University of Warmia and Mazury in Olsztyn
  • A. Lecko University of Warmia and Mazury in Olsztyn

Keywords:

Univalent functions, functions convex in the direction of the imaginary axis, Hankel determinant, Zalcman functional, coefficients, Carath\'eodory class

Abstract

DOI: 10.1017/S0004972718001429

Author Biographies

N. E. Cho, Pukyong National University

Department of Applied Mathematics

B. Kowalczyk, University of Warmia and Mazury in Olsztyn

Department of Complex Analysis

A. Lecko, University of Warmia and Mazury in Olsztyn

Department of Complex Analysis, professor

Published

2019-06-26

Issue

Section

Articles