Affiliation:
1. Department of Mathematics, Yangzhou University, Yangzhou, People’s Republic of China
Abstract
A new class Tn(A,B,?) of multivalent analytic functions defined by the
first-order differential subordination is introduced. Some geometric
properties of this new class are investigated. The sharp lower bound on |z|
= r < 1 for the functional Re {(1-?) f(z)/zp + ?f'(z)/pzp-1} over
the class Tn(A,B,0) is given.
Publisher
National Library of Serbia