Abstract
Let be the familiar class of starlike functions of order
in the unit disk. In Keogh and Merkes proved that for a function
in the class
, then
In this paper, we investigate the corresponding problem for the subclass of starlike mappings of order defined on the unit ball in a complex Banach space, on the unit polydisk in
and the bounded starlike circular domain in
, respectively.
AMS Subject Classifications:
Notes
No potential conflict of interest was reported by the authors.