In this note we prove the Bieberbach conjecture for some
classes of quaternionic functions, including quaternionic slice regular
functions with specific geometric properties such as starlike and convex
functions. At the same time, we investigate some interesting properties
related to the concepts of starlikeness for these quaternionic slice regular
functions. Furthermore, we introduce and obtain generalizations and
results for the class of quaternionic Carath´eodory functions, such as a
version of Rogosinski’s Theorem over the quaternions.
