Automorphism groups of pointed Hopf algebras

doi:10.1007/s11464-007-0020-7

PDF(176 KB)

Front. Math. China ›› 2007, Vol. 2 ›› Issue (2) : 305-316. DOI: 10.1007/s11464-007-0020-7

Automorphism groups of pointed Hopf algebras

YANG Shilin

Author information +

History +

Abstract

The group of Hopf algebra automorphisms for a finite-dimensional semisimple cosemisimple Hopf algebra over a field k was considered by Radford and Waterhouse. In this paper, the groups of Hopf algebra automorphisms for two classes of pointed Hopf algebras are determined. Note that the Hopf algebras we consider are not semisimple Hopf algebras.