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math.QA2004
Hopf Powers and Orders for Some Bismash Products
Rachel Landers, Susan Montgomery, Peter Schauenburg
The Hopf order of an element of a Hopf algebra is the least such that the -th Hopf power of is trivial. For some bismash product Hopf algebras obtained from fact…
math.QA2001
Computing the Frobenius-Schur indicator for abelian extensions of Hopf algebras
Yevgenia Kashina, Geoffrey Mason, Susan Montgomery
In this paper we show that for an important class of non-trivial Hopf algebras, the Schur indicator is a computable invariant. The Hopf algebras we consider are all abelian extensi…