POINTED HOPF ACTIONS ON CENTRAL SIMPLE DIVISION ALGEBRAS
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31_2021_9690_ReferencePDF.pdf
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449.75 KB
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b4ee684720d1ab90ef7f80b0c9b6fef1
Author(s)
ETINGOF, P.
NEGRON, C.
Date Issued
January 3, 2022
Publisher
Springer US
Citation
ETINGOF, P. and NEGRON, C. 2022. "POINTED HOPF ACTIONS ON CENTRAL SIMPLE DIVISION ALGEBRAS."
Version
Author's final manuscript
Abstract
Abstract
We examine actions of finite-dimensional pointed Hopf algebras on central simple division algebras in characteristic 0. (By a Hopf action we mean a Hopf module algebra structure.) In all examples considered, we show that the given Hopf algebra does admit a faithful action on a central simple division algebra, and we construct such a division algebra. This is in contrast to earlier work of Etingof and Walton, in which it was shown that most pointed Hopf algebras do not admit faithful actions on fields. We consider all bosonizations of Nichols algebras of finite Cartan type, small quantum groups, generalized Taft algebras with non-nilpotent skew primitive generators, and an example of non-Cartan type.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
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DOI of Published Version
https://doi.org/10.1007/s00031-021-09690-9
