Semiprime crossed products over copointed Hopf algebras

Quinn, Declan; Raianu, Şerban

doi:10.1090/S0002-9939-02-06516-4

Semiprime crossed products over copointed Hopf algebras
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by Declan Quinn and Şerban Raianu PDF

Proc. Amer. Math. Soc. 131 (2003), 29-33 Request permission

Abstract:

We prove a result on the transfer of essentiality of extensions of modules over subnormalizing extensions of rings, then apply it to look at the semiprimeness of Hopf-Galois extensions, in particular that of crossed products.

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