Semiinvariants for hopf algebra actions

Miriam Cohen, Serban Raianu, Sara Westreich

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Let H be a Hopf algebra and M a representation or a corepresentation of H. In this paper we study semiinvariants of M. This notion generalizes the known concept of weight spaces in the context of representations of Lie algebras. Our best results are attained for pointed Hopf algebras, and semiinvariants which are related to the coradical filtration of H.

Original languageEnglish
Pages (from-to)279-306
Number of pages28
JournalIsrael Journal of Mathematics
Issue number1-3
StatePublished - 1 Jan 1994

ASJC Scopus subject areas

  • Mathematics (all)


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