Examples of support varieties for Hopf algebras with noncommutative tensor products

Dave Benson, Sarah Witherspoon

Research output: Contribution to journalArticle

7 Citations (Scopus)


The representations of some Hopf algebras have curious behavior: Nonprojective modules may have projective tensor powers, and the variety of a tensor product of modules may not be contained in the intersection of their varieties. We explain a family of examples of such Hopf algebras and their modules, and classify left, right, and two-sided ideals in their stable module categories.
Original languageEnglish
Pages (from-to)513-520
Number of pages8
JournalArchiv der Mathematik
Issue number6
Publication statusPublished - 26 Jun 2014


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