On Hopf Algebra Extensions Arising from Semi-Direct Products of Groups

  • Mitja Mastnak
Part of the Mathematics and Its Applications book series (MAIA, volume 555)


Hopf algebra extensions arising from a matched pair of groups were intro­duced by G.I. Kac ([Kac] ). He established an exact sequence (the Kac sequence) that connects group cohomology and Hopf algebra extensions. This was re­cently considered and generalized by other authors (for instance A. Masuoka in [Mal], [Ma2]).


Hopf Algebra Cohomology Group Matched Pair Cohomology Class Semidirect Product 
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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • Mitja Mastnak
    • 1
  1. 1.Department of Mathematics and StatisticsDalhousie UniversityHalifaxCanada

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