Hopf automorphisms and twisted extensions Academic Article uri icon


  • We give some applications of a Hopf algebra constructed from a group acting on another Hopf algebra [Formula: see text] as Hopf automorphisms, namely Molnars smash coproduct Hopf algebra. We find connections between the exponent and FrobeniusSchur indicators of a smash coproduct and the twisted exponents and twisted FrobeniusSchur indicators of the original Hopf algebra [Formula: see text]. We study the category of modules of the smash coproduct.

published proceedings

  • Journal of Algebra and Its Applications

author list (cited authors)

  • Montgomery, S., Vega, M. D., & Witherspoon, S.

citation count

  • 6

complete list of authors

  • Montgomery, Susan||Vega, Maria D||Witherspoon, Sarah

publication date

  • August 2016