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Galois extensions for coquasi-Hopf algebras

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 نشر من قبل Balan Adriana
 تاريخ النشر 2008
  مجال البحث
والبحث باللغة English
 تأليف Adriana Balan




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The notions of Galois and cleft extensions are generalized for coquasi-Hopf algebras. It is shown that such an extension over a coquasi-Hopf algebra is cleft if and only if it is Galois and has the normal basis property. A Schneider type theorem is proven for coquasi-Hopf algebras with bijective antipode. As an application, we generalize Schauenburgs bialgebroid construction for coquasi-Hopf algebras.



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