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Cleft extensions of weak Hopf algebras

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 نشر من قبل Jorge Alberto Guccione
 تاريخ النشر 2018
  مجال البحث
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In this paper we study the theory of cleft extensions for a weak bialgebra H. Among other results, we determine when two unitary crossed products of an algebra A by H are equivalent and we prove that if H is a weak Hopf algebra, then the categories of H-cleft extensions of an algebra A, and of unitary crossed products of A by H, are equivalent.



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