Frobenius Extensions and Weak Hopf Algeb
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Lars Kadison; Dmitri Nikshych
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Article
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2001
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Elsevier Science
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English
⚖ 211 KB
We study a symmetric Markov extension of k-algebras N → M, a certain kind of Frobenius extension with conditional expectation that is tracial on the centralizer and dual bases with a separability property. We place a depth two condition on this extension, which is essentially the requirement that th