A Galois Correspondence for II1 Factors
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Dmitri Nikshych; Leonid Vainerman
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Article
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2000
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Elsevier Science
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English
β 273 KB
We establish a Galois correspondence for finite quantum groupoid actions on II 1 factors and show that every finite index and finite depth subfactor is an intermediate subalgebra of a quantum groupoid crossed product. Moreover, any such subfactor is completely and canonically determined by a quantum