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Tannaka-Krein duality for compact matrix pseudogroups. Twisted SU(N) groups. (English) Zbl 0664.58044
The notion of concrete monoidal \(W^*\)-category is introduced and investigated. A generalization of the Tannaka-Krein duality theorem is proved. It leads to new examples of compact matrix pseudogroups. Among them we have twisted SU(N) groups denoted by \(S_{\mu}U(N)\). It is shown that the representation theory for \(S_{\mu}U(N)\) is similar to that of SU(N): irreducible representations are labeled by Young diagrams and formulae for dimensions and multiplicity are the same as in the classical case.

58H05 Pseudogroups and differentiable groupoids
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