Abstract
Given a unital \(*\)-algebra \(\mathscr {A}\) together with a suitable positive filtration of its set of irreducible bounded representations, one can construct a C\(^*\)-algebra \(A_0\) with a dense two-sided ideal \(A_c\) such that \(\mathscr {A}\) maps into the multiplier algebra of \(A_c\). When the filtration is induced from a central element in \(\mathscr {A}\), we say that \(\mathscr {A}\) is an s\(^*\)-algebra. We also introduce the notion of \(\mathscr {R}\)-algebra relative to a commutative s\(^*\)-algebra \(\mathscr {R}\), and of Hopf \(\mathscr {R}\)-algebra. We formulate conditions such that the completion of a Hopf \(\mathscr {R}\)-algebra gives rise to a continuous field of Hopf C\(^*\)-algebras over the spectrum of \(R_0\). We apply the general theory to the case of quantum \(GL(N,\mathbb {C})\) as constructed from the FRT-formalism.
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Dedicated to the memory of Étienne Blanchard.
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The work of K. De Commer was supported by the FWO Grant G.0251.15N, and this work is part of the project supported by the Grant H2020-MSCA-RISE-2015-691246-QUANTUM DYNAMICS.
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De Commer, K., Floré, M. The field of quantum \(GL(N,\pmb {\mathbb {C}})\) in the C\(^*\)-algebraic setting. Sel. Math. New Ser. 25, 3 (2019). https://doi.org/10.1007/s00029-019-0456-0
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DOI: https://doi.org/10.1007/s00029-019-0456-0
Keywords
- FRT quantum groups
- Quantized enveloping algebras
- Reflection equation algebra
- Locally compact quantum groups
- Deformation theory
- Continuous fields of C\(^*\)-algebras