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Actions of compact quantum groups on |
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| Authors: | Marcin Marciniak |
| Affiliation: | Institute of Mathematics, Gdansk University, Wita Stwosza 57, 80-952 Gdansk, Poland |
| Abstract: | In this paper we investigate a structure of the fixed point algebra under an action of compact matrix quantum group on a  -algebra  . We also show that the categories of  -comodules in  and inner endomorphisms restricted to the fixed point algebra coincide when the relative commutant of the fixed point algebra is trivial. Next we show a version of the Tannaka duality theorem for twisted unitary groups. |
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