Answering a question of Shuzhou Wang we give a description of quantum groups of Podleś as universal compact quantum groups acting on the -algebra and preserving the Powers state. We use this result to give a complete classification of all continuous compact quantum group actions on .
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Piotr M. Sołtan, Quantum groups and quantum group actions on . J. Noncommut. Geom. 4 (2010), no. 1, pp. 1–28DOI 10.4171/JNCG/48