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math.OA2017★ 4 cited
Noncommutative Coverings of Quantum Tori
Kay Schwieger, Stefan Wagner
We introduce a framework for coverings of noncommutative spaces. Moreover, we study noncommutative coverings of irrational quantum tori and characterize all such coverings that are…
math.OA2017★ 2 cited
Part III, Free Actions of Compact Quantum Groups on C*-Algebras
Kay Schwieger, Stefan Wagner
We study and classify free actions of compact quantum groups on unital C*-algebras in terms of generalized factor systems. Moreover, we use these factor systems to show that all fi…