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math.OA2025
Noncommutative principal bundles and central extensions
Stefan Wagner
Motivated by the classical theory of spin structures, we develop a theory for lifting free C-dynamical systems, a.k.a. noncommutative principal bundles, along central extension…
math.OA2025
Saturated Fell bundles and their classification
Natã Machado, Stefan Wagner
We present a comprehensive classification theory for saturated Fell bundles over locally compact groups, utilizing data associated with their base group and unit fiber. This framew…