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math.OA2026
Spectral geometry of saturated Fell bundles
Stefan Wagner
Let be a saturated Fell bundle over a countable discrete group, equipped with a spectral triple. We give explicit sufficient conditions for lifting this…
math.RA2026
Factor systems and geometric structures of strongly graded rings
Joakim Arnlind, Stefan Wagner
Graded rings provide a natural algebraic framework for encoding symmetry via decompositions into homogeneous components indexed by a group, together with multiplication rules refle…
math.OA2026
Weak Centrality of unital C(X)-algebras
Bharat Talwar, Prahlad Vaidyanathan, Stefan Wagner
This paper establishes a fibrewise characterization of weak centrality for unital -algebras whose defining homomorphism maps onto the center: such an algebra is weakly…