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Elke Enning

Sergio Giron Pacheco (Oxford): Anomalous symmetries and invariants of operator algebras. Oberseminar C*- Algebren

Tuesday, 13.12.2022 16:15 im Raum SRZ 216/217

Mathematik und Informatik

An anomalous symmetry of an operator algebra A is a mapping from a group G to the automorphism group of A which is multiplicative up to inner automorphisms of A. This can be rephrased as the action of a pointed tensor category on A. Starting from the basics, I will introduce anomalous actions from different perspectives and discuss some history of their study in the literature. I will then discuss their existence and classification questions on simple C*-algebras. For these questions, it will be important to consider K-theoretic invariants of the algebras.



Angelegt am Tuesday, 20.09.2022 14:10 von Elke Enning
Geändert am Tuesday, 06.12.2022 11:47 von Elke Enning
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