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Tuesday 29 July at 2:00 pm in the Small Lecture Theatre, Department of Statistics

There will be a reception following the talk in the Ground Floor Social Area. There is no need to register – just join us on the day.

Tue, 28 Oct 2025
16:00
C3

On the classification of quantum lens spaces

Sophie Zegers
(TU Delft)
Abstract
In the study of noncommutative geometry, various of classical spaces have been given a quantum analogue. A class of examples are the quantum lens spaces described by Hong and Szymański as graph C*-algebras. The graph C*-algebraic description has made it possible to obtain important information about their structure and to work on classification. Moreover, every quantum lens space comes with a natural circle action, leading to an equivariant isomorphisms problem.
In this talk, Sophie Zegers will give an introduction on how to classify quantum lens spaces and how to obtain a number theoretic invariant in low dimensions and will briefly present some results from joint work with Søren Eilers on the equivariant isomorphism problem of low dimensional quantum lens spaces.
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