Seminar series
Date
Wed, 19 Oct 2022
16:00
16:00
Location
L4
Speaker
Sam Fisher
Organisation
University of Oxford
We survey the theory of $\ell^2$-invariants, their applications in group theory and topology, and introduce a positive characteristic version of $\ell^2$-theory. We also discuss the Atiyah and Lück approximation conjectures, two of the central problems in this area.