L2-invisibility and a class of local similarity groups
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Datum:
18.04.2013
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Referent:
Werner Thumann
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Zeit:
14:00 Uhr
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In this talk we present a certain class of local similarity groups which are L^2-invisible, i.e. the (non-reduced) group homology of the regular unitary representation vanishes in all degrees. This class contains groups of type FP_\infty, e.g. Thompson's group V and Nekrashevych-Röver groups. They yield counterexamples to a generalized zero-in-the-spectrum conjecture for groups of type FP_\infty. This is joint work with Roman Sauer.
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Ort:
Raum 1C-04
im Allianzgebäude (05.20)