Nicolas Monod (Universität Genf): Littlewood and large forest

Donnerstag, 11.11.2010 16:30 im Raum M5
Mathematik und Informatik

" Motivated by a classical result of Szökefalvi-Nagy in functional analysis, Dixmier asked in 1950 which group representations can be made unitary. This question is still open, but I will report on some progress obtained with Epstein and Ozawa. We approach the question with ideas borrowed from XIXth century electricity theory as well as from contemporary percolation theory. As a result, we obtain notably non-unitarizable representations for Burnside groups and a new characterization of amenability. The talk will be expository."


Angelegt am Dienstag, 26.10.2010 10:01 von gstei_02
Geändert am Mittwoch, 03.11.2010 16:32 von gstei_02
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Kolloquium Wilhelm Killing