When: Wednesday, April 10, 2013 3:15 PM - 4:15 PM
Where: Math Building : Room 3206
Event Type(s): Colloquium

Title: Entropy and L2 Torsion
Speaker: Hanfeng Li (SUNY at Buffalo)

Abstract: Given any countable discrete group G and any countable left module M of the integral group ring of G, one may consider the natural action of G on the Pontryagin dual of M. Under suitable conditions, the entropy of this action and the L2-torsion of M are defined. I will discuss the relation between the entropy and the L2-torsion and indicate how this confirms the conjecture of Wolfgang Luck that any nontrivial amenable group admitting a finite classifying space has trivial L2-torsion. This is joint work with Andreas Thom.


For more information, contact:
Linette Berry
Department of Mathematics
+1 301 405 5058

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