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SUMMARY:Universal L2-torsion for free-by-cyclic groups - Dawid Kielak (Uni
 versität Bielefeld )
DTSTART:20170620T090000Z
DTEND:20170620T100000Z
UID:TALK73001@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:The universal L2-torsion\, introduced by Friedl and L&uuml\;ck
 \, allows for an extension of the Thurston norm from the setting of 3-mani
 folds to that of free-by-cyclic groups. We will discuss this extension\, a
 nd show that this norm and the Alexander norm for F2-by-Z satisfy an inequ
 ality analogous to the one satisfied by the Thurston and Alexander norms o
 n 3-manifolds. We will also discuss the relationship between the universal
  L2-torsion and the Bieri-Neumann-Strebel invariants.<br><br>This is joint
  work with Florian Funke.
LOCATION:Seminar Room 1\, Newton Institute
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