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DTSTART:19700329T010000
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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:Universal L2-torsion for free-by-cyclic groups - D
awid Kielak (Universität Bielefeld )
DTSTART;TZID=Europe/London:20170620T100000
DTEND;TZID=Europe/London:20170620T110000
UID:TALK73001AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/73001
DESCRIPTION:The universal L2-torsion\, introduced by Friedl an
d Lü\;ck\, allows for an extension of the Thur
ston norm from the setting of 3-manifolds to that
of free-by-cyclic groups. We will discuss this ext
ension\, and show that this norm and the Alexander
norm for F2-by-Z satisfy an inequality analogous
to the one satisfied by the Thurston and Alexander
norms on 3-manifolds. We will also discuss the re
lationship between the universal L2-torsion and th
e Bieri-Neumann-Strebel invariants.
This is
joint work with Florian Funke.
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:INI IT
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