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SUMMARY:Detecting the Thurston norm via twisted Reidemeister torsion - Ada
 m Baranowski (DPMMS)
DTSTART:20171124T150000Z
DTEND:20171124T160000Z
UID:TALK93913@talks.cam.ac.uk
CONTACT:Nils Prigge
DESCRIPTION:Given a knot we can consider two classical invariants associat
 ed to it\; its genus and Alexander polynomial. The degree of the latter gi
 ves a lower bound for the genus. However\, the Alexander polynomial often 
 fails to detect the genus of a knot. This motivates a generalization of it
  to a twisted invariant that also depends on a choice of a representation 
 of the knot group. I will discuss relations between such an invariant and 
 the genus. If time permits I will discuss a further generalization to the 
 case of links and its relation with the Thurston norm on a link complement
  in the 3-sphere
LOCATION:MR13
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