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SUMMARY:William Ballinger (Princeton)
DTSTART:20201002T220000Z
DTEND:20201002T230000Z
DTSTAMP:20260423T005725Z
UID:caltechGT/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/caltechGT/1/
 ">Concordance invariants from the E(-1) spectral sequence</a>\nby William 
 Ballinger (Princeton) as part of Caltech geometry/topology seminar\n\n\nAb
 stract\nMany recent concordance invariants of knots come from perturbing t
 he differential on a knot homology theory to get a complex with trivial ho
 mology but an interesting filtration. I describe the invariant coming from
  Rasmussen's E(-1) spectral sequence from Khovanov homology in this way\, 
 and show that it gives a bound on the nonorientable slice genus.\n
LOCATION:https://researchseminars.org/talk/caltechGT/1/
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