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VERSION:2.0
PRODID:-//University of Liverpool Computer Science Seminar System//v2//EN
BEGIN:VEVENT
DTSTAMP:20260922T121238Z
UID:Seminar-MIF-1447@lxserverM.csc.liv.ac.uk
ORGANIZER:CN=Othon Michail:MAILTO:Othon.Michail@liverpool.ac.uk
DTSTART:20250213T140000
DTEND:20250213T150000
SUMMARY:MIF Series
DESCRIPTION:Louis H Kauffman: Knots, Vortices and Reconnection\n\nThis talk will discuss a topological model for reconnection of (knotted) vortices and define the reconnection number for a knotted vortex as the least number of reconnections needed to unknot the knot. Using methods of knot cobordism, Khovanov homology and the Rasmussen invariant, we prove that the reconnection number of a positive knot or link is equal to the twice the genus of its Seifert spanning surface. We then generalize these results to virtual knots and links. The talk will discuss these results and open questions, including the physical meaning of Khovanov homology.\n\nhttps://www.csc.liv.ac.uk/research/seminars/abstract.php?id=1447
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