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SUMMARY:Squeezed knots - Andrew Lobb (Durham)
DTSTART:20230301T160000Z
DTEND:20230301T170000Z
UID:TALK197896@talks.cam.ac.uk
CONTACT:Oscar Randal-Williams
DESCRIPTION:(Joint work with Peter Feller and Lukas Lewark). A knot is cal
 led squeezed if it is a slice of a minimal genus\, oriented\, connected co
 bordism from a positive to a negative torus knot. Many popular classes of 
 knots are squeezed. At most six knots of ten or fewer crossings are not sq
 ueezed. The Lipshitz-Sarkar stable homotopy type for Khovanov homology pro
 vides a (surprisingly?) effective means of obstructing knots from being sq
 ueezed. I'll explain all this and also advertize a cash prize of 271 swiss
  francs.
LOCATION:MR13
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