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Distinguishing topologically and smoothly doubly slice knots


Speaker: Jeffrey Meier, University of Texas, Austin
Location: 2112 MSB
Start time: Tue, Feb 11 2014, 4:10PM

The purpose of this talk is to show the existence of an infinite family of smoothly slice knots that are topologically doubly slice, but not smoothly doubly slice. After outlining what is known about doubly slice knots, I will present some sufficient conditions for a knot to be topologically doubly slice, and show how the knots in question satisfy these criteria. Then, I will outline how the correction terms coming from Heegaard Floer homology can be used to obstruct these knots from being smoothly doubly slice. Along the way, we will encounter some very interesting open questions related to the study of doubly slice knots.