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Smooth concordance bounds on wrapping numbers


Speaker: Marco Golla, Université de Nantes
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Location: 2112 MSB
Start time: Tue, Oct 30 2018, 1:00PM

Suppose that K is a knot in the solid torus T. A natural invariant of K is the wrapping number, i.e. the minimal number intersections with a meridional disc of T, up to isotopy. I will talk about an analogue 4-dimensional question for knots up to concordance (i.e., essentially, up to an annulus in T x [0,1]). The main tool will come from (twisted) correction terms in Heegaard Floer homology. This is joint work with Daniele Celoria.