Concordance maps in knot Floer homology
Andras Juhasz (University of Oxford)
Monday 26th October, 2015 16:00-17:00 Maths 522
I am going to discuss the maps induced on knot Floer homology by decorated concordances. These preserve the Alexander and Maslov gradings, and are always non-vanishing as they induce a morphism of the spectral sequences to Z.
Using this, we define an invariant of slice disks, and obstruct the existence of invertible concordances.
This is joint work with Marco Marengon.