Aarhus University Seal / Aarhus Universitets segl

Khovanov homology and the symmetry group of a knot

Liam Watson
(University of Glasgow)
Seminar
Fredag, 4 oktober, 2013, at 15:30-16:30, in Aud. D1 (1531-113)
Abstrakt:
This talk will introduce a new invariant of tangles derived from Khovanov homology. As application, this may be used to construct an invariant of strong inversions of knots in the three-sphere and, in turn, produces an object that is quite sensitive to non-amphicheirality. Surprisingly, this new invariant picks up information that is not detected by the Jones polynomial or, more generally, Khovanov homology.
Organiseret af: QGM
Kontaktperson: Jørgen Ellegaard Andersen