Link Floer homology and the Thurston norm

Geometry & Topology
Event time: 
Thursday, March 30, 2006 - 11:30am to 12:30pm
431 DL
Peter Ozsvath
Speaker affiliation: 
Columbia University
Event description: 

Heegaard Floer homology can be used to define an invariant for links in the three-sphere, whose graded Euler characteristic is the multi-variable Alexander polynomial. I will describe this invariant and some of its properties. This invariant captures the Thurston norm of the link complement. These results are joint work with Zoltan Szabo.