The Khovanov homology of slice disks

Isaac Sundberg, Bryn Mawr College
Fine Hall 314

In-Person and Online Talk

Zoom Link:

To a cobordism between links, Khovanov homology assigns a linear map that is invariant under boundary-preserving isotopy of the cobordism. In this talk, we study those maps arising from surfaces in the 4-ball and apply our findings to existence and uniqueness questions regarding slice disks bounding a given knot. This reflects joint works with Jonah Swann and Kyle Hayden.