Higher ribbon graphs

Princeton/IAS Symplectic Geometry Seminar
Topic:Higher ribbon graphs
Speaker:David Nadler
Affiliation:University of California, Berkeley
Date:Monday, March 12
Time/Room:4:00pm - 5:00pm/Simonyi Hall 101
Video Link:https://video.ias.edu/puias/2018/0312-DavidNadler

Ribbon graphs capture the topology of open Riemann surfaces in an elementary combinatorial form. One can hope this is the first step toward a general theory for open symplectic manifolds such as Stein manifolds. We will discuss progress toward such a higher dimensional theory (joint work with Alvarez-Gavela, Eliashberg, and Starkston), and in particular, what kind of topological spaces might generalize graphs. We will also discuss applications to the calculation of symplectic invariants.