Department of Mathematics


  •  Nathaniel Bottman, Max Planck Institute
  •  What analysis, combinatorics, and quilted spheres can tell us about symplectic geometry
  •  01/10/2023
  •  4:10 PM - 5:00 PM
  •  C304 Wells Hall (Virtual Meeting Link)
  •  Sabrina M Walton (

A central tool for studying symplectic manifolds is the Fukaya category. In this talk, I will describe my program to relate the Fukaya categories of different symplectic manifolds. The key objects are "witch balls", which are coupled systems of PDEs whose domain is the Riemann sphere decorated with circles and points, and "2-associahedra", the configuration spaces of these domains. I will describe applications to symplectic geometry and algebraic geometry, and highlight the role of degenerating families of elliptic PDEs.



Department of Mathematics
Michigan State University
619 Red Cedar Road
C212 Wells Hall
East Lansing, MI 48824

Phone: (517) 353-0844
Fax: (517) 432-1562

College of Natural Science