A tale of two compactifications
Event details
| Date | 08.05.2013 |
| Hour | 14:15 › 16:00 |
| Speaker | Michael Thaddeus, Columbia University, visiting EPFL |
| Location | |
| Category | Conferences - Seminars |
We will examine two compactifications of reductive groups with
very attractive properties, namely the wonderful compactification of
PGL(n,C) and the Kausz compactification of GL(n,C). We will explore their
connections to each other and to moduli problems in several corners of
mathematics: spaces of broken flows in Morse theory, spaces of stable maps
to Grassmannians, and spaces of coherent sheaves on singular Riemann
surfaces. Then we will see how parts of this circle of ideas have been
generalized, in joint work with Johan Martens, to arbitrary reductive
groups.
very attractive properties, namely the wonderful compactification of
PGL(n,C) and the Kausz compactification of GL(n,C). We will explore their
connections to each other and to moduli problems in several corners of
mathematics: spaces of broken flows in Morse theory, spaces of stable maps
to Grassmannians, and spaces of coherent sheaves on singular Riemann
surfaces. Then we will see how parts of this circle of ideas have been
generalized, in joint work with Johan Martens, to arbitrary reductive
groups.
Practical information
- General public
- Free