Stasheff's associahedra and R.J.Thompson's groups
Event details
| Date | 14.06.2013 |
| Hour | 14:15 › 15:30 |
| Speaker | Ariadna Fossas Tenas (EPFL) |
| Location |
MA 12
|
| Category | Conferences - Seminars |
In this talk we will construct an infinite dimensional cellular complex C that can be seen as a generalisation of the associahedron for an infinitely sided convex polygon. To give an idea, the vertices of C are in bijection with all possible triangulations of the circle which differ from a given one only in finitely many diagonals. The complex C is contractible and its group of combinatorial automorphisms is related to Thompson's group T, which is an infinite finitely presented simple group of homeomorphisms of the circle.
Links
Practical information
- Informed public
- Free
Organizer
- Kathryn Hess Bellwald