Seminar series
Date
Mon, 31 Jan 2011
Time
17:00 -
18:00
Location
L3
Speaker
Misha Kapovich
Organisation
University of California
I will explain how to embed arbitrary RAAGs (Right Angled
Artin Groups) in Ham (the group of hamiltonian symplectomorphisms of
the 2-sphere). The proof is combination of topology, geometry and
analysis: We will start with embeddings of RAAGs in the mapping class
groups of hyperbolic surfaces (topology), then will promote these
embeddings to faithful hamiltonian actions on the 2-sphere (hyperbolic
geometry and analysis).