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On Stein Fillings of a Contact 3-Manifold
Geometry/Topology| Speaker: | Rostislav Matveyev, UC Davis |
| Location: | 693 Kerr |
| Start time: | Wed, May 1 2002, 4:10PM |
I would like to address a question whether there is an a priori bound on the topology (Betti numbers, for example) of a Stein filling of a given contact 3-manifold. This reduces to a question of existence of a quasi-homomorphism on the mapping class group of an oriented surface with nonempty boundary, satisfying some additional conditions. This is a work in progress.