Mathematics Colloquia and Seminars

Return to Colloquia & Seminar listing

On Stein Fillings of a Contact 3-Manifold


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.