Departmental Colloquium

Date: Tuesday, Mar 6, 2001

Time: 4:15PM

Location: JWB 335

Selman Akbulut

Michigan State

Title	Lefschetz fibrations and Stein surfaces
Abstract	We will discuss some geometric structures on smooth 4-manifolds as a tool to understand their topology. For example, every closed smooth 4-manifold can be decomposed as a union of two Stein surfaces, and a Stein surface is nothing more than a Lefschetz fibration on a 2-disk.

Topology