We show that every compact topological 4-manifold can be presented by means of a finite amount of data. This is a joint work with Mike Freedman.
Links:
[1] http://www.mpim-bonn.mpg.de/taxonomy/term/39
[2] http://www.mpim-bonn.mpg.de/node/3444
[3] http://www.mpim-bonn.mpg.de/TopologySeminar