Introductory talk.Contact: T. Barthel, V. Ozornova, Aru Ray, Peter Teichner
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