Tame subsets of spheres
Dr B. Owens (University of Glasgow)
Monday 18th February, 2013 16:00-17:00 Mathematics 203
A subset V of the unit sphere Sn-1 is called m-tame if every subset of V containing m or fewer points is contained in an open hemisphere. I will discuss the group theoretic motivation for this condition and give some results about n-tame subsets of Sn-1. This is joint work with Bieri and Kropholler.