Maciej Malicki: Groups of isometries of Polish ultrametric spaces
10/11/14 15:07
Tuesday, November 18, 2014 17:15
Room: D1-215
Speaker: Maciej Malicki
Title: Groups of isometries of Polish ultrametric spaces
Abstract. We will characterize Polish ultrametric spaces whose isometry groups have a neighborhood basis at the identity consisting of open subgroups with ample generics. We will also define Polish ultrametric W-spaces and give a characterization of W-spaces whose isometry groups have uncountable strong cofinality.
Room: D1-215
Speaker: Maciej Malicki
Title: Groups of isometries of Polish ultrametric spaces
Abstract. We will characterize Polish ultrametric spaces whose isometry groups have a neighborhood basis at the identity consisting of open subgroups with ample generics. We will also define Polish ultrametric W-spaces and give a characterization of W-spaces whose isometry groups have uncountable strong cofinality.