Maciej Malicki

# Maciej Malicki: Groups of isometries of Polish ultrametric spaces

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.