Place: Fields Institute (Stewart Library)

Date: May 19, 2017 (13:30-15:00)

Speaker: Dana Bartosova, CMU

Title: When can we act freely?

Abstract: A topological group admits a free action if there is a compact

Hausdorff space on which the group acts without fixed points. I will

discuss this notion and explain how to translate it into colourings of

graphs and Ramsey type properties.