2018
Dec
05

# Logic Seminar - Omer Ben-Neria

11:00am to 1:00pm

## Location:

Ross 63

**Hjorth's theory of turbulence**

The purpose of this talk is to survey several results from Hjorth's theory of turbulent polish group actions.

We will start by discussing certain classification problems associated with Borel equivalence relations, and present the notions of Borel reductions and smooth relations, and the E_0 dichotomy theorem of Harrington-Kechris-Louveau.