## Model Theory Seminar - Bradd Hart - The Urysohn Sphere: an apology

- Calendar
- Mathematics & Statistics

- Date
- 09.13.2019 11:30 am - 12:30 pm

### Description

HH - 410

Speaker: Bradd Hart (McMaster University)

Title: The Urysohn Sphere: an apology

Abstract: I will discuss the conjecture that the continuous theory of the Urysohn sphere is pseudo-finite. Previously it had been announced (in this seminar, by this speaker) that is was pseudofinite because the almost sure theory of finite metric spaces is the theory of the Urysohn sphere. This is now known to be false. I will present the almost sure theory of finite metric spaces and some of the implications of this work.