Thursday 29th May 17.30 Room: MS.02

Martin Hairer

Taming infinities

Abstract: Some physical and mathematical theories have the unfortunate feature that if one takes them at face value, many quantities of interest appear to be infinite! Various techniques, usually going under the common name of “renormalisation” have been developed over the years to address this, allowing mathematicians and physicists to tame these infinities. We will dip our toes into some of the mathematical aspects of these techniques and we will see how they have recently been used to make precise analytical statements about the solutions of some equations whose meaning was not even clear until now.

The lecture will be followed by a drinks reception in the Street at 18:30 for all lecture attendees.

At 19:00, food and drink will be available in the Mathematics Institute Common Room for Department and Workshop members only.