Speaker: Prof Geoffrey Grimmett (Stats Lab)
Venue: Winstanley Lecture Theatre
Time: 5/3/2012 20:30, drinks from 20:15

Since its discovery around 1899, the star-triangle (or Y-Δ) transformation has become an important tool in the theory of disordered physical systems. It turns out in addition to have an important connection to tilings of the plane.