What do rings have to say about lattice greens functions?
by Dr Richard Brak
Abstract: Prompted by Tonys talk last week I wondered what could be said in general about the class of functions lattice greens function belong to. There are two theorems that can be proved algebraically using ring theory. I'll discuss these, their connection to the constant term representation and, time permitting a non-commutative constant term generalisation. The latter is interesting (to me at least) as it is related to free groups and a (slightly) unexpected path problem.
For More Information: contact: Mark Sorrell. email email@example.com