*********************************** * Princeton Discrete Math Seminar * *********************************** Speaker: Margaret Readdy, University of Kentucky Thursday 27th September, 3:00 in Fine Hall 224. Title:  Geometric proofs of some combinatorial identities of Morel Using the algebraic and geometric combinatorics of the permutahedron, we give proofs of combinatorial identities which arise in the technical heart of Morel's computation of the intersection cohomology of Shimura varieties. This is joint work with Richard Ehrenborg and Sophie Morel. No prior background will be assumed. ---------------------------------- Next week: Michael Simkin Anyone wishing to be added to or removed from this mailing list should contact Paul Seymour (pds@math.princeton.edu)