*********************************** * Princeton Discrete Math Seminar * *********************************** Date: Thursday 20th April, 3:00 in Fine Hall 224. Speaker: Vaidy Sivaraman (U. Binghampton) Title: Antivoltages for groups of small order Let G be a group. A G-antivoltage is a function from the set of oriented edges of a graph to G such that the product along any cycle is not the identity. Given a group G of order up to and including six, we characterize the graphs that have G-antivoltages and also give the list of minor-minimal graphs that have no G-antivoltages. This is joint work with Daniel Slilaty. Next week: June Huh Anyone wishing to be added to or removed from this mailing list should contact Paul Seymour (pds@math.princeton.edu)