Speaker: Professor Jyotirmoy Sengupta, T.I.F.R. (Tata Institute of Fundamental Research) Title: Nonvanishing of Siegel Poincare series in degree 2 Venue: B1044 Zhixin Building Time:   14:00-15:00, May 31, 2012 Abstract:   We show that certain Poincare series of exponential type and degree 2 do not vanish identically. Our results generalise those of Rankin in the degree one case and are currently the best possible.