The Hahn Lectures are held every year at the Mathematics department, in memory of Frank J. Hahn, a much beloved faculty member who died at a young age. This year's lectures were given by Matt Baker, Georgia Tech.Previous lectures:Fall 2015 (14, 15, 16 December) Amie Wilkinson, Univ. of WisconsinFall 2014 (13, 14, 15, October) Elon Lindenstrauss, Hebrew UniversityFall 2013 (29, 30, 31 October) Kevin Costello, Northwestern UniversitySpring 2013 (16, 17, 18 April) Burt Totaro, UCLASpring 2012 (1, 2, 3 May) Mladen Bestvina, Univ. of UtahSpring 2011 (22, 23, 24 February) Matt Emerton, Northwestern UniversitySpring 2009 (9, 10, 11 February) Ngo Bao Chau, Universite Paris-SudFall 2007 (15, 16, 17 October) Jeffrey D. Adams, University of MarylandSpring 2006 (10, 11, 12 April) Philippe Michel, Universite de Montpellier II