Managing Editors: Simon Donaldson s.donaldson@ic.ac.uk Victor Guillemin vwg@math.mit.edu Tomasz Mrowka mrowka@math.mit.edu Gang Tian tian@math.mit.edu Co-Editors: Denis Auroux auroux@math.mit.edu Paul Biran biranp@post.tau.ac.il Yakov Eliashberg eliash@math.stanford.edu Helmut H. W. Hofer hofer@cims.nyu.edu Frances C. Kirwan kirwan@maths.ox.ac.uk Jerrold E. Marsden marsden@cds.caltech.edu Marina Ratner UC Berkeley Dept of Mathematics Paul Seidel seidel@math.uchicago.edu Richard P. Stanley rstan@math.mit.edu Alan D. Weinstein alanw@math.berkeley.edu Shing-Tung Yau yau@math.harvard.edu Eduard J. Zehnder eduard.zehnder@math.ethz.ch