Previous organizational matters

  • I was member (from 2005) and chair (from 2010) of the Leiden Mathematical Institute's PR Committee.
  • I have organized the semi-annual Diamant symposium from 2010--2019.
  • I have organized several of the Diamant mini-symposia at the NMC (2011, 2012, 2013, 2014, 2018).
  • Effective Methods for Diophantine Problems: a conference at the Lorentz Center (June 2018, with Attila Bérczes, Bas Edixhoven and Kálmán Győry)
  • Heights and moduli spaces: a conference at the Lorentz Center (June 2013, with Gerard Freixas i Montplet and Gerard van der Geer)
  • Geometry and arithmetic: a conference on the occasion of Gerard van der Geer's 60th birthday (September 2010, with Carel Faber and Gavril Farkas). Proceedings volume has appeared in the EMS Series of Congress Reports
  • Intercity Seminar Algebraic Geometry (Fall 2010, with Jochen Heinloth)