Kloosterman Centennial Celebration
Leiden, April 7, 2000
B. de Smit, H.W. Lenstra, J.P. Murre, R. Tijdeman
Number theory workshop
Lorentz Center, Leiden, June 26-30, 2000
P. Stevenhagen, B. de Smit
Algorithmic Number Theory Symposium (ANTS IV)
Leiden, July 2-7, 2000
P. Stevenhagen, H. te Riele, B. de Smit
Pi in de Pieterskerk
Leiden, July 5, 2000
H.W. Lenstra, C. Zaal
Explicit methods in number theory
Oberwolfach, Germany, July 2001
H.W. Lenstra
L-functions from algebraic geometry (workshop)
Leiden, September 17-21, 2001
H.W. Lenstra, P. Stevenhagen
Effective methods for Diophantine equations
Debrecen, Hungary, October 22-26, 2001
R. Tijdeman
Anabelian number theory and geometry (workshop)
Leiden, December 3-5, 2001
P. Stevenhagen