2006 ASL European Summer Meeting (Logic Colloquium '06) Nijmegen, Netherlands July 27--August 2, 2006 The members of the Program Committee are: B. Cooper, S. Friedman, H. Geuvers, D. Macpherson, G. Mints, A. Pillay, M. Rathjen, R. Schindler, H. Schwichtenberg (Chair), R. Shore, W. Sieg, G. Sundholm, and J. Vaananen. The Local Organizing Committee includes: H. Geuvers (Chair), N. Messink, B. Spitters, and F. Wiedijk.