Date: Wed, 24 Jun 1998 11:08:48 +0200 From: Rudger Kieboom Subject: categories: change of e-mail address Dear All, My new e-mail address is a simplification of the old one. It now reads: rkieboom@vub.ac.be Rudger Kieboom Department of Mathematics Vrije Universiteit Brussel Pleinlaan 2, F10 B-1050 Brussels Belgium