1. D. Borwein: Department of Mathematics University of Western Ontario London, Ontario N6A 5B7, Canada
2. J. M. Borwein: Department of Mathematics and Statistics Simon Fraser University Burnaby BC V5A 1S6, Canada
3. P. Borwein: Department of Mathematics and Statistics Simon Fraser University Bumaby, BC V5A 1S6, Canada
4. R. Girgensohn: Institut für Mathematik Medizinische Universität Lübeck P-23560 Lübeck GERMANY