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Journal of Algebra

EDITOR-IN-CHIEF Michel Broué Journal of Algebra Institut Henri Poincaré, 11, rue Pierre et Marie Curie, F-75005 Paris, France E-mail: [email protected] EDITORIAL BOARD Eva Bayer-Fluckiger Robert Kottwitz Paul Roberts Département de The University of Chicago* University of Utah* Mathématiques 5734 University Avenue 155 S 1400 E, Rm 233 École Polytechnique Chicago, Illinois 60637 Salt Lake City Utah 84112-0090 Federale de Lausanne Leonard Lipshitz 1015 Lausanne Purdue University* Switzerland Jan Saxl West Lafayette DPMMS Indiana 47907 Georgia Benkart CMS Wilberforce Road University of Wisconsin* Peter Littelmann Madison, Wisconsin 53706-1388 Cambridge CB3 0WB Fachbereich Mathematik England Universität Wuppertal Corrado de Concini Gauss-Strasse 20 Leonard L. Scott, Jr. Dipto. di Matematica— 42097 Wuppertal University of Virginia* “Guido Castelnuovo” Germany Mathematics–Astronomy Bldg. Università di Roma— Charlottesville Alexander Lubotzky “La Sapienza” Virginia 22903-3199 Piazzale Aldo Moro 2 Institute of Mathematics 00185 Rome, Italy Hebrew University Wolfgang Soergel Jerusalem 91904 Mathematisches Institut Paul Flavell Israel Eckerstrasse 1 School of Mathematics Richard Lyons D-79104 Freiburg and Statistics Rutgers University* Germany University of Birmingham Edgbaston Hill Center J.T. Stafford Birmingham B15 2TT, UK 110 Frelinghuysen Road University of Michigan* Piscataway, New Jersey 08854 525 East University Avenue Kent R. Fuller Geoffrey Mason Ann Arbor University of Iowa* University of California* Michigan 48109-1109 Iowa City, Iowa 52242 Santa Cruz Gernot Stroth California 95064 A.W. Goldie Martin-Luther-Universität The University of Leeds* Susan Montgomery Halle–Wittenberg Leeds LS2 9JT, England University of Southern Fachbereich Mathematik California* und Informatik T. E . H a l l Los Angeles Institut für Algebra und Monash University* California 90089-1113 Geometrie Clayton, Victoria 3168 06099 Halle, Germany Australia Laurent Moret-Bailly IRMAR J. Tits Collège de France Craig Huneke Université de Rennes 1 Campus de Beaulieu 11, place Marcelin Berthelot University of Kansas* 75231 Paris cedex 05 Lawrence, Kansas 66045 F-35042 Rennes cedex France France Gordon James Alexander Premet Michel van den Bergh Imperial College of Science University of Manchester* Department WNI and Technology* Oxford Road Limburgs Universitair Huxley Building M13 9PL Centrum Queen’s Gate United Kingdom Universitaire Campus London SW7 2BZ, England 3590 Diepenbeek H.A. Priestley Belgium Masaki Kashiwara Mathematical Institute Research Institute for Oxford University Efim Zelmanov Mathematical Sciences 24/29 St. Giles University of California* Kyoto, 606-8502 Oxford OX1 3LB San Diego Japan England La Jolla, California 92093-0112 FOUNDING EDITOR: Graham Higman, 1964–1984 EDITOR-IN-CHIEF: Walter Feit, 1985–2000 *Department of Mathematics