Editorial Office Institute of Mathematics University of Debrecen Pf. 12 4010 Debrecen Hungary E-mail: aeqmath@unideb.hu Honorary Editor-in-Chief János Aczél Department of Pure Mathematics University of Waterloo Waterloo, ON N2L 3G1 Canada Honorary Editor Ludwig Reich Institut für Mathematik Universität Graz Heinrichstrasse 36 8010 Graz Austria Editor-in-Chief Zsolt Páles Institute of Mathematics University of Debrecen Pf. 12 4010 Debrecen Hungary E-mail: pales@science.unideb.hu Managing Editor Attila Gilányi Faculty of Informatics University of Debrecen Pf. 12 4010 Debrecen Hungary E-mail: gilanyi@inf.unideb.hu Associate Managing Editor Jens Schwaiger Institut für Mathematik Universität Graz Heinrichstr. 36 8010 Graz Austria E-mail: jens.schwaiger@uni-graz.at Editors Claudi Alsina (Barcelona, Spain) Bruce Ebanks (Mississippi State, MS, USA) Gian-Luigi Forti (Milano, Italy) Detlef Gronau (Graz, Austria) Branko Grünbaum (Seattle, WA,USA) Hans Havlicek (Vienna, Austria) Morris W. Hirsch (Cross Plains, WI, USA) Katsuya Ishizaki (Minamisaitama Saitama, Japan) Christian Krattenthaler (Vienna, Austria) Ilpo Laine (Joensuu, Finland) Janusz Matkowski (Zielona Góra, Poland) Zenon Moszner (Kraków, Poland) Ronald C. Mullin (Kitchener, ON, Canada) Che Tat Ng (Waterloo, ON, Canada) Cheryl E. Praeger (Nedlands, WA, Australia) Jürg Rätz (Bern, Switzerland) Boris M. Schein (Fayetteville, AR, USA) Klaus Schmidt (Vienna, Austria) Jaroslav Smítal (Opava, Czech Republic) Vera T. Sós (Budapest, Hungary) Henrik Stetkaer (Aarhus, Denmark)
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