Semigroup Forum is a platform for speedy and efficient transmission of information on current research in semigroup theory.
Scope: Algebraic semigroups, topological semigroups, partially ordered semigroups, semigroups of measures and harmonic analysis on semigroups, numerical semigroups, transformation semigroups, semigroups of operators, and applications of semigroup theory to other disciplines such as ring theory, category theory, automata, logic, etc.
Languages: English (preferred), French, German, Russian.
Survey Articles: Expository, such as a symposium lecture. Of any length. May include original work, but should present the nonspecialist with a reasonably elementary and self-contained account of the fundamental parts of the subject.
Research Articles: Will be subject to the usual refereeing procedure.
Research Announcements: Description, limited to eight pages, of new results, mostly without proofs, of full length papers appearing elsewhere. The announcement must be accompanied by a copy of the unabridged version.
Short Notes: (Maximum 4 pages) Worthy of the readers' attention, such as new proofs, significant generalizations of known facts, comments on unsolved problems, historical remarks, etc.
Research Problems: Unsolved research problems.
Announcements: Of conferences, seminars, and symposia on Semigroup Theory.
Abstracts and Bibliographical Items: Abstracts in English, limited to one page, of completed work are solicited.
Listings of books, papers, and lecture notes previously published elsewhere and, above all, of new papers for which preprints are available are solicited from all authors.
Abstracts for Reviewing Journals: Authors are invited to provide with their manuscript informally a one-page abstract of their contribution with key words and phrases and with subject matter classification. This material will be forwarded to Zentralblatt für Mathematik.
Offprints: Fifty offprints without covers will be supplied without charge to the first author of each article. Additional offprints may be ordered with prepayment only on forms obtainable from the Managing Editors. No offprints are supplied for Short Notes, Announcements, Abstracts, or Bibliographical Items.

HONORARY EDITORS
Karl H. Hofmann 
Fachbereich Mathematik 
Technische Hochschule 
Schlossgartenstr. 7 
D-64289 Darmstadt, Germany
hofmann@mathematik.tu-darmstadt.de
COMMUNICATING EDITORS
Jorge AlmeidaB
Departamento de Matematica Pura
Faculdade de Cijncias
Universidade do Porto
Rua do Campo Alegre, 687
4169-007 Porto, Portugal
jalmeida@fc.up.pt
Jerome A. GoldsteinC
Department of Mathematical Sciences
Winfield Dunn Building
Room 373
University of Memphis
Memphis, TN 38152 USA
goldstej@msci.memphis.edu
Victoria GouldC 
Department of Mathematics 
University of York 
Heslington 
York YO10 5DD, UK
Victoria.Gould@york.ac.uk
Markus Haase
Kiel University 
Mathematisches Seminar
Ludewig-Meyn-Str. 4, 24118 Kiel
Germany
haase@math.uni-kiel.de
Marcel Jackson
Department of Mathematics and Statistics
La Trobe University
Melbourne VIC 3086
Australia
m.g.jackson@latrobe.edu.au
Anthony To-Ming Lau
Department of Mathematical and Statistical Sciences
University of Alberta
Edmonton, AB T6G 2G1
Canada
tlau@math.ualberta.ca
Jimmie D. LawsonCH
Department of Mathematics
Louisiana State University
Baton Rouge, LA 70803 USA
lawson@math.lsu.edu
Mark V. Lawson
Department of Mathematics
The Maxwell Institute for Mathematical Sciences
Heriot-Watt University
Riccarton, Edinburgh EH14 4AS
United Kingdom
markl@ma.hw.ac.uk
Edmond W. H. LeeJS
Department of Mathematics
Nova Southeastern University
Fort Lauderdale, FL 33314, USA
edmond.lee@nova.edu
Markus Lohrey
Department of Electrical Engineering and Computer Science
University of Siegen
Hölderlinstrasse 3
57076 Siegen
Germany
lohrey@eti.uni-siegen.de
László MárkiC,TS
Mathematical Institute
Hungarian Academy of Sciences
H-1364 Budapest, Pf. 127
Hungary
marki.laszlo@renyi.mta.hu
Michael W. Mislove
Department of Mathematics
Tulane University
New Orleans, LA 70118 USA
mwm@math.tulane.edu
Jan Okniński
University of Warsaw
Banacha 2
02-791 Warsaw, Poland
okninski@mimuw.edu.pl
Dominique Perrin
Université de Marne-la-Vallée
77454 Marne-la-Vallée
Cedex 2, France
perrin@univ-mlv.fr
Norman R. Reilly
Department of Mathematics
Simon Fraser University
Burnaby, British Columbia
Canada V5A 1S6
nreilly@sfu.ca
Abdelaziz Rhandi
Dipartimento di Matematica
Università degli Studi di Salerno
Via Ponte Don Melillo 84084 Fisciano (SA), Italy
arhandi@unisa.it
Boris M. Schein
Department of Mathematical Sciences
University of Arkansas
Fayetteville, AR 72701 USA
bschein@uark.edu
Lev N. Shevrin
Institute of Natural Sciences
Ural Federal University
Lenina 51
620000 Ekaterinburg
Russia
lev.shevrin@urfu.ru
Benjamin Steinberg
Department of Mathematics
City College of New York
NAC 8/133
Convent Ave at 138th Street
New York, NY 10031
bsteinbg@gmail.com
Fernando Torres
IMECC/UNICAMP
R. Sergio Buarque de Holanda, 651
Cidade Universitaria
13083-859 Campinas, SP
Brazil
ftorres@ime.unicamp.br
Mikhail VolkovME
Institute of Natural Sciences
Ural Federal University
Lenina 51
620000 Ekaterinburg
Russia
m.v.volkov@urfu.ru
Pascal Weil
LaBRI, CNRS
Université de Bordeaux
351 cours de la Libération
33400 Talence
France
pascal.weil@cnrs.fr
B Book Review Editor
C Council Member
CH Chair of Council
JS Journal Secretary
ME Managing Editor
TS Tributes Editor