Department of Mathematical Sciences
Queen's University, Belfast,
Collaborating Member: Cenrto
de Álgebra da Universidade de Lisboa, Lisboa, Portugal
Research area: Algebraic
Semigroup for Windows
This program calculates and
analyses finite transformation semigroups. It is written in C++ and
runs under Windows 95/98/Me/2000/XP. You can download a zip file
containing the files needed to install the program by clicking on the
link below. Run the exe file to extract the setup files and then run
setup. The program will create a directory c: \sgp on your c drive
and will install the program and sample files to that directory. (You
can change the default directory during the installation process.)
(with Filipa Soares) Tiling
semigroups of n-dimensional hypercubic tilings,
Communications in Algebra 39 (2011),
(with Paulo J. Medeiros) Compatible
total orders on bisimple ω-semigrpoups,
Semigroup Forum 81 (2010), 200-216.
(with Filipa Soares) One-dimensional
tiling semigroups and factorial languages,
Communications in Algebra 37 (2009),
(with Ana Paula Garrao) Finite
subgroups of v-semilatticed inverse semigroups,
Semgroup Forum 78 (2009), 187-199.
ordered inverse semigroups, Proceedings
of International Conference on Semigroups, Lisbon, July 12-15,
2005, World Scientific (2007), 205-218.
Beamer Slides of Recent Talks
are the slides of a presentation at the Conference for Young
Mathematicians, University of Potsdam, Germany June 23-27, 2011.
are the slides of a seminar talk at the University of Minho,
Portugal, June 16, 2011.
are the slides of a presentationat the workshop in honor of the
80th birthday of Douglas Munn held at the University of Lisbon,
April 24, 2009.
are the slides of a presentation at the workshop on computational
aspects of semigroup theory at the University of St. Andrews,
September 5-9, 2006. Also included is an appendix on the
generation of congruences on inverse semigroup.
are notes of a series of lectures given at the Center of Algebra,
University of Lisbon, in May 1998. A hard copy of the notes is
available from the Center of Algebra.
to return to Don McAlister's faculty page.
Last modified 09/01/2011