Ralph Freese
Ralph Freese
Department of Mathematics
University of Hawaii
Honolulu, HI 96822
Telephone: 808-956-9367
Fax: 808-956-9139
E-mail: email me
Office: Keller Hall 305
Classes
Previous Classes
Software
- Universal Algebra Calculator:
This is a mirror site for
Emil Kiss's algebra calculator. The calculator now uses my lattice
drawing program to display congruence lattices.
- Lattice Drawing Program:
I have a java component for drawing lattices and ordered sets. There
are some demos and sample applictions.
General Algebra and Lattice Theory Homepages
Publications
Conferences Talks:
- My talk on Projective
Lattices, with applications to isotone maps and databases,
at CLA 2013, La Rochelle, France Oct 15-18, 2013.
- My talk on the use
and implementation of the Universal Algebra Calculator,
at the first Conference/Workshop on Computational
Universal Algebra, University of Louisville, Oct 4, 2013.
- My talk on Maltsev products
of congruence permutable varieties,
at the Louisville AMS Meeting, Oct 5-6, 2013.
- My talk on Maltsev Conditions,
at the Lattice Theory and Universal Algebra Meeting
honoring Bela Csakany, Szeged, June 21-26, 2012.
- My talk on semidistributivity
and n-permutability,
at the Honolulu AMS Meeting, Mar 3-4, 2012.
- My talk on Algorithm and
the Universal Algebra Calculator,
at the
JardaFest Meeting, Jun 21-25, 2010.
- My talk on Maltsev Conditions
(joint with Matt Valeriote)
at the Nashville Conference June 11-16, 2007.
- My talk on Congruence Varieties
at the Gratzer Schmidt 70th Birthday Party,
Budapest, June 6-9, 2006.
Teaching and Pedagogy
Photos