Discussiones Mathematicae General Algebra and Applications 24(2) (2004)
177-184
doi: 10.7151/dmgaa.1083
Ivan Chajda
Department of Algebra and Geometry
Palacký University of Olomouc
Tomkova 40; 779 00 Olomouc, Czech Republic
e-mail:chajda@inf.upol.cz
Keywords: groupoid, Boolean algebra, semi-bolean algebra, involution, dualautomorphism (or antiautomorphism).
2000 Mathematics Subject Classification: 20N02, 03G05 03G25, 06A11, 06F99, 08C10.
[1] | J.C. Abbott, Semi-boolean algebra, Mat. Vestnik 4 (1967), 177-198. |
[2] | G. Birkhoff, Lattice Theory, third edition, Publ. Amer. Math. Soc., Providence, RI, 1967. |
[3] | J. Dudek, Polynomials in idempotent commutative groupoids, Dissert. Math. 286 (1989), 1-59. |
Received 23 December 2003
Revised 29 December 2004