The theory of discriminator algebras and varieties has been investigated extensively, and provides us with a wealth of information and techniques applicable to specific examples of such algebras and varieties. Here we give several such examples for Boolean algebras with a residuated binary operator, abbreviated as r-algebras. More specifically, we show that all finite r-algebras, all integral r-algebras, all unital r-algebras with finitely many elements below the unit, and all commutative residuated monoids are discriminator algebras, provided they are subdirectly irreducible. These results are then used to give equational bases for some varieties of r-algebras. We also show that the variety of all residuated Boolean monoids is not a discriminator variety, which answers a question of B. Jónsson.
@article{bwmeta1.element.bwnjournal-article-bcpv28z1p239bwm, author = {Jipsen, Peter}, title = {Discriminator varieties of Boolean algebras with residuated operators}, journal = {Banach Center Publications}, volume = {28}, year = {1993}, pages = {239-252}, zbl = {0794.06012}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-bcpv28z1p239bwm} }
Jipsen, Peter. Discriminator varieties of Boolean algebras with residuated operators. Banach Center Publications, Tome 28 (1993) pp. 239-252. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-bcpv28z1p239bwm/
[000] [BP89] W. J. Blok and D. Pigozzi, On the structure of varieties with equationally definable principal congruences III, preprint, 1989.
[001] [GM90] S. Ghilardi and G. C. Meloni, Modal logics with n-ary connectives, Z. Math. Logik Grundlag. Math. 36 (1990), 193-215. | Zbl 0729.03008
[002] [J91] B. Jónsson, The preservation theorem for canonical extensions of Boolean algebras with operators, in: Proc. Birkhoff Sympos., to appear.
[003] [J91a] B. Jónsson, Boolean algebras with operators, in: Proc. 1991 Summer Session 'Algebras and order' at the Université de Montréal, Kluwer, to appear.
[004] [JT51] B. Jónsson and A. Tarski, Boolean algebras with operators, Part I, Amer. J. Math. 73 (1951), 891-939. | Zbl 0045.31505
[005] [JTs91] B. Jónsson and C. Tsinakis, Relation algebras as residuated Boolean algebras, Algebra Universalis, to appear.
[006] [Ma78] R. Maddux, Topics in relation algebras, doctoral dissertation, Univ. of California, Berkeley 1975.
[007] [Ma82] R. Maddux, Some varieties containing relation algebras, Trans. Amer. Math. Soc. 272 (2) (1982), 501-526. | Zbl 0515.03039
[008] [M75] R. McKenzie, On spectra, and the negative solution of the decision problem for identities having a finite nontrivial model, J. Symbolic Logic 40 (2) (1975), 186-196. | Zbl 0316.02052
[009] [MMT] R. N. McKenzie, G. F. McNulty and W. F. Taylor, Algebras, Lattices, Varieties, Volume I, The Wadsworth & Brooks/Cole Mathematics Series, Wadsworth, Belmont, California, 1987.
[010] [P61] W. Prenowitz, A contemporary approach to classical geometry, Amer. Math. Monthly 68 (No. 1, Part II) (1961). | Zbl 0094.15402
[011] [W78] H. Werner, Discriminator algebras, Stud. Algebra Anwendungen 6, Akademie-Verlag, Berlin 1978.