Abstract
Sections 1, 2 and 3 contain the main result, the strong finite axiomatizability of all 2-valued matrices. Since non-strongly finitely axiomatizable 3-element matrices are easily constructed the result reveals once again the gap between 2-valued and multiple-valued logic. Sec. 2 deals with the basic cases which include the important F ∞i from Post's classification. The procedure in Sec. 3 reduces the general problem to these cases. Sec. 4 is a study of basic algebraic properties of 2-element algebras. In particular, we show that equational completeness is equivalent to the Stone-property and that each 2-element algebra generates a minimal quasivariety. The results of Sec. 4 will be applied in Sec. 5 to maximality questions and to a matrix free characterization of 2-valued consequences in the lattice of structural consequences in any language. Sec. 6 takes a look at related axiomatization. problems for finite algebras and matrices. We study the notion of a propositional consequence with equality and, among other things, present explicit axiomatizations of 2-valued consequences with equality.
Similar content being viewed by others
References
G. Asser and W. Rautenberg, Ein Verfahren zur Axiomatisierung gewisser zweiwertiger Aussagenkalküle, Zeitschrift für Mathematische Logik und Grundlagen der Mathematik 6 (1960), pp. 303–318.
K. A. Baker, Congruence-distributive polynomial reducts of lattices, Algebra Universalis 9 (1979), pp. 142–145.
J. Berman, A proof of Lyndon's finite base theorem, Discrete Mathematics 29 (1980), pp. 229–233.
D. M. Clark and P. H. Krauss, Varieties generated by para-primal algebras, Algebra Universalis 7 (1977), pp. 93–114.
-, Plain para-primal algebras, to appear in: Algebra Universalis.
G. Kreisel and J.-L. Krivine, Modelltheorie, Berlin 1972.
G. Grätzer, Universal algebra, 2. edition, Berlin 1979.
L. Henkin, Fragments of the propositional calculus, The Journal of Symbolic Logic 14 (1949), pp. 42–48.
B. Jónsson, Algebras whose congruence lattice are distributive, Mathematica Scandinavica 21 (1967), pp. 110–121.
J. Łoś and R. Suszko, Remarks on sentential logics, Indagationes Mathematicae 20 (1958), pp. 177–183.
R. C. Lyndon, Identities in 2-valued calculi, Transaction of the American Mathematical Society 71 (1951), pp. 457–465.
A. I. Malcev, Algebraic systems, Berlin 1973.
R. McKenzie, A finite algebra A with SP {A} not elementary, Algebra Universalis 8 (1978), pp. 5–7.
A. J. Olshewski, Conditional identities in finite groups, Siberian Mathematical Journal1975, pp. 1000–1003.
A. E. Pixley, Functionally complete algebras generating distributive and permutable classes, Mathematische Zeitschrift 114 (1970), pp. 361–372.
E. Post, Two-valued iterative systems of Mathematical Logic, Princeton 1941. Reprint New-York 1960.
R. W. Quackenbush, Algebras with minimal spectrum, Algebra Universalis 10 (1980), pp. 117–129.
W. Rautenberg, Klassische und Nichtklassische Ausagenlogik, Vieweg, Wiesbaden 1979.
I. G. Rosenberg, Completeness properties of multiple-valued logic algebras, Computer Science and Multiple-valued logic (ed. D. C. Rine), North-Holland, Amsterdam 1977.
A. Selman, Completeness of calculi for axiomatically defined classes of algebras, Algebra Universalis 2 (1972), pp. 20–32.
S. Surma (editor), Studies in the history of mathematical logic, Ossolineum, Wrocław 1973.
W. Taylor, The fine spectrum of a variety, Algebra Universalis 5 (1975), pp. 263–303.
R. Wójcicki, Matrix approach in methodology of sentential calculi, Studia Logica 32 (1973), pp. 7–37.
P. Wojtylak, Matrix representation for structural strengthenings of a propositional logic, Studia Logica 38 (1979), pp. 263–266.
—, Strongly finite logics, Bulletin of the Section of Logic 8 (1979), pp. 99–111.
A. Wroński, A 3-valued matrix whose consequence is not finitely based, Bulletin of the Section of Logic 8 (1979), pp. 68–71.
-, Consequence operations of 2-element matrices (Manuscript in Polish).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rautenberg, W. 2-Element matrices. Stud Logica 40, 315–353 (1981). https://doi.org/10.1007/BF00401653
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00401653