Abstract
By using algebraic-categorical tools, we establish four criteria in order to disprove canonicity, strong completeness, w-canonicity and strong w-completeness, respectively, of an intermediate propositional logic. We then apply the second criterion in order to get the following result: all the logics defined by extra-intuitionistic one-variable schemata, except four of them, are not strongly complete. We also apply the fourth criterion in order to prove that the Gabbay-de Jongh logic D1 is not strongly w-complete.
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References
Chagrov, A., and M. Zakharyaschev, Modal Logic, Clarendon Press, Oxford 1997.
Ferrari, M., and P. Miglioli, ‘A method to single out maximal propositional logics with the disjunction property I’, Annals of Pure and Applied Logic 76 (1995), 1–46.
Ferrari, M., and P. Miglioli, ‘A method to single out maximal propositional logics with the disjunction property II’, Annals of Pure and Applied Logic 76 (1995), 117–168.
Fine, K., ‘Normal forms in modal logic’, Notre Dame Journal of Formal Logic 16 (1975), 31–42.
Gabbay, D. M., and D. de Jongh, ‘A Sequence of decidable finitely axiomatizable intermediate logics with the disjunction property’, Journal of Symbolic Logic 39 (1974), 67–78.
Ghilardi, S., ‘Free Heyting algebras as bi-Heyting algebras’, Math. Rep. Acad. Sci. of Canada XVI (1992), 6, 240–244.
Ghilardi, S., and G. Meloni, ‘Constructive canonicity in non classical logics’, Annals of Pure and Applied Logic 86 (1997), 1–32.
Goldblatt, R. I., ‘The McKinsey axiom is not canonical’, Journal of Symbolic Logic 56 (1991), 554–562.
Miglioli, P., ‘An infinite class of maximal intermediate propositional logics with the disjunction property’, Archive for Mathematical Logic 31 (1991), 6, 415–432.
Mc Lane, S., Categories for the Working Mathematician, Springer, Berlin 1971.
Shimura, T., ‘On completeness of intermediate predicate logics with respect to Kripke semantics’, Bulletin of the Section of Logic 24 (1995), 41–45.
Wang, X., ‘The McKinsey axiom is not compact’, Journal of Symbolic Logic 57 (1992), 1230–1238.
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Ghilardi, S., Miglioli, P. On Canonicity and Strong Completeness Conditions in Intermediate Propositional Logics. Studia Logica 63, 353–385 (1999). https://doi.org/10.1023/A:1005203020752
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DOI: https://doi.org/10.1023/A:1005203020752