Abstract
We consider the restricted interpolation property IPR in modal logics. Earlier, the decidability of IPR over the modal logic S4 was proved and a finite list was found that contains all logics that can possess IPR over S4. However, this list contains some undue logics. The present article gives examples of the logics.
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The work was carried out in the framework of FWNF–2022–0011.
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Translated from Sibirskii Matematicheskii Zhurnal, 2022, Vol. 63, No. 2, pp. 344–359. https://doi.org/10.33048/smzh.2022.63.207
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Maksimova, L.L., Yun, V.F. Algorithms for Recognizing Restricted Interpolation over the Modal Logic S4. Sib Math J 63, 286–298 (2022). https://doi.org/10.1134/S0037446622020070
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DOI: https://doi.org/10.1134/S0037446622020070
Keywords
- modal logic
- interpolation
- decidability
- recognizability
- nonclassical logics
- amalgamation
- characteristic formulas