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All Normal Extensions of S5-squared Are Finitely Axiomatizable

โœ Scribed by Nick Bezhanishvili; Ian Hodkinson


Publisher
Springer Netherlands
Year
2004
Tongue
English
Weight
241 KB
Volume
78
Category
Article
ISSN
0039-3215

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๐Ÿ“œ SIMILAR VOLUMES


All Finitely Axiomatizable Normal Extens
โœ Michael Zakharyaschevm; Alexander Alekseev ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 546 KB

We use the apparatus of the canonical formulas introduced by Zakharyaschev [lo] to prove that all finitely axiomatizable normal modal logics containing K4.3 are decidable, though possibly not characterized by classes of finite frames. Our method is purely frame-theoretic. Roughly, given a normal log