Journal of Logic and Computation Advance Access published online on August 12, 2009
Journal of Logic and Computation, doi:10.1093/logcom/exp043
Original Papers |
A Topological Study of the Closed Fragment of GLP
Department of Philosophy, Stanford University, Stanford, California, USA.
E-mail: icard{at}stanford.edu
Received 2 February 2009.
In this article, we study the canonical model for the closed fragment of GLP and establish its precise relationship with a universal model constructed by Ignatiev. In particular, we effectively characterize the canonical model in terms of a coordinate system based on sequences of ordinals up to
0.We then define a simple topological model of this logic by defining a natural polytopology on the ordinal
0 itself.
References
- Abashidze M. Ordinal completeness of the Gödel-Löb modal system (Russian). In: Intensional Logics and the Logical Structure of Theories (1985) Metsniereba. 49–73.
- Beklemishev LD. Kripke semantics for provability logic GLP. (2007) November. University of Utrecht. In Logic Group Preprint Series 260. Available at http://preprints.phil.uu.nl/lgps/. To appear in Annals of Pure and Applied Logic.
- Beklemishev LD. Provability algebras and proof-theoretic ordinals, I. Annals of Pure and Applied Logic (2004) 128:103–123.[CrossRef][Web of Science]
- Beklemishev LD. Reflection principles and provability algebras in formal arithmetic (Russian). Uspehi Matematicheskih Nauk (2005) 60:3–78.
- Beklemishev LD. Veblen hierarchy in the context of provability algebras. In: Logic, Methodology and Philosophy of Science, Proceedings of the Twelfth International Congress—Hájek P, Valdés-Villanueva L, Westerstøahl D, eds. (2005) Kings College Publications. 65–78.
- Beklemishev LD, Bezhanishvili G, Icard T. On topological models of GLP. In: Logic Group Preprint Series (2009) July. University of Utrecht. Available at http://www.phil.uu.nl/preprints/lgps/.
- Beklemishev LD, Joosten JJ, Vervoort M. A finitary treatment of the closed fragment of Japaridze's provability logic. Journal of Logic and Computation (2005) 14:447–463.[Web of Science]
- Blackburn P, de Rijke M, Venema Y. Modal Logic (2001) Cambridge University Press.
- Blass A. Infinitary combinatorics and modal logic. Journal of Symbolic Logic (1990) 55:761–778.[CrossRef][Web of Science]
- Chagrov A, Zakharyaschev M. Modal Logic (1997) Oxford University Press.
- Esakia L. Diagonal constructions, Löb's formula and Cantor's scattered space (Russian). In: Studies in logic and semantics (1981) Metsniereba. 128–143.
- Icard T. Models of the Polymodal Provability Logic (2008) ILLC, Universiteit van Amsterdam: Master's Thesis.
- Ignatiev KN. On strong provability predicates and the associated modal logics. Journal of Symbolic Logic (1993) 58:249–290.[CrossRef][Web of Science]
- Ignatiev KN. The closed fragment of Japaridze's polymodal logic and the logic of
1-conservativity. In: ITLI Prepublication Series for Mathematical Logic and Foundations (1992). - Willard S. General Topology (1970) AddisonWesley Longman.
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