Displaying the modal logic of consistency

Journal of Symbolic Logic 64 (4):1573-1590 (1999)
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Abstract

It is shown that the constructive four-valued logic N4 can be faithfully embedded into the modal logic S4. This embedding is used to obtain complete, cut-free display sequent calculi for N4 and C4, the modal logic of consistency over N4. C4 is a natural monotonic base system for semantics-based non-monotonic reasoning.

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Heinrich Wansing
Ruhr-Universität Bochum

References found in this work

Non-monotonic logic I.Drew McDermott & Jon Doyle - 1980 - Artificial Intelligence 13 (1-2):41-72.
Display logic.Nuel D. Belnap - 1982 - Journal of Philosophical Logic 11 (4):375-417.
A logic for default reasoning.Ray Reiter - 1980 - Artificial Intelligence 13 (1-2):81-137.
A useful four-valued logic.N. D. Belnap - 1977 - In J. M. Dunn & G. Epstein, Modern Uses of Multiple-Valued Logic. D. Reidel.

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