“Four-valued” semantics for the relevant logic R

Journal of Philosophical Logic 33 (3):327-341 (2004)
This paper sets out two semantics for the relevant logic R based on Dunn's four-valued semantics for first-degree entailments. Unlike Routley's semantics for weak relevant logics, they do not use two ternary accessibility relations. Unlike Restall's semantics, they capture all of R. But there is a catch. Both of the present semantics are neighbourhood semantics, that is, they include sets of propositions in the specification of their frames.
Keywords Philosophy
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DOI 10.1023/B:LOGI.0000031375.18295.30
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References found in this work BETA
Edwin D. Mares (1995). A Star-Free Semantics for R. Journal of Symbolic Logic 60 (2):579 - 590.

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Citations of this work BETA
Eunsuk Yang (2013). R and Relevance Principle Revisited. Journal of Philosophical Logic 42 (5):767-782.

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