Relational semantics for the 4-valued relevant logics BN4 and E4

Logic and Logical Philosophy 25 (2):173-201 (2016)
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Abstract

The logic BN4 was defined by R.T. Brady in 1982. It can be considered as the 4-valued logic of the relevant conditional. E4 is a variant of BN4 that can be considered as the 4-valued logic of entailment. The aim of this paper is to define reduced general Routley-Meyer semantics for BN4 and E4. It is proved that BN4 and E4 are strongly sound and complete w.r.t. their respective semantics.

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References found in this work

How a computer should think.Nuel Belnap - 1977 - In Gilbert Ryle (ed.), Contemporary aspects of philosophy. Boston: Oriel Press.
Partiality and its dual.J. Michael Dunn - 2000 - Studia Logica 66 (1):5-40.
Modal logics with Belnapian truth values.Serge P. Odintsov & Heinrich Wansing - 2010 - Journal of Applied Non-Classical Logics 20 (3):279-304.
A useful four-valued logic.N. D. Belnap - 1977 - In J. M. Dunn & G. Epstein (eds.), Modern Uses of Multiple-Valued Logic. D. Reidel.
Entailment and relevance.Nuel D. Belnap - 1960 - Journal of Symbolic Logic 25 (2):144-146.

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