Authors: Colin James III
JYB4, a logic system named after its writer Jean-Yves Béziau, is less a logic system and more of a model checking system based on 13 axioms for which p and q are assigned ±1 to evaluate models by arithmetic. AR4, described by its writer Fabian Schang as a doxistic "deviant" logic system, is a follow-on of six more axioms. Of the 19 axioms, 8 or 42% are not tautologous. We conclude that those statistics remove JYB4 and AR4 from further serious consideration as viable modern modal four-valued logics.
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[v1] 2018-06-08 15:43:03
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