Nonclassical Logic of Vagueness

Paula Teijeiro


In this paper, we present a simple overview of the main non classical logics proposed for dealing with the Sorites paradox, that is, weakly paracomplete logics, weakly paraconsistent, and type 1 fuzzy logics. We note some of their advantages and problems and we suggest that the problems can be at least partially overcome by adopting a solution which relies on interval based type 2 fuzzy logics.


Sorites; vagueness; fuzzy logic; supervaluationism; subvaluationism


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