Algebra-valued models for LP-set theory

Abstract

In this paper, we explore the possibility of constructing algebra-valued models of set theory based on Priest's Logic of Paradox.  We show that we can build a non-classical model of ZFC which has as internal logic Priest's Logic of Paradox and validates Leibniz's law of indiscernibility of identicals. This is achieved by modifying the interpretation map for \in and == in our algebra-valued model. We end by comparing our model constructions to Priest's model-theoretic strategy and point out that we have a tradeoff between desirable model-theoretic properties and the validity of ZFC and its theorems

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