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The Journal of Philosophy

Volume 117, Issue 1, January 2020

Lucas Rosenblatt
Pages 30-54

Maximal Non-trivial Sets of Instances of Your Least Favorite Logical Principle

The paper generalizes Van McGee's well-known result that there are many maximal consistent sets of instances of Tarski's schema to a number of non-classical theories of truth. It is shown that if a non-classical theory rejects some classically valid principle in order to avoid the truth-theoretic paradoxes, then there will be many maximal non-trivial sets of instances of that principle that the non-classical theorist could in principle endorse. On the basis of this it is argued that the idea of classical recapture, which plays such an important role for non-classical logicians, can only be pushed so far.

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