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  1. Tony Roy, More Natural Derivations for Priest, An Introduction to Non-Classical Logic, 2nd Ed.
    In [7] I produced natural derivation systems, including demonstration of soundness and completeness, for each of the logics described in the first edition of Priest, An Introduction to Non-Classical Logic [3]. The first edition of Priest’s book is Part I of the second edition. Eventually, I hope to complete the project, providing natural derivation systems for the quantified versions in Part II. In the meantime, without including parts for soundness and completeness, this document simply extends the previous paper to account (...)
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  2. Tony Roy, Making Sense of Relevant Semantics (Draft).
    Involving as it does impossible worlds and the like, the Routley-Meyer worlds semantics for relevant logic has seemed unmotivated to some. I set a version of relevant semantics in a context to make sense of its different elements. Suppose a view which makes room for structured properties — or related entities which combine in arbitrary ways to form structured ones. Then it may seem natural to say entailment supervenes upon the structures, so that P entails Q just when part of (...)
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  3. Tony Roy, Truth as Correspondence.
    In this short paper, I discuss certain aspects of a “common-sense” approach to truth and falsity. It is my experience that many will object to what I have to say. As you read, if you have objections, try to formulate them carefully, and ask yourself whether I attempt a reply.
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  4. Tony Roy, Validity and Soundness.
    In this short paper, I introduce two central notions for argument evaluation. The presentation is completely informal. It is possible to develop formal methods for working with validity and souneness, but it is also possible to apply the informal notions directly to problems in philosophy and beyond. In either case, it is important to understand the basic notions, in order to understand what is accomplished in reasoning. Exercises are included, with answers to selected exercises at the end.
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  5. Matthew Davidson & Tony Roy (forthcoming). Continuum Companion to Metaphysics. Continuum.
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  6. Matthew Davidson & Tony Roy (forthcoming). New Directions in Metaphysics. In Continuum Companion to Metaphysics. Continuum.
    In this paper we set out a Quinean approach to metaphysics. We evaluate Eli Hirsch's and Amie Thomasson's deflationary metaphysics and set out our metametaphysical framework.
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  7. Tony Roy & Matthew Davidson (2012). 1 1 New Directions In. In Robert Barnard Neil Manson (ed.), Continuum Companion to Metaphysics. 268.
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  8. Greg Restall & Tony Roy (2009). On Permutation in Simplified Semantics. Journal of Philosophical Logic 38 (3):333 - 341.
    This note explains an error in Restall’s ‘Simplified Semantics for Relevant Logics (and some of their rivals)’ (Restall, J Philos Logic 22(5):481–511, 1993 ) concerning the modelling conditions for the axioms of assertion A → (( A → B ) → B ) (there called c 6) and permutation ( A → ( B → C )) → ( B → ( A → C )) (there called c 7). We show that the modelling conditions for assertion and permutation proposed (...)
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  9. Tony Roy (2006). Natural Derivations for Priest, Introduction to Non-Classical Logic. Australasian Journal of Logic 4.
     
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  10. Tony Roy (2000). Things and de Re Modality. Noûs 34 (1):56–84.
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  11. Tony Roy (1995). In Defense of Linguistic Ersatzism. Philosophical Studies 80 (3):217 - 242.
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  12. Tony Roy (1993). Worlds and Modality. Philosophical Review 102 (3):335-361.
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