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1205Consistency and the theory of truthReview of Symbolic Logic 8 (3): 424-466. 2015.This paper attempts to address the question what logical strength theories of truth have by considering such questions as: If you take a theory T and add a theory of truth to it, how strong is the resulting theory, as compared to T? Once the question has been properly formulated, the answer turns out to be about as elegant as one could want: Adding a theory of truth to a finitely axiomatized theory T is more or less equivalent to a kind of abstract consistency statement. A large part of the inte…Read more
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275Syntactic reductionismPhilosophia Mathematica 8 (2): 124-149. 2000.Syntactic Reductionism, as understood here, is the view that the ‘logical forms’ of sentences in which reference to abstract objects appears to be made are misleading so that, on analysis, we can see that no expressions which even purport to refer to abstract objects are present in such sentences. After exploring the motivation for such a view, and arguing that no previous argument against it succeeds, sentences involving generalized quantifiers, such as ‘most’, are examined. It is then argued, …Read more
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1924Truth in FregeIn Michael Glanzberg (ed.), The Oxford Handbook of Truth, Oxford University Press. pp. 193-213. 2018.A general survey of Frege's views on truth, the paper explores the problems in response to which Frege's distinctive view that sentences refer to truth-values develops. It also discusses his view that truth-values are objects and the so-called regress argument for the indefinability of truth. Finally, we consider, very briefly, the question whether Frege was a deflationist.
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841Frege's PrincipleIn Jaakko Hintikka (ed.), From Dedekind to Gödel: Essays on the Development of the Foundations of Mathematics, Kluwer Academic Publishers. 1995.This paper explores the relationship between Hume's Prinicple and Basic Law V, investigating the question whether we really do need to suppose that, already in Die Grundlagen, Frege intended that HP should be justified by its derivation from Law V.
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615Communication and Knowledge: Rejoinder to Byrne and ThauMind 105 (417). 1996.A reply to Byrne and Thau's criticisms of "The Sense of Communiction".
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1449Ramified Frege ArithmeticJournal of Philosophical Logic 40 (6): 715-735. 2011.Øystein Linnebo has recently shown that the existence of successors cannot be proven in predicative Frege arithmetic, using Frege’s definitions of arithmetical notions. By contrast, it is shown here that the existence of successor can be proven in ramified predicative Frege arithmetic
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1139Intuition and the Substitution ArgumentAnalytic Philosophy 55 (1): 1-30. 2014.The 'substitution argument' purports to demonstrate the falsity of Russellian accounts of belief-ascription by observing that, e.g., these two sentences: (LC) Lois believes that Clark can fly. (LS) Lois believes that Superman can fly. could have different truth-values. But what is the basis for that claim? It seems widely to be supposed, especially by Russellians, that it is simply an 'intuition', one that could then be 'explained away'. And this supposition plays an especially important role…Read more
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1199This paper discusses the question whether it is possible to explain the notion of a singular term without invoking the notion of an object or other ontological notions. The framework here is that of Michael Dummett's discussion in Frege: Philosophy of Language. I offer an emended version of Dummett's conditions, accepting but modifying some suggestions made by Bob Hale, and defend the emended conditions against some objections due to Crispin Wright. This paper dates from about 1989. It originall…Read more
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