•  342
    Reflecting on Absolute Infinity
    Journal of Philosophy 113 (2): 89-111. 2016.
    This article is concerned with reflection principles in the context of Cantor’s conception of the set-theoretic universe. We argue that within such a conception reflection principles can be formulated that confer intrinsic plausibility to strong axioms of infinity.
  •  156
    In defense of epistemic arithmetic
    Synthese 116 (1): 1-25. 1998.
    This paper presents a defense of Epistemic Arithmetic as used for a formalization of intuitionistic arithmetic and of certain informal mathematical principles. First, objections by Allen Hazen and Craig Smorynski against Epistemic Arithmetic are discussed and found wanting. Second, positive support is given for the research program by showing that Epistemic Arithmetic can give interesting formulations of Church's Thesis.
  •  52
    Terugkeer van het subject? Verslag van de 23e Vlaams-Nederlandse filosofiedag, Kortrijk, 27 oktober 2001
    Algemeen Nederlands Tijdschrift voor Wijsbegeerte 94 (2): 155-158. 2002.
  •  64
    Formalizing Church’s Thesis
    In Adam Olszewski, Jan Wolenski & Robert Janusz (eds.), Church's Thesis After 70 Years, De Gruyter. pp. 253-268. 2006.
  •  228
    Truth is Simple
    Mind 126 (501): 195-232. 2017.
    Even though disquotationalism is not correct as it is usually formulated, a deep insight lies behind it. Specifically, it can be argued that, modulo implicit commitment to reflection principles, all there is to the notion of truth is given by a simple, natural collection of truth-biconditionals.
  •  58
    Book Review: Stewart Shapiro. Vagueness in Context (review)
    Notre Dame Journal of Formal Logic 50 (2): 221-226. 2009.
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    Philosophy of mathematics
    Stanford Encyclopedia of Philosophy. 2008.
    If mathematics is regarded as a science, then the philosophy of mathematics can be regarded as a branch of the philosophy of science, next to disciplines such as the philosophy of physics and the philosophy of biology. However, because of its subject matter, the philosophy of mathematics occupies a special place in the philosophy of science. Whereas the natural sciences investigate entities that are located in space and time, it is not at all obvious that this is also the case with respect to th…Read more