•  12
    In Part I of this paper, we identified and compared various schemes for trivalent truth conditions for indicative conditionals, most notably the proposals by de Finetti and Reichenbach on the one hand, and by Cooper and Cantwell on the other. Here we provide the proof theory for the resulting logics DF/TT and CC/TT, using tableau calculi and sequent calculi, and proving soundness and completeness results. Then we turn to the algebraic semantics, where both logics have substantive limitations: DF…Read more
  •  3
    Respects for Contradictions
    In Can Başkent & Thomas Macaulay Ferguson (eds.), Graham Priest on Dialetheism and Paraconsistency, Springer Verlag. pp. 39-57. 2019.
    I discuss the problem of whether true contradictions of the form “x is P and not P” might be the expression of an implicit relativization to distinct respects of application of one and the same predicate P. Priest rightly claims that one should not mistake true contradictions for an expression of lexical ambiguity. However, he primarily targets cases of homophony for which lexical meanings do not overlap. There exist more subtle forms of equivocation, such as the relation of privative opposition…Read more
  •  16
    Suszko’s problem: Mixed consequence and compositionality
    Review of Symbolic Logic 12 (4): 736-767. 2019.
    Suszko’s problem is the problem of finding the minimal number of truth values needed to semantically characterize a syntactic consequence relation. Suszko proved that every Tarskian consequence relation can be characterized using only two truth values. Malinowski showed that this number can equal three if some of Tarski’s structural constraints are relaxed. By so doing, Malinowski introduced a case of so-called mixed consequence, allowing the notion of a designated value to vary between the prem…Read more
  •  50
    Concept Utility
    Journal of Philosophy 116 (10): 525-554. 2019.
    Practices of concept-revision among scientists seem to indicate that concepts can be improved. In 2006, the International Astronomical Union revised the concept "Planet" so that it excluded Pluto, and insisting that the result was an improvement. But what could it mean for one concept or conceptual scheme to be better than another? Here we draw on the theory of epistemic utility to address this question. We show how the plausibility and informativeness of beliefs, two features that contribute to…Read more
  •  9
    Given a consequence relation in many-valued logic, what connectives can be defined? For instance, does there always exist a conditional operator internalizing the consequence relation, and which form should it take? In this paper, we pose this question in a multi-premise multi-conclusion setting for the class of so-called intersective mixed consequence relations, which extends the class of Tarskian relations. Using computer-aided methods, we answer extensively for 3-valued and 4-valued logics, f…Read more
  •  163
    Inexact Knowledge with Introspection
    Journal of Philosophical Logic 38 (2): 179-227. 2009.
    This paper supersedes an ealier version, entitled "A Non-Standard Semantics for Inexact Knowledge with Introspection", which appeared in the Proceedings of "Rationality and Knowledge". The definition of token semantics, in particular, has been modified, both for the single- and the multi-agent case.
  •  27
    Subjectivity in gradable adjectives: The case of tall and heavy
    with Steven Verheyen and Sabrina Dewil
    Mind and Language 33 (5): 460-479. 2018.
  •  41
    This is the handout of my comments on E. Zimmermann's paper "Monotonicity in Opaque Verbs", which I prepared for the workshop on Intensional Verbs and Non-Referential Terms held at IHPST on January 14, 2006.
  •  45
    Reliability, margin for error, and self-knowledge
    In Vincent Hendricks (ed.), New Waves in Epistemology, Palgrave-macmillan. pp. 215--250. 2006.
    Forthcoming in D.H. Pritchard & V. Hendricks, New Waves in Epistemology,.
  •  22
    Forthcoming in S. Artemov and R. Parikh, Proceedings of the ESSLLI 2006 Workshop on Rationality and Knowledge.
  •  28
    Version of March 05, 2007. An extended abstract of the paper appeared in the Proceedings of the 2006 Prague Colloquium on "Reasoning about Vagueness and Uncertainty".
  •  24
    Margins for error in context
    In G. Carpintero & M. Koelbel (eds.), Relative Truth, Oxford University Press. pp. 103--107. 2008.
  •  119
    Question-embedding and factivity
    Grazer Philosophische Studien 77 (1): 85-125. 2008.
    Attitude verbs fall in different categories depending on the kind of sentential complements which they can embed. In English, a verb like know takes both declarative and interrogative complements. By contrast, believe takes only declarative complements and wonder takes only interrogative complements. The present paper examines the hypothesis, originally put forward by Hintikka (1975), that the only verbs that can take both that -complements and whether -complements are the factive verbs. I argue…Read more
  •  14
    Review of Pascal Engel, Va Savoir! De la Connaissance En Général (review)
    Notre Dame Philosophical Reviews 2008 (2). 2008.
  •  5
    Soritical series and Fisher series
    In A. Hieke & H. Leitgeb (eds.), Reduction: Between the Mind and the Brain, Ontos Verlag. pp. 91-115. 2009.
  •  21
    Qualitative judgments, quantitative judgments, and norm-sensitivity
    Behavioral and Brain Sciences 33 (4): 335-336. 2010.