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Hans Halvorson [15]Hans P. Halvorson [1]
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Hans Halvorson
Princeton University
  1.  89
    Quantifier Variance Without Collapse.Hans Halvorson - manuscript
    The thesis of quantifier variance is consistent and cannot be refuted via a collapse argument.
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  2. To Be a Realist About Quantum Theory.Hans Halvorson - 2019 - In Olimpia Lombardi (ed.), Quantum Worlds: Perspectives on the Ontology of Quantum Mechanics.
    I look at the distinction between between realist and antirealist views of the quantum state. I argue that this binary classification should be reconceived as a continuum of different views about which properties of the quantum state are representationally significant. What's more, the extreme cases -- all or none --- are simply absurd, and should be rejected by all parties. In other words, no sane person should advocate extreme realism or antirealism about the quantum state. And if we focus on (...)
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  3.  86
    Carnap's Formal Philosophy of Science.Hans P. Halvorson - forthcoming - In Christian Damböck & Georg Schiemer (eds.), Rudolf Carnap Handbuch. Metzler Verlag.
    A brief review of Carnap's formal program in philosophy of science.
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  4.  69
    The Philosophy of Science in Either-Or.Hans Halvorson - forthcoming - In Ryan Kemp & Walter Wietzke (eds.), Cambridge Critical Guide to Either-Or. Cambridge University Press.
    Kierkegaard's Either-Or is a book about the choice between aesthetic, ethical, and religious approaches to life. I show that Either-Or also contains a proposal for philosophy of science, and in particular, about the ideal epistemic state for human beings. Whereas the Cartesian-Hegelian tradition conceived of the ideal state as one of detached deliberation -- i.e. "seeing the world as it is in itself" -- Kierkegaard envisions the ideal state as the achievement of equilibrium between the "spectator" and "actor" aspects of (...)
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  5. Mutual translatability, equivalence, and the structure of theories.Thomas William Barrett & Hans Halvorson - 2022 - Synthese 200 (3):1-36.
    This paper presents a simple pair of first-order theories that are not definitionally (nor Morita) equivalent, yet are mutually conservatively translatable and mutually 'surjectively' translatable. We use these results to clarify the overall geography of standards of equivalence and to show that the structural commitments that theories make behave in a more subtle manner than has been recognized.
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  6.  85
    Objective Description in Physics.Hans Halvorson - forthcoming - In Tomas Marvan, Hanne Andersen, Benedikt Löwe & Hasok Chang (eds.), Proceedings of the 16th International Congress of Logic, Methodology and Philosophy of Science and Technology. College Publications.
    I argue against the claim -- advocated by Albert Einstein, Bernard Williams, and Ted Sider, among others -- that a description is objective only if it says how the world is in itself. Instead, I argue for the claim -- inspired by comments of Niels Bohr -- that a family of descriptions is objective only if they co-vary with their respective descriptive contexts. Moreover, I claim that "there is a shared objective reality" simply means that it is possible to satisfy (...)
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  7. Whence the Complex Numbers?Hans Halvorson - manuscript
    A short note on why we use complex numbers in physics.
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  8. Steven French: There Are No Such Things as Theories: Oxford University Press: Oxford 2020, 288 Pp., £55.00, ISBN: 9780198848158. [REVIEW]Hans Halvorson - 2021 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 52 (4):609-612.
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  9. Closing the Hole Argument.Hans Halvorson & John Byron Manchak - forthcoming - British Journal for the Philosophy of Science.
    The hole argument purportedly shows that spacetime substantivalism implies a pernicious form of indeterminism. We show that the argument is seductive only because it mistakes a trivial claim (viz. there are isomorphic models) for a significant claim (viz. there are hole isomorphisms). We prove that the latter claim is false -- thereby closing the debate about whether substantivalism implies indeterminism.
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  10.  10
    Niels Bohrs plads i den filosofiske tradition.Hans Halvorson - manuscript
    Brief discussion of Niels Bohr's place in the history of philosophy (including his philosophical forebears, Søren Kierkegaard, Rasmus Nielsen, and Harald Høffding).
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  11. Does Quantum Theory Kill Time?Hans Halvorson - manuscript
    We give a simple proof that there is no time in a quantum world.
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  12. Plantinga on Providence and Physics.Hans Halvorson - 2013 - European Journal for Philosophy of Religion 5 (3):19--30.
    Discussion of Alvin Plantinga's book, "Where the Conflict Really Lies".
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  13. John Bell on 'Subject and Object': An Exchange.Hans Halvorson & Jeremy Butterfield - forthcoming - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie.
    This three-part paper comprises: (i) a critique by Halvorson of Bell’s (1973) paper ‘Subject and Object’; (ii) a comment by Butterfield; (iii) a reply by Halvorson. An Appendix gives the passage from Bell that is the focus of Halvorson's critique.
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  14. There is No Invariant, Four-Dimensional Stuff.Hans Halvorson - manuscript
    Some philosophers say that in special relativity, four-dimensional stuff is invariant in some sense that three-dimensional stuff is not. I show that this claim is false.
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  15. Momentum and Context.Hans Halvorson - manuscript
    A sentence's meaning may depend on the state of motion of the speaker. I argue that this context-sensitivity blocks the inference from special relativity to four-dimensionalism.
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  16. Extension, Translation, and the Cantor-Bernstein Property.Thomas William Barrett & Hans Halvorson - manuscript
    The purpose of this paper is to examine in detail a particularly interesting pair of first-order theories. In addition to clarifying the overall geography of notions of equivalence between theories, this simple example yields two surprising conclusions about the relationships that theories might bear to one another. In brief, we see that theories lack both the Cantor-Bernstein and co-Cantor-Bernstein properties.
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