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    Actualist models satisfying N_Q can systematically differ... — Carmelics
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    Challenges→Q extended with the necessitist principle N_Q collapses into SQML

    Actualist models satisfying N_Q can systematically differ from SQML's Kripkean constant-domain semantics in how they interpret the inner domain, preserving a real distinction Linsky and Zalta have defended.

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    Key Terms

    Actualist models(in modal logic and metaphysics)
    A way of thinking about what's real that says only things that actually exist matter; contrasts with views that also count things that could exist but don't.
    Inner domain(in formal semantics)
    In logic, the set of things that count as 'really existing' in a particular model or scenario, as opposed to things that merely might exist.
    Kripkean constant-domain semantics(in modal logic)
    A method developed by philosopher Saul Kripke for understanding how logic works when we talk about what's possible and necessary; 'constant-domain' means we assume the same objects exist in all possible scenarios.
    Linsky and Zalta(in metaphysics and philosophy of logic)
    Bernard Linsky and Edward Zalta are contemporary philosophers who have written about what exists and how logic should handle abstract objects like fictional characters.

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    N_Q(Modal logic)
    A necessitist principle in the system Q, equivalent to the necessitist principle □N within Q
    SQML(Possibilist modal logic against which KQML is compared)
    Standard Quantified Modal Logic, which uses a single constant domain across all worlds, entailing ontological commitment to possibilia and validating BF, CBF, and BoxN

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    Modality & Possibility1 linked

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    Q extended with the necessitist principle N_Q collapses into SQML

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