Skip to content
Carmelics
TopicsThinkersChangesContributorsLoading account…

    Carmelics

    A reasoning platform. Break down any belief into clear reasons, explore both sides, and weigh the evidence honestly.

    Navigate

    • Topics
    • Search
    • Recent Changes
    • Contribute
    • How It Works
    • Glossary
    • Thinkers
    • Contributors
    • About
    • Statistics
    • Terms
    • Privacy

    Database

    Statements
    —
    Perspectives
    —
    Topics
    —

    Press ? for keyboard shortcuts

    LoyalLoyalJusticeJustice
    Made withinDC&Austin
    Statements
    321,452
    Perspectives
    108,905
    Topics
    42
    If necessitism is correct, the invalidity of BF in KQML's... — Carmelics
    Home
    HistoryEditSee Inverse

    Part of a larger discussion

    Challenges→BF (Barcan Formula) is unprovable in KQML

    If necessitism is correct, the invalidity of BF in KQML's semantics indicates a defect in that semantics' metaphysical adequacy, not a proof of BF's unprovability in all legitimate modal logics.

    ?Rate how convincing each reason is below to see the overall strength.

    No one has weighed in yet. Be the first to share reasons for or against this statement.

    Sign in or register to share your perspective on this statement.

    Key Terms

    BF(Quantified modal logic)
    The Barcan Formula, a controversial principle provable in SQML but invalid in KQML
    KQML semantics(as the interpretive framework being evaluated)
    A specific set of rules that define how to interpret logical formulas and determine what's true or false in a particular modal logic system (KQML is a technical name for one such system).
    Metaphysical adequacy(as a standard for judging a logic system)
    Whether a logical system accurately describes how reality actually works, not just whether it follows its own internal rules correctly.
    Modal logic(logic)
    A system of logic that deals with concepts like possibility, necessity, and what could or must be true.
    Unprovability(describing mathematical claims that cannot be established as true)

    Next step

    Based on where you are in your exploration

    Explore a random proposition
    Start fresh with something unrelated.
    The quality of a statement that cannot be logically proven true using the accepted rules and facts of a system, like a math problem that has no solution.
    Validity (in logic)(what the tests are trying to determine about logical formulas)
    Whether a logical statement or argument follows the rules correctly and must be true if its assumptions are true.
    necessitism(Philosophy of modality; a logical truth of SQML)
    The view that everything that exists exists necessarily — both possibilia and actually existing things alike are necessary beings, such that there are no worlds from which they are altogether absent.

    Connections

    2 topics

    Truth & Knowledge1 linkedModality & Possibility1 linked

    Related

    BF (Barcan Formula) is unprovable in KQML

    Details

    Type
    claim
    Perspectives
    0 (0 for, 0 against)
    Edits
    1 edit

    Open for perspectives

    This idea is waiting for its first supporting or challenging perspective.

    Share the first perspective