From Wikipedia, the free encyclopedia

In modal logic, modal collapse is the condition in which every true statement is necessarily true, and vice versa; that is to say, there are no contingent truths, or to put it another way, that "everything exists necessarily". [1] [2] In the notation of modal logic, this can be written as .

In the context of philosophy, the term is commonly used in critiques of ontological arguments for the existence of God and the principle of divine simplicity. [1] [3] For example, Gödel's ontological proof contains as a theorem, which combined with the axioms of system S5 leads to modal collapse. [4] Since some regard divine freedom as essential to the nature of God, and modal collapse as negating the concept of free will, this then leads to the breakdown of Gödel's argument. [5]

References

  1. ^ a b Tomaszewski, Christopher (2019). "Collapsing the modal collapse argument: On an invalid argument against divine simplicity". Analysis. 79 (2): 275–284. doi: 10.1093/analys/any052. ISSN  0003-2638.
  2. ^ Schmid, Joseph C. (2022). "The fruitful death of modal collapse arguments" (PDF). International Journal for Philosophy of Religion. 91 (1): 3–22. doi: 10.1007/s11153-021-09804-z. ISSN  0020-7047. S2CID  236427989.
  3. ^ Benzmüller, Christoph; Paleo, B. W. (2016). "The Ontological Modal Collapse as a Collapse of the Square of Opposition". The Square of Opposition: A Cornerstone of Thought. Studies in Universal Logic. pp. 307–313. doi: 10.1007/978-3-319-45062-9_18. ISBN  978-3-319-45061-2. S2CID  42006078.
  4. ^ Kovač, Srećko (2012), Szatkowski, Miroslaw (ed.), "15. Modal Collapse in Gödel's Ontological Proof" (PDF), Ontological Proofs Today, de Gruyter, pp. 323–344, doi: 10.1515/9783110325881.323, ISBN  978-3-11-032515-7, retrieved 2022-04-28
  5. ^ Pedersen, Daniel J.; Lilley, Christopher (2022). "Divine Simplicity, God's Freedom, and the Supposed Problem of Modal Collapse". Journal of Reformed Theology. 16 (1–2): 127–147. doi: 10.1163/15697312-bja10028. hdl: 2164/18891. ISSN  1569-7312. S2CID  248106829.
From Wikipedia, the free encyclopedia

In modal logic, modal collapse is the condition in which every true statement is necessarily true, and vice versa; that is to say, there are no contingent truths, or to put it another way, that "everything exists necessarily". [1] [2] In the notation of modal logic, this can be written as .

In the context of philosophy, the term is commonly used in critiques of ontological arguments for the existence of God and the principle of divine simplicity. [1] [3] For example, Gödel's ontological proof contains as a theorem, which combined with the axioms of system S5 leads to modal collapse. [4] Since some regard divine freedom as essential to the nature of God, and modal collapse as negating the concept of free will, this then leads to the breakdown of Gödel's argument. [5]

References

  1. ^ a b Tomaszewski, Christopher (2019). "Collapsing the modal collapse argument: On an invalid argument against divine simplicity". Analysis. 79 (2): 275–284. doi: 10.1093/analys/any052. ISSN  0003-2638.
  2. ^ Schmid, Joseph C. (2022). "The fruitful death of modal collapse arguments" (PDF). International Journal for Philosophy of Religion. 91 (1): 3–22. doi: 10.1007/s11153-021-09804-z. ISSN  0020-7047. S2CID  236427989.
  3. ^ Benzmüller, Christoph; Paleo, B. W. (2016). "The Ontological Modal Collapse as a Collapse of the Square of Opposition". The Square of Opposition: A Cornerstone of Thought. Studies in Universal Logic. pp. 307–313. doi: 10.1007/978-3-319-45062-9_18. ISBN  978-3-319-45061-2. S2CID  42006078.
  4. ^ Kovač, Srećko (2012), Szatkowski, Miroslaw (ed.), "15. Modal Collapse in Gödel's Ontological Proof" (PDF), Ontological Proofs Today, de Gruyter, pp. 323–344, doi: 10.1515/9783110325881.323, ISBN  978-3-11-032515-7, retrieved 2022-04-28
  5. ^ Pedersen, Daniel J.; Lilley, Christopher (2022). "Divine Simplicity, God's Freedom, and the Supposed Problem of Modal Collapse". Journal of Reformed Theology. 16 (1–2): 127–147. doi: 10.1163/15697312-bja10028. hdl: 2164/18891. ISSN  1569-7312. S2CID  248106829.

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