فراهستی‌شناسی نوفرگه‌ای بر پایه فراهستی‌شناسی فرگه‌ای

نوع مقاله : پژوهشی اصیل

نویسندگان
گروه فلسفه و منطق، دانشکده علوم انسانی، دانشگاه تربیت مدرس، تهران، ایران
چکیده
فراهستی ­شناسی نوفرگه ­ای از بحث ­برانگیزترین فراهستی ­شناسی ­های دهه­ های اخیر است. یکی از رایج­ ترین تلقی ­ها از این فراهستی‌شناسی، لحاظ آن ذیل گونه ­های فراهستی­ شناسی‌های ساده­ نگر نظیر تنوع ­سورگرایی یا ماکسیمالیسم است. با این حال، اگر خود رویکرد فرگه و فراهستی­ شناسی قابل استنباط از این رویکرد را مدنظر قرار دهیم، نسبتی میان فراهستی­ شناسی فرگه ­ای و رویکردهای ساده­ نگر برقرار نخواهد شد. اگر فراهستی ­شناسی نوفرگه ­ای را در راستای فراهستی ­شناسی فرگه­ ای بخوانیم، خوانشی از این فراهستی­ شناسی خواهیم داشت که از مهم ­ترین ویژگی‌هایش

جدی ­نگرانه‌بودن است. نکته بنیادی این فراهستی ­شناسی آن است که در بستر هسته منطقی زبان طبیعی شکل می­گیرد و نه زبان طبیعی صرف. با این حال، اگرچه استفاده از فراهستی ­شناسی فرگه ­ای برای خوانش نوفرگه­ ای ­ها، خوانشی ناسازگار به‌دست نمی­ دهد، الزام ­هایی را به‌ویژه در واضح‌ساختن روش­ شناسی تحمیل می­کند. نیز با این خوانش، کارکرد روش فراهستی­ شناسی­های نوفرگه ­ای، کارکردی متافیزیکی در راستای تعیین مقوله شیء انتزاعی و نیز کارکردی معرفت­ شناسانه در جهت نحوه توجیه آنهاست و نه کارکردی هستی­ شناختی.

کلیدواژه‌ها


  1. [1] Beaney, Michael (1996). Frege : Making Sense, Duckworth
    [2] ---------- , "Introduction", in The Frege Reader, Edited. by Michael Beaney (1997), Basil Blackwell, pp.1-46
    [3] ---------- "Frege’s Use of Function-Argument Analysis and his Introduction of Truth-Values as Objects" in Essays on Frege’s Conception of Truth edited By Dirk Greimann (2007), Rodopi,pp.93-124
    [4] Bell, David (1979). Frege's Theory of Judgment, OUP
    [5] Berto, Francesco & Plebani, Matteo (2015). Ontology and Metaontology. A Contemporary Guide, Blumsbury
    [6] Burge, Tylor (2005). Truth , Tought , Reason. Essays on Frege, Clarendon
    [7] Carl, Wolfgang (1994). Frege's Theory of Sense & Reference, CUP
    [8] Carnap, Rudolf, "Empiricism, Semantics, and Ontology" in Revue Internationale de Philosophie Vol.4 No.11 (1950), pp.20-40
    [9] Currie, Gregory (1982). Frege: An Introduction to his Philosophy, Harvester
    [10] Dummett, Michael (1973). Frege. Philosophy of Language, Duckworth
    [11] ---------- (1991a). Frege and Other Philosophers, OUP
    [12] ---------- (1991b). Frege. Philosophy of Mathematics, Duckworth
    [13] Eklund, Mtti, "Neo-Fregean Ontology" in Philosophical Perspectives Vol. 20, Metaphysics (2006), Ridgeview Publishing Company, pp. 95-121
    [14] ---------- "Carnao and Ontological Pluralism" in Metametaphysics edited by David Chalmers, David Manley & Ryan Wasserman (2009), Clarendon Press, pp.130-157
    [15] Forth, Montgomery, "Editor's Introduction" (1964) in The Basic Laws of Arithmetic V.1 (1893), UCP, pp.v-lvii
    [16] Frege, Gottlob (1884). The Foundations of Arithmetic, translated by J.L.Austin (1950), Basil Blackwell
    [17] ---------- (1891). "Letter : Frege to Husserl", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.61-63
    [18] ---------- (1892). "On Concept and Object", in Translations from the Philosophical Writings of Gottlob Frege, translated by Peter Geach & Max Black (1960), Basil Blackwell, pp.42-55
    [19] ---------- (1892-5). "Comments on Sinn & Bedeutung", in The Frege Reader, Edited. by Michael Beaney (1997), Basil Blackwell, pp.172-180
    [20] ---------- (1893). The Basic Laws of Arithmetic V.1, translated by Montgomery Furth (1964), UCP
    [21] ---------- (1895). "Letter : Frege to Hilbert", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.32-34
    [22] ---------- (1896). "Letter : Frege to Peano", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.112-118
    [23] ---------- (1897a). "Logic", in Posthumous Writings, Edited by Hermes, Friedrich Kambertel & Friedrich Kaulbach (1979), Basil Blackwell, pp.126-151
    [24] ---------- (1897b). "On Mr. Peano's Conceptual Notation and My Own", in Collected Papers on Mathematics, Logic & Philosophy, Edited by Brian McGuinnes (1984), Basil Blackwell, pp.234-248
    [25] ---------- (1899a). "On Mr. H. Schubert's Numbers", in Collected Papers on Mathematics, Logic & Philosophy, Edited. by Brian McGuinnes (1984), Basil Blackwell, pp.249-272
    [26] ---------- (1899b). "Letter : Frege to Hilbert", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.34-38
    [27] ---------- (1899c). "Letter : Hilbert to Frege", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.38-41
    [28] ---------- (1902?). "Letter : Frege to Huntington", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.57-59
    [29] ---------- (1903a). "The Basic Laws of Arithmetic V.2", in Translations from the Philosophical Writings of Gottlob Frege, translated by Peter Geach & Max Black (1960), Basil Blackwell, pp.137-244
    [30] ---------- (1903b)." On the Foundations of Geometry" in The Foundations of Geometry & Formal Theories of Arithmetic, translated by Erike-Henner W.Kluge (1971), Yale University Press, pp.22-37
    [31] ---------- (1906a). "Introduction to Logic", in Posthumous Writings, Edited by Hermes, Friedrich Kambertel & Friedrich Kaulbach (1979), Basil Blackwell, pp.185-196
    [32] ---------- (1906b). "On Shoenfliess : Die Logischen Paradoxien der Mengenlehre", in Posthumous Writings, Edited by Hermes, Friedrich Kambertel & Friedrich Kaulbach (1979), Basil Blackwell, pp.176-183
    [33] ---------- (1906c)." On the Foundations of Geometry" in The Foundations of Geometry & Formal Theories of Arithmetic, translated by Erike-Henner W.Kluge (1971), Yale University Press, pp.49-112
    [34] ---------- (1906d). "Letters to Husserl", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.66-69
    [35] ---------- (1914a). "Logic in Mathematics", in Posthumous Writings, Edited by Hermes, Friedrich Kambertel & Friedrich Kaulbach (1979), Basil Blackwell, pp.203-250
    [36] ---------- (1914b). "Logic in Mathematics", in Frege's Lectures on Logic. Carnap's Student Notes, Edited by Gottfried Gabriel (2004), University of Pittsburg, pp.135-166
    [37] ---------- (1915). "My Basic Logical Insights", in The Frege Reader, Edited. by Michael Beaney (1997), Basil Blackwell, pp.322-324
    [38] ---------- (1919). "Letter : Frege to Linke", in Philosophical & Mathematical Correspondence, Edited by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.95-98
    [39] ---------- (1923-6). "Compound Thoughts", in Collected Papers on Mathematics, Logic & Philosophy, Edited by Brian McGuinnes (1984), Basil Blackwell, pp.390-406
    [40] ---------- (1924/5). "Sources of Knowledge of Mathematics and Mathematical Natural Sciences", in Posthumous Writings, Edited by Hermes, Friedrich Kambertel & Friedrich Kaulbach (1979), Basil Blackwell, pp.267-274
    [41] Gabriel, Gottfried, "Introduction: Frege's Lectures on Beggriffschrift", in Frege's Lectures on Logic. Carnap's Student Notes, Edited by Gottfried Gabriel (2004), University of Pittsburg, pp.1-16
    [42] Gut, Arkadiusz, "Priority of Thought or Priority of Language" in Philosophy of Language and Linguistics, edited by Piotr Stalmaszczyk (2014), De Gruyter, pp.71-98
    [43] Hawley, Katherine, "Neo-Fregeanism and Quantifier Variance" in Proceedings of the Aristotelian Society, Vol. 81 (2007), Oxford University Press, pp. 233-249
    [44] Heck, Richard G. (2012). Reading Frege's Grundgesetze, Clarendon Press
    [45] Hirsch, Eli, (2011). Quantifier Variance and Realism, Oxford University Press
    [46] Hofweber, Thomas, "Ambitious, Yet Modest Metaphysics" in Metametaphysics edited by David Chalmers, David Manley & Ryan Wasserman (2009), Clarendon Press, pp.260-289
    [47] Kluge, Erike-Henner W. "Introduction" in The Foundations of Geometry & Formal Theories of Arithmetic, translated by Erike-Henner W.Kluge (1971), Yale University Press, pp.xi-xlii
    [48] MacBride, Fraser, "Neo-Fregean Meta-Ontology: Just Don't Ask Too Many Questions" in Abstractionism: Essays in Philosophy of Mathematics edited by P. Ebret & M. Rossberg (2016), Oxford University Press, pp.94-112
    [49] Manley, David, "Introduction: A Guided Tour of Metametaphysics" in Metametaphysics edited by David Chalmers, David Manley & Ryan Wasserman (2009), Clarendon Press, pp.1-37
    [50] McCulloch, Gregory (1989). The Game of the Name, Oxford University Press
    [51] McDaniel, Kris (2017). The Fragmentation of Being, Oxforf University Press
    [52] Reck, Erich H. & Awodey, Steve. "Frege's Lectures on Logic and their Influence" in Frege's Lectures on Logic. Carnap's Student Notes, Edited by Gottfried Gabriel (2004), University of Pittsburg, pp.17-44
    [53] Reck, Erich H., "Frege on Truth, Judgment and Objectivity" in Essays on Frege's Conception of Truth, Edited by Dirk Greimann (2007), Rodopi, pp.149-174
    [54] Schiffer, Stephen, "Language-Created Language-Independent Entities" in Philosophical Topics, V.24 No.1, Metaphysics (Spring 1996), pp.149-167
    [55] Sider, Theodore, "Neo-Fregeanism and Quantifier Variance" in Proceedings of the Aristotelian Society, Vol. 81 (2007), Oxford University Press, pp. 201-232
    [56] Sluga, Hans (1980). Gottlob Frege, Routledge
    [57] Stalmaszczyk, Piotr, "The Legacy of Frege and the Linguistic Theory of Predication" in Philosophy of Language and Linguistics, edited by Piotr Stalmaszczyk (2014), De Gruyter, pp.225-254
    [58] Textor Mark (2011). Frege on Sense and Reference, Routledge
    [59] Thomasson, Amie L. (2007). Ordinary Objects, Oxford University Press
    [60] ---------- "Fictional Discourse and Fictionalisms" in Fictional Objects, edited by Stuart Brock and Anthony Everett (2015), Oxford Scholarship Online
    [61] Wright Crispin (1983). Frege's Conception of Numbers as Objects, Aberdeen University Press
    [62] ---------- & Hale, Bob "The Reason's Proper Study: Essays towards a Neo-Fregean
    Philosophy of Mathematics" in Oxford Scholarship Online: Nov-03 (2001), pp.117-159
    [63] ---------- & Hale, Bob "The Metaontology of Abstraction" in Metametaphysics edited by David Chalmers, David Manley & Ryan Wasserman (2009), Clarendon Press, pp.178-212
  2. Beaney M (1996). Frege: Making sense. London: Duckworth. [Link]
  3. Beaney M (1997). The Frege reader. In: Beaney M, editor. New Jersy: Basil Blackwell. pp. 1-46. [Link]
  4. Beaney M (2007). Frege's use of function-argument analysis and his introduction of truth-values as objects. In: Greimann D, editor. Essays on Frege's conception of truth. Leiden: Brill Publishers. pp. 93-124. [Link] [DOI:10.1163/9789401204026_005]
  5. Bell D (1979). Frege's theory of judgment. Oxford: Oxford University Press. [Link]
  6. Benacerraf P (1973). Mathematical truth. Journal of Philosophy. 70(19):661-679. [Link] [DOI:10.2307/2025075]
  7. Berto F, Plebani M (2015). Ontology and Metaontology: A contemporary guide. London: Bloomsbury. [Link]
  8. Burge T (2005). Truth, thought, reason: Essays on Frege. New York: Clarendon Press. [Link] [DOI:10.1093/acprof:oso/9780199278534.001.0001]
  9. Carl W (1994). Frege's theory of sense and reference: Its origin and scope. Cambridge: Cambridge University Press. [Link] [DOI:10.1017/CBO9781139172356]
  10. Carnap R (1950). Empiricism, semantics, and ontology. Revue Internationale de Philosophie. 4(11):20-40. [Link]
  11. Currie G (1982). Frege: An introduction to his philosophy. Tijdschrift Voor Filosofie. 46(2):353-354. [Link]
  12. Dummett M (1973). Frege: Philosophy of Language. London: Duckworth. [Link]
  13. Dummett M (1991a). Frege and Other Philosophers. Oxford: Oxford University Press. [Link]
  14. Dummett M (1991b). Frege: Philosophy of mathematics. London: Duckworth. [Link]
  15. Eklund M (2006). Neo-Fregean ontology. Philosophical Perspectives. 20(1):95-121. [Link] [DOI:10.1111/j.1520-8583.2006.00104.x]
  16. Eklund M (2009). Carnap and ontological pluralism. In: Chalmers D, Manley D, Wasserman R, editors. Metametaphysics: New essays on the foundations of ontology. Oxford: Clarendon Press. pp. 130-157. [Link] [DOI:10.1093/oso/9780199546046.003.0004]
  17. Forth M (1964). The Basic Laws of Arithmetic (Volume 1). Punjab: UCP. pp. v-vii. [Link]
  18. Frege G (1950). The foundations of arithmetic. Austin JL, translator. New Jersy: Basil Blackwell. [Link]
  19. Frege G (1891). Letter: Frege to Husserl. In: Gabriel G, Hermes H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and Mathematical Correspondence. New Jersey: Basil Blackwell. pp. 61-63. [Link]
  20. Frege G (1892). On concept and object. Geach P, Black M, translators. New Jersey: Basil Blackwell. pp. 42-55. [Link]
  21. Frege G (1893). The basic laws of arithmetic (Volume 1). Furth M, translator. Punjab: UCP. [Link]
  22. Frege G (1895). Letter: Frege to Hilbert. In: Gabriel G, Hermes H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and mathematical correspondence. New Jersey: Basil Blackwell. pp. 32-34. [Link]
  23. Frege G (1896). Letter: Frege to Peano. In: Gabriel G, Hermes H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and mathematical correspondence. New Jersey: Basil Blackwell. pp. 112-118. [Link]
  24. Frege G (1897a). Logic. In: Hermes H, Kambertel F, Kaulbach F, editors. Posthumous writings. New Jersey: Blackwell. pp. 126-151. [Link]
  25. Frege G (1897b). On Mr. Peano's conceptual notation and my own. In: McGuinness B, editor. Collected papers on mathematics, logic, and philosophy. New Jersey: Basil Blackwell. pp. 234-248. [Link]
  26. Frege G (1899a). On Mr. H. Schubert's numbers. In: McGuinness B, editor. Collected papers on mathematics, logic, and philosophy. New Jersey: Basil Blackwell. pp. 249-272. [Link]
  27. Frege G (1899b). Letter: Frege to Hilbert. In: Gabriel G, Hermes H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and Mathematical Correspondence. New Jersey: Basil Blackwell. pp. 34-38a. [Link]
  28. Frege G (1902). Letter: Frege to Huntington. In: Gabriel G, Hermes H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and Mathematical Correspondence. New Jersey: Basil Blackwell. pp. 57-59. [Link]
  29. Frege G (1903a). The basic laws of arithmetic (Volume 2). Geach P, Black M, translators. Translations from the Philosophical Writings of Gottlob Frege. New Jersey: Basil Blackwell. pp. 137-244. [Link]
  30. Frege G (1903b). On the foundations of geometry. Kluge EHW, translator. The foundations of geometry and formal theories of arithmetic. London: Yale University Press. pp. 22-37. [Link]
  31. Frege G (1906a). Introduction to logic. Long P, White RM, translators. Posthumous writings. New Jersey: Basil Blackwell. pp. 185-196. [Link]
  32. Frege G (1906b). On shoenfliess: Die logischen paradoxien der mengenlehre. In: Hermes H, Kambertel F, Kaulbach F, editors. Posthumous writings. New Jersey: Basil Blackwell. pp. 176-183. [Link]
  33. Frege G (1906c). On the foundations of geometry. Kluge EHW, translator. The foundations of geometry and formal theories of arithmetic. London: Yale University Press. pp. 49-112. [Link]
  34. Frege G (1906d). Letters to Husserl. In: Gabriel G, Hermes H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and mathematical correspondence. New Jersey: Basil Blackwell. pp. 66-69. [Link]
  35. Frege G (1914a). Logic in mathematics. Long P, White RM, translators. Posthumous writings. New Jersey: Basil Blackwell. pp. 203-250. [Link]
  36. Frege G (1914b). Logic in mathematics. In: Gabriel G, editor. Frege's lectures on logic: Carnap's Student Notes 1910-1914. Pennsylvania: University of Pittsburgh Press. pp. 135-166. [Link]
  37. Frege G (1915). My basic logical insights. In: Beaney M, editor. The Frege reader. New Jersey: Basil Blackwell. pp. 322-324. [Link]
  38. Frege G (1919). Letter: Frege to Linke. In: Gabriel G, Hermes H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and Mathematical Correspondence. New Jersey: Basil Blackwell. pp. 95-98. [Link]
  39. Frege G (1923). Compound thoughts. In: McGuinness B, editor. Collected papers on mathematics, logic and philosophy. New Jersey: Basil Blackwell. pp. 390-406. [Link]
  40. Frege G (1924). Sources of knowledge of mathematics and mathematical natural sciences. Long P, White RM, translators. Posthumous writings. New Jersey: Basil Blackwell. pp. 267-274. [Link]
  41. Gut A (2014). Priority of thought or priority of language. In: Stalmaszczyk P, editor. Philosophy of language and linguistics. Berlin: De Gruyter. pp. 71-98. [Link] [DOI:10.1515/9783110342758.71]
  42. Hawley K (2007). Neo-Fregeanism and quantifier variance. Proceedings of the Aristotelian Society (Oxford University Press). 81:233-249. [Link] [DOI:10.1111/j.1467-8349.2007.00157.x]
  43. Heck RG (2012). Reading Frege's Grundgesetze. Oxford: Clarendon Press. [Link]
  44. Hilbert D (1899). Letter: Hilbert to Frege. In: Gabriel G, Herme H, Kambartel F, Thiel C, Veraart A, editors. Philosophical and Mathematical Correspondence. New Jersey: Basil Blackwell. pp. 38-41. [Link]
  45. Hirsch E (2011). Quantifier variance and realism. Oxford: Oxford University Press. [Link] [DOI:10.1093/acprof:osobl/9780199732111.001.0001]
  46. Hofweber T (2009). Ambitious yet modest metaphysics. In: Chalmers D, Manley D, Wasserman R, editors. Metametaphysics. Oxford: Oxford University Press. pp. 260-289. [Link] [DOI:10.1093/oso/9780199546046.003.0009]
  47. Kluge EHW (1971). In the foundations of geometry and formal theories of arithmetic. London: Yale University Press. [Link]
  48. MacBride F (2016). Neo-Fregean meta-ontology: Just don't ask too many questions. In: Ebret P, Rossberg M, editors. Abstractionism: Essays in the philosophy of mathematics. Oxford: Oxford University Press. pp. 94-112. [Link] [DOI:10.1093/acprof:oso/9780199645268.003.0005]
  49. Manley D (2009). Introduction: A guided tour of metametaphysics. In: Chalmers D, Manley D, Wasserman R, editors. Metametaphysics. Oxford: Clarendon Press. pp. 1-37. [Link] [DOI:10.1093/oso/9780199546046.003.0001]
  50. McCulloch G (1989). The game of the name. Oxford: Clarendon Press. [Link]
  51. McDaniel K (2017). The fragmentation of being. Oxford: Oxford University Press. [Link] [DOI:10.1093/oso/9780198719656.001.0001]
  52. Reck EH, Awodey S (2004). Frege's lectures on logic and their influence. In: Gabriel G, editor. Frege's lectures on logic: Carnap's student notes. Pennsylvania: University of Pittsburg. pp. 17-44. [Link]
  53. Reck EH (2007). Frege on truth, judgment, and objectivity. In: Greimann D, editor. Essays on Frege's conception of truth. Amsterdam: Rodopi. pp. 149-174. [Link] [DOI:10.1163/9789401204026_007]
  54. Schiffer S (1996). Language-created language-independent entities. Metaphysics. 24(1):149-167. [Link] [DOI:10.5840/philtopics199624117]
  55. Sider T (2007). Neo-Fregeanism and quantifier variance. Proceedings of the Aristotelian Society (Oxford University Press). 81:201-232. [Link] [DOI:10.1111/j.1467-8349.2007.00156.x]
  56. Sluga H (1980). Gottlob Frege. London: Routledge. [Link]
  57. Stalmaszczyk P (2014). The legacy of Frege and the linguistic theory of predication. In: Stalmaszczyk P, editor. Philosophy of language and linguistics. Berlin: De Gruyter. pp. 225-254. [Link] [DOI:10.1515/9783110342758.225]
  58. Textor M (2011). Frege on Sense and Reference. London: Routledge. [Link]
  59. Thomasson AL (2007). Ordinary Objects. Oxford: Oxford University Press. [Link] [DOI:10.1093/acprof:oso/9780195319910.001.0001]
  60. Thomasson AL (2015). Fictional discourse and fictionalisms. In: Brock S, Everett A, editors. Fictional objects. Oxford: Oxford University Press. pp. 255-174. [Link] [DOI:10.1093/acprof:oso/9780198735595.003.0011]
  61. Van Inwagen P (2009). Being, existence, and ontological commitment. In: Chalmers D, Manley D, Wasserman R, editors. Metametaphysics. Oxford: Clarendon Press. pp. 472-506. [Link] [DOI:10.1093/oso/9780199546046.003.0016]
  62. Wright C (1983). Frege's conception of numbers as objects. Aberdeen: Aberdeen University Press. [Link]
  63. Wright C, Hale B (2001). The reason's proper study: Essays towards a Neo-Fregean philosophy of mathematics. Oxford: Clarendon Press. [Link]
  64. Wright C, Hale B (2009). The meta ontology of abstraction. In: Chalmers D, Manley D, Wasserman R, editors. Metametaphysics. Oxford: Clarendon Press. pp. 178-212. [Link] [DOI:10.1093/oso/9780199546046.003.0006]