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The Logical Problem of the Definition of Irrational Numbers [1927e]

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Selected Papers of Léon Rosenfeld

Part of the book series: Boston Studies in the Philosophy of Science ((BSPS,volume 21))

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Abstract

A legend records “that the author of the theory of incommensurables was swallowed up in a shipwreck. Thus heaven punished the one who had ‘expressed the inexpressible, represented the unfigurable, unveiled that which should have remained forever hidden’”.1

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Notes

  1. P. Boutroux., L’idéal scientifique des mathématiciens ( Alcan, Paris, 1920; P.U.F., Paris. 1955 ), p. 48.

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  2. From Heath, A History of Greek Mathematics. 2 vols. (Oxford 1921); see the index.

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  3. See Natucci. II Concetto di Numero e le sue Estensioni (Turin 1923) pp. 207 ff.

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  4. Ibid., pp. 357 ff.

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  5. C. Burali-Forti and R. Marcolongo., Analyse vectorielle générale, vols. I and II (Mattel, Pavia, 1912–13).

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  6. O. Perron, Irrationalzahlen (Leipzig 1921 ).

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  7. Revue des Sociétés Savantes (2). vol. IV. 1869: Leçons nouvelles sur l’analyse infintésimale. vol. I. ch. II. 1894.

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  8. Die Elemente der Funktionenlchre’. Crelle’s Journal, 1872.

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  9. For a comparison of the Cantorian and Dedekindian definitions of the continuum, see B. Russell, Introduction to Mathematical Philosophy, ch. X (George Allen and Unwin. London. 1919 ); B. Russell and A. N. Whitehead, Principia Mathematica, vol. III. *275 (Cambridge University Press, Cambridge, England. 1913 ).

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  10. Stetigkeit und irrationale Zahlen (Braunschweig 1872). I am quoting from a translation (unpublished) of the principal passages of the book that I made several years ago. (We have quoted the standard English translation: R. Dedekind. Essays on the Theory of Numbers (Open Court, Chicago. 1901), pp. 11–12, 15–Eds.]

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  11. Natucci. op. cit. (3), p. 259; cf. also Natucci, ‘Origine e Sviluppo del Concetto di Numbero irrazionale’, Scientia, 1925, pp. 293 ff.

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  12. Principia Mathematica, 3 vols., 1910–1911–1913. — Of course Russell and Whitehead found many much more important things than this.

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  13. Introduction to Mathematical Philosophy, op. cit., Note 9, p. 71.

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  14. Op cit., Note 11

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  15. Cf. Natucci., op. cit., Note 3. pp. 446–449: Poincaré. Science et méthode [English transi, by Ü B. Halsted in The Foundations of Science (Science Press, New York, 1913) — Ed.] and Dernières pensées (passim) (Flammarion. Paris. 1913). [English transl, by J. Bolduc: Mathematics and Science last Essays (New York. Dover reprint. 1963) — Ed.]

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  16. I presented this analysis at the Congress of the Association française pour l’Avancement des Sciences, held in Lyon in 1926.

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  17. For more precise definitions, see Russell and Whitehead, Principia Mathematica, vols. 2 and 3.

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  18. The numbers preceded by asterisks arc references to Principia Mathematica, vol. 3.

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  19. Op. cit., Note 6. p. 57.

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  20. Deruyts. Congress of the Association française pour l’Avancement des Sciences. Liège. 1924.

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Authors

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Robert S. Cohen John J. Stachel

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© 1979 D. Reidel Publishing Company, Dordrecht, Holland

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Cohen, R.S., Stachel, J.J. (1979). The Logical Problem of the Definition of Irrational Numbers [1927e]. In: Cohen, R.S., Stachel, J.J. (eds) Selected Papers of Léon Rosenfeld. Boston Studies in the Philosophy of Science, vol 21. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-9349-5_3

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  • DOI: https://doi.org/10.1007/978-94-009-9349-5_3

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