Lettera Matematica

, Volume 6, Issue 1, pp 57–63 | Cite as

Where points came from

  • Gianni Rigamonti


The central thesis of this work, argued through references to authors widely separated in time (Pasch, Cantor and Hilbert, but also Plato and Euclid), is that the notion of point as an independent object inevitably produces paradoxes that can only be eliminated if we take points not as entities with an independent, primary reality of their own, but simply as reifications of a methodological choice, namely that of neglecting in pure theory any measuring mistake, however small. Thus, for example, we associate exact positions to a line’s extremes, with no indeterminacy at all, and call these positions points.


Points Continuum 


  1. 1.
    Cantor, G.: Grundlagen einer allgemeinen Mannigfaltigkeitslehre (Foundations of a general theory of manifolds). In: Zermelo, E. (ed.) Gesammelte Werke mathematischen und philosophischen Inhalts (Collected works of mathematical and philosophical content), pp. 165–209. Olms, Hildesheim (1932; repr. 1962)Google Scholar
  2. 2.
    Euclid: The Thirteen Books of the Elements. Thomas L. Heath, ed. and trans. Cambridge University Press, Cambridge (1908) (repr. Dover Publications, New York 1956)Google Scholar
  3. 3.
    Pasch, M.: Vorlesungen über neuere Geometrie. Teubner, Leipzig (1882)MATHGoogle Scholar

Copyright information

© Centro P.RI.ST.EM, Università Commerciale Luigi Bocconi 2018

Authors and Affiliations

  1. 1.PalermoItaly

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