Journal of Philosophical Logic

, Volume 26, Issue 3, pp 237–239 | Cite as

Constructing Cantorian counterexamples

  • George Boolos


Cantor’s diagonal argument provides an indirect proof that there is no one-one function from the power set of a set A into A. This paper provides a somewhat more constructive proof of Cantor’s theorem, showing how, given a function f from the power set of A into A, one can explicitly define a counterexample to the thesis that f is one-one.

Cantor diagonal argument set theory 

Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • George Boolos
    • 1
  1. 1.Department of Linguistics and PhilosophyMassachusetts Institute of TechnologyCambridgeU.S.A

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