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The implicational fragment of Dummett's LC

Published online by Cambridge University Press:  12 March 2014

R. A. Bull*
Affiliation:
Manchester University

Extract

It has been shown in Dummett [1] that the system LC given by Heyting's Calculus plus the additional axiom ACpqCqp is complete with respect to the model having as truth values the integers 0, 1,2, … and ω, 0 being the designated value, with

In this system CCCpqrCCCqprr is equivalent to ACpqCqp, and the purpose of this paper is to show that the implicational fragment of Heyting's Calculus plus the additional axiom CCCpqrCCCqprr yields the implicational fragment of LC.

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 1962

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References

[1]Dummett, Michael, A prepositional calculus with denumerable matrix, this Journal, vol. 24 (1959) pp. 96107.Google Scholar
[2]Prior, A. N., Logicians at play; or Syll, Simp and Hilbert, Australasian Journal of Philosophy, vol. 34 (1956), pp. 182192.CrossRefGoogle Scholar