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Necessity and contingency

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Abstract

The paper considers the question of when the operator L of necessity in modal logic can be expressed in terms of the operator Δ meaning ‘it is non-contingent that’.

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References

  1. G. E. Hughes and M. J. Cresswell, A Companion to Modal Logic, London, Methuen, 1984.

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  2. H. A. Montgomery and F. R. Routley, Contingency and non-contingency bases for normal modal logics, Logique et Analyse, No 35–36, (1966), pp. 318–328.

  3. K. Segerberg, Classical Propositional Operators, Oxford, Clarendon Press, 1982.

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Authors and Affiliations

  1. Victoria University of Wellington, New Zealand

    M. J. Cresswell

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  1. M. J. Cresswell
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Cresswell, M.J. Necessity and contingency. Stud Logica 47, 145–149 (1988). https://doi.org/10.1007/BF00370288

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  • DOI: https://doi.org/10.1007/BF00370288

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