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Necessity and contingency |
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| Authors: | M. J. Cresswell |
| Affiliation: | (1) Victoria University of Wellington, New Zealand |
| Abstract: | The paper considers the question of when the operator L of necessity in modal logic can be expressed in terms of the operator  meaning  it is non-contingent that .This paper was presented by title at the 1986 Annual Conference of the Australasian Association of Logic in Auckland, 9–12 July, 1986. |
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