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Extensional interpretations of modal logics

Published online by Cambridge University Press:  12 March 2014

M. H. Löb
M. H. Löb*
Affiliation:
University of Leeds
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Extract

By ΡL we shall mean the first order predicate logic based on S4. More explicitly: Let Ρ0 stand for the first order predicate calculus. The formalisation of Ρ0 used in the present paper will be given later. ΡL is obtained from Ρ0 by adding the rules the propositional constant □ and

Type
Research Article
Information
The Journal of Symbolic Logic , Volume 31 , Issue 1 , March 1966 , pp. 23 - 45
Copyright
Copyright © Association for Symbolic Logic 1996

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References

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