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NDJFL
1998
100views more  NDJFL 1998»
13 years 4 months ago
Failure of Interpolation in Combined Modal Logics
We investigate transfer of interpolation in such combinations of modal logic which lead to interaction of the modalities. Combining logics by taking products often blocks transfer...
Maarten Marx, Carlos Areces
NDJFL
1998
85views more  NDJFL 1998»
13 years 4 months ago
Semi-Contraction: Axioms and Construction
Eduardo L. Fermé, Ricardo Oscar Rodrí...
NDJFL
1998
105views more  NDJFL 1998»
13 years 4 months ago
Idempotent Full Paraconsistent Negations are not Algebraizable
Using methods of abstract logic and the theory of valuation, we prove that there is no paraconsistent negation obeying the law of double negation and such that ¬(a ∧ ¬a) is a t...
Jean-Yves Béziau
NDJFL
1998
119views more  NDJFL 1998»
13 years 4 months ago
Bochvar-McCarthy Logic and Process Algebra
We propose a combination of Bochvar’s strict three-valued logic, McCarthy’s sequential three-valued logic, and process algebra via the condi
Jan A. Bergstra, Alban Ponse
NDJFL
1998
81views more  NDJFL 1998»
13 years 4 months ago
An Undecidable Linear Order That Is n-Decidable for All n
A linear order is n-decidable if its universe is N and the relations determined by n formulas are uniformly computable. This means that there is a computable procedure which, when ...
John Chisholm, Michael Moses