68 search results - page 8 / 14 » Canonicity and Completeness Results for Many-Valued Modal Lo... |
MLQ
2002
13 years 7 months ago
2002
We generalize the notion of a monadic algebra to that of a pseudomonadic algebra. In the same way as monadic algebras serve as algebraic models of epistemic modal system S5, pseudo...
AIML
2004
13 years 9 months ago
2004
We are going to show that the standard notion of Kripke completeness is the strongest one among many provably distinct algebraically motivated completeness properties, some of whic...
KGC
1993
Springer
13 years 11 months ago
1993
Springer
We establish the complexity of decision problems associated with the nonmonotonic modal logic S4. We prove that the problem of existence of an S4-expansion for a given set A of pr...
STACS
2007
Springer
14 years 1 months ago
2007
Springer
Hybrid logics extend modal logics by first-order concepts, in particular they allow a limited use of variables. Unfortunately, in general, satisfiability for hybrid formulas is u...
FUIN
2007
13 years 7 months ago
2007
We give formulations for modal deductive databases and present a modal query language called MDatalog. We define modal relational algebras and give the seminaive evaluation algor...