291 search results - page 29 / 59 » On the Complexity of Fragments of Modal Logics |
ENTCS
2007
13 years 7 months ago
2007
This paper establishes undecidability of satisfiability for multi-modal logic equipped with the hybrid binder ↓ , with respect to frame classes over which the same language wit...
FSTTCS
2005
Springer
14 years 1 months ago
2005
Springer
Hierarchical graph definitions allow a modular description of graphs using modules for the specification of repeated substructures. Beside this modularity, hierarchical graph de...
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...
IFIP
2004
Springer
14 years 1 months ago
2004
Springer
In this paper we study the complexity of the model-checking problem for the tree logic introduced as the basis for the query language TQL [Cardelli and Ghelli, 2001]. We define tw...
FLAIRS
2008
13 years 10 months ago
2008
We develop a formal system dealing `spatially' with certain aspects of uniformity and control during knowledge acquisition. To this end, we study an appropriate modality, whi...