797 search results - page 81 / 160 » Logics with an existential modality |
ENTCS
2007
14 years 9 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
15 years 3 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...
KR
2004
Springer
15 years 3 months ago
2004
Springer
Simple Conceptual Graphs (SGs) are used to represent entities and relations between these entities: they can be translated into positive, conjunctive, existential first-order log...
CORR
1999
Springer
14 years 9 months ago
1999
Springer
In this article, we study parameterized complexity theory from the perspective of logic, or more specifically, descriptive complexity theory. We propose to consider parameterized ...
SLP
1994
14 years 11 months ago
1994
We consider a hierarchy of modal event calculi to represent and reason about partially ordered events. These calculi are based on the model of time and change of Kowalski and Sergo...