174 search results - page 20 / 35 » Existential Fixed-Point Logic |
GG
2004
Springer
15 years 3 months ago
2004
Springer
We show how edge-labelled graphs can be used to represent first-order logic formulae. This gives rise to recursively nested structures, in which each level of nesting corresponds ...
UAI
2003
14 years 11 months ago
2003
Abstract. In Datalog, missing values are represented by Skolem constants. More generally, in logic programming missing values, or existentially quantified variables, are represent...
LOGCOM
2010
14 years 8 months ago
2010
This paper provides sound and complete logical systems for several fragments of English which go beyond syllogistic logic in that they use verbs as well as other limited syntactic...
CADE
2008
Springer
15 years 10 months ago
2008
Springer
Abstract. Tableau calculi are the state-of-the-art for reasoning in description logics (DL). Despite recent improvements, tableau-based reasoners still cannot process certain knowl...
JAR
2008
14 years 10 months ago
2008
Abstract. We propose to combine interactive proof construction with proof automation for a fragment of first-order logic called Coherent Logic (CL). CL allows enough existential qu...