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LICS
1997
IEEE
15 years 8 months ago
Ground Reducibility is EXPTIME-Complete
Abstract. We prove that ground reducibility is EXPTIME-complete in the general case. EXPTIME-hardness is proved by encoding the emptiness problem for the intersection of recognizab...
Hubert Comon, Florent Jacquemard
CDB
1997
Springer
85views Database» more  CDB 1997»
15 years 8 months ago
On Expressing Topological Connectivity in Spatial Datalog
We consider two-dimensional spatial databases defined in terms of polynomial inequalities and investigate the expressibility of the topological connectivity query for these databa...
Bart Kuijpers, Marc Smits
ICLP
1997
Springer
15 years 8 months ago
Non-Failure Analysis for Logic Programs
We provide a method whereby, given mode and (upper approximation) type information, we can detect procedures and goals that can be guaranteed to not fail (i.e., to produce at leas...
Saumya K. Debray, Pedro López-García...
TAPSOFT
1997
Springer
15 years 8 months ago
An Applicative Module Calculus
The SML-like module systems are small typed languages of their own. As is, one would expect a proof of their soundness following from a proof of subject reduction. Unfortunately, t...
Judicaël Courant
CAV
1994
Springer
113views Hardware» more  CAV 1994»
15 years 8 months ago
A Determinizable Class of Timed Automata
We introduce event-recording automata. An event-recording automaton is a timed automaton that contains, for every event a, a clock that records the time of the last occurrence of a...
Rajeev Alur, Limor Fix, Thomas A. Henzinger