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ALGORITHMICA
2008
56views more  ALGORITHMICA 2008»
13 years 8 months ago
Eliminating Cycles in the Discrete Torus
In this paper we consider the following question: how many vertices of the discrete torus must be deleted so that no topologically nontrivial cycles remain? We look at two differe...
Béla Bollobás, Guy Kindler, Imre Lea...
APAL
2008
87views more  APAL 2008»
13 years 8 months ago
Characterising nested database dependencies by fragments of propositional logic
We extend the earlier results on the equivalence between the Boolean and the multivalued dependencies in relational databases and fragments of the Boolean propositional logic. It ...
Sven Hartmann, Sebastian Link
ENTCS
2006
112views more  ENTCS 2006»
13 years 8 months ago
Modeling Web Applications by the Multiple Levels of Integrity Policy
We propose a formal method to validate the reliability of a web application, by modeling interactions among its constituent objects. Modeling exploits the recent "Multiple Le...
Gianluca Amato, Massimo Coppola, Stefania Gnesi, F...
IANDC
2006
103views more  IANDC 2006»
13 years 8 months ago
Bisimulation and cocongruence for probabilistic systems
We introduce a new notion of bisimulation, called event bisimulation on labelled Markov processes (LMPs) and compare it with the, now standard, notion of probabilistic bisimulatio...
Vincent Danos, Josee Desharnais, François L...
JCO
2008
102views more  JCO 2008»
13 years 8 months ago
Stable matching problems with exchange restrictions
We study variants of classical stable matching problems in which there is an additional requirement for a stable matching, namely that there should not be two participants who wou...
Robert W. Irving