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145
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CORR
2008
Springer
143views Education» more  CORR 2008»
15 years 3 months ago
On combinations of local theory extensions
Many problems in mathematics and computer science can be reduced to proving the satisfiability of conjunctions of literals in a background theory which is often the extension of a ...
Viorica Sofronie-Stokkermans
135
Voted
PODS
2010
ACM
205views Database» more  PODS 2010»
15 years 8 months ago
Positive higher-order queries
We investigate a higher-order query language that embeds operators of the positive relational algebra within the simply-typed λ-calculus. Our language allows one to succinctly de...
Michael Benedikt, Gabriele Puppis, Huy Vu
IJCAI
2003
15 years 5 months ago
Causal Theories of Action: A Computational Core
We propose a framework for simple causal theories of action, and study the computational complexity in it of various reasoning tasks such as determinism, progression and regressio...
Jérôme Lang, Fangzhen Lin, Pierre Mar...
108
Voted
COCO
1998
Springer
103views Algorithms» more  COCO 1998»
15 years 8 months ago
Nonrelativizing Separations
We show that MAEXP, the exponential time version of the Merlin-Arthur class, does not have polynomial size circuits. This significantly improves the previous known result due to K...
Harry Buhrman, Lance Fortnow, Thomas Thierauf
STOC
1994
ACM
123views Algorithms» more  STOC 1994»
15 years 7 months ago
Natural proofs
Razborov and Rudich have shown that so-called natural proofs are not useful for separating P from NP unless hard pseudorandomnumber generators do not exist. This famous result is ...
Alexander A. Razborov, Steven Rudich