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Tree decomposition / Complexity classes / Conjunctive query / Graph homomorphism / Hypergraph / Hypercube graph / Structure / FO / Graph theory / Theoretical computer science / Mathematics
Date: 2015-01-08 10:43:54
Tree decomposition
Complexity classes
Conjunctive query
Graph homomorphism
Hypergraph
Hypercube graph
Structure
FO
Graph theory
Theoretical computer science
Mathematics

Efficient Approximations of Conjunctive Queries Pablo Barcel´o1 1 Leonid Libkin2

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