Computer Science – Computational Complexity
Scientific paper
2008-02-15
Computer Science
Computational Complexity
Scientific paper
We study the approximability of predicates on $k$ variables from a domain $[q]$, and give a new sufficient condition for such predicates to be approximation resistant under the Unique Games Conjecture. Specifically, we show that a predicate $P$ is approximation resistant if there exists a balanced pairwise independent distribution over $[q]^k$ whose support is contained in the set of satisfying assignments to $P$.
Austrin Per
Mossel Elchanan
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