ECCC
2006
13 years 10 months ago
2006
ECCC
2006
13 years 10 months ago
2006
Traditional quantum state tomography requires a number of measurements that grows exponentially with the number of qubits n. But using ideas from computational learning theory, we...
ECCC
2006
13 years 10 months ago
2006
ECCC
2006
13 years 10 months ago
2006
In this paper we ask the question whether the extended Frege proof system EF satisfies a weak version of the deduction theorem. We prove that if this is the case, then complete dis...
ECCC
2006
13 years 10 months ago
2006
We present two new methods for finding a lowest common ancestor (LCA) for each pair of vertices of a directed acyclic graph (dag) on n vertices and m edges. The first method is su...
ECCC
2006
13 years 10 months ago
2006
ECCC
2006
13 years 10 months ago
2006
We consider the problem of amplifying uniform average-case hardness of languages in NP, where hardness is with respect to BPP algorithms. We introduce the notion of monotone error...
ECCC
2006
13 years 10 months ago
2006
ECCC
2006
13 years 10 months ago
2006
We investigate the computational complexity of finding an element of a permutation group H Sn with a minimal distance to a given Sn, for different metrics on Sn. We assume that...
ECCC
2006
13 years 10 months ago
2006
Suppose you ran a chess tournament, everybody played everybody, and you wanted to use the results to rank everybody. Unless you were really lucky, the results would not be acyclic...