70 search results - page 10 / 14 » The complexity of counting graph homomorphisms |
STACS
2007
Springer
14 years 1 months ago
2007
Springer
Abstract. The perfect matching problem is known to be in ¶, in randomized NC, and it is hard for NL. Whether the perfect matching problem is in NC is one of the most prominent ope...
SMA
2003
ACM
14 years 21 days ago
2003
ACM
In this paper a graph-based method is presented which not only characterizes topological classification of the tessellated surfaces but also simultaneously generates the substanti...
CP
2009
Springer
14 years 8 months ago
2009
Springer
The goal of testing is to distinguish between a number of hypotheses about a systemfor example, dierent diagnoses of faults by applying input patterns and verifying or falsifying t...
CORR
2007
Springer
13 years 7 months ago
2007
Springer
— Measuring network flow sizes is important for tasks like accounting/billing, network forensics and security. Per-flow accounting is considered hard because it requires that m...
ICALP
2007
Springer
14 years 1 months ago
2007
Springer
We present algebraic conditions on constraint languages Γ that ensure the hardness of the constraint satisfaction problem CSP(Γ) for complexity classes L, NL, P, NP and ModpL. Th...