5 search results - page 1 / 1 » Hardness Results for Tournament Isomorphism and Automorphism |
MFCS
2007
Springer
13 years 11 months ago
2007
Springer
A tournament is a graph in which each pair of distinct vertices is connected by exactly one directed edge. Tournaments are an important graph class, for which isomorphism testing ...
FOCS
2000
IEEE
13 years 9 months ago
2000
IEEE
We show that the graph isomorphism problem is hard under DLOGTIME uniform AC0 many-one reductions for the complexity classes NL, PL (probabilistic logarithmic space) for every loga...
AMW
2011
12 years 8 months ago
2011
Abstract. We consider the problem of checking equivalence of conjunctive queries with inequalities under bag (multiset) semantics. The problem is known to be decidable in pspace an...
COCO
2009
Springer
13 years 11 months ago
2009
Springer
Graph Isomorphism is the prime example of a computational problem with a wide difference between the best known lower and upper bounds on its complexity. There is a significant ...
SIGMOD
2011
ACM
12 years 8 months ago
2011
ACM
Complex social and information network search becomes important with a variety of applications. In the core of these applications, lies a common and critical problem: Given a labe...