111 search results - page 19 / 23 » Solving the feedback vertex set problem on undirected graphs |
CORR
2010
Springer
13 years 8 months ago
2010
Springer
Bidimensionality theory appears to be a powerful framework for the development of metaalgorithmic techniques. It was introduced by Demaine et al. [J. ACM 2005 ] as a tool to obtai...
WAW
2007
Springer
14 years 2 months ago
2007
Springer
Motivated by the problem of detecting link-spam, we consider the following graph-theoretic primitive: Given a webgraph G, a vertex v in G, and a parameter δ ∈ (0, 1), compute th...
WADS
2007
Springer
14 years 2 months ago
2007
Springer
A ball graph is an intersection graph of a set of balls with arbitrary radii. Given a real number t > 1, we say that a subgraph G′ of a graph G is a t-spanner of G, if for eve...
IWPEC
2009
Springer
14 years 3 months ago
2009
Springer
We study the Equitable Connected Partition problem, which is the problem of partitioning a graph into a given number of partitions, such that each partition induces a connected sub...
JCSS
2000
13 years 8 months ago
2000
It is a well-known result of Fagin that the complexity class NP coincides with the class of problems expressible in existential second-order logic ( 1 1), which allows sentences c...