WG
2010
Springer
13 years 10 months ago
2010
Springer
The problem of determining the cutwidth of a graph is a notoriously hard problem which remains NP-complete under severe restrictions on input graphs. Until recently, non-trivial p...
WG
2010
Springer
13 years 10 months ago
2010
Springer
WG
2010
Springer
13 years 10 months ago
2010
Springer
The vertex colouring problem is known to be NP-complete in the class of triangle-free graphs. Moreover, it remains NP-complete even if we additionally exclude a graph F which is n...
WG
2010
Springer
13 years 10 months ago
2010
Springer
We prove that for sufficiently large n, there exist unit disk graphs on n vertices such that for every representation with disks in the plane at least c √ n bits are needed to wr...
WG
2010
Springer
13 years 10 months ago
2010
Springer
Θk-graphs are geometric graphs that appear in the context of graph navigation. The shortest-path metric of these graphs is known to approximate the Euclidean complete graph up to...
WG
2010
Springer
13 years 10 months ago
2010
Springer
Abstract. We study the Arc-Preserving Subsequence (APS) problem with unlimited annotations. Given two arc-annotated sequences P and T, this problem asks if it is possible to delete...