124 search results - page 4 / 25 » Crossing Number of Toroidal Graphs |
ALGORITHMICA
2011
13 years 2 months ago
2011
We show that computing the crossing number and the odd crossing number of a graph with a given rotation system is NP-complete. As a consequence we can show that many of the well-k...
APVIS
2008
13 years 9 months ago
2008
We define the concept of crossing numbers for simultaneous graphs by extending the crossing number problem of traditional graphs. We discuss differences to the traditional crossin...
SOFSEM
2005
Springer
14 years 1 months ago
2005
Springer
An outerplanar (also called circular, convex, one-page) drawing of an n-vertex graph G is a drawing in which the vertices are placed on a circle and each edge is drawn using one s...
GD
2007
Springer
14 years 1 months ago
2007
Springer
We show that computing the crossing number of a graph with a given rotation system is NP-complete. This result leads to a new and much simpler proof of Hlinˇen´y’s result, tha...
ESA
2008
Springer
13 years 9 months ago
2008
Springer
We consider a planning problem that generalizes Alcuin's river crossing problem (also known as: The wolf, goat, and cabbage puzzle) to scenarios with arbitrary conflict graph...