131 search results - page 8 / 27 » Crossing Number and Weighted Crossing Number of Near-Planar ... |
ESA
2008
Springer
13 years 8 months ago
2008
Springer
The crossing number problem is to find the smallest number of edge crossings necessary when drawing a graph into the plane. Eventhough the problem is NP-hard, we are interested in ...
ENDM
2008
13 years 6 months ago
2008
The nth crossing number of a graph G, denoted crn(G), is the minimum number of crossings in a drawing of G on an orientable surface of genus n. We prove that for every a > b &g...
CORR
2010
Springer
13 years 3 months ago
2010
Springer
We introduce a new technique for proving kernelization lower bounds, called cross-composition. A classical problem L cross-composes into a parameterized problem Q if an instance o...
JCT
2007
13 years 6 months ago
2007
A topological graph is quasi-planar, if it does not contain three pairwise crossing edges. Agarwal et al. [2] proved that these graphs have a linear number of edges. We give a sim...
WALCOM
2010
IEEE
14 years 1 months ago
2010
IEEE
Abstract. Directed graphs are commonly drawn by the Sugiyama algorithm, where crossing reduction is a crucial phase. It is done by repeated one-sided 2-level crossing minimizations...