17 search results - page 2 / 4 » Choosability in geometric hypergraphs |
CCCG
2010
13 years 7 months ago
2010
We prove that any finite set of half-planes can be colored by two colors so that every point of the plane, which belongs to at least three half-planes in the set, is covered by ha...
CORR
2010
Springer
13 years 5 months ago
2010
Springer
The overlap number of a finite (d + 1)-uniform hypergraph H is the largest constant c(H) (0, 1] such that no matter how we map the vertices of H into Rd , there is a point covered...
DGCI
2005
Springer
13 years 11 months ago
2005
Springer
Abstract. We give an overview of the main ideas and tools that have been employed in uncertain geometry. We show how several recognition problems in computer vision can be translat...
WAOA
2010
Springer
13 years 3 months ago
2010
Springer
We study approximation solutions for the densest k-subgraph problem (DS-k) on several classes of intersection graphs. We adopt the concept of -quasi elimination orders, introduced ...
CORR
2008
Springer
13 years 5 months ago
2008
Springer
In Graph Minors III, Robertson and Seymour write:"It seems that the tree-width of a planar graph and the tree-width of its geometric dual are approximately equal -- indeed, w...