540 search results - page 69 / 108 » New bounds on the edge number of a k-map graph |
DAM
2008
13 years 9 months ago
2008
Let G = (V, E) be a graph with vertex set V and edge set E. The k-coloring problem is to assign a color (a number chosen in {1, . . . , k}) to each vertex of G so that no edge has...
ESA
2006
Springer
14 years 17 days ago
2006
Springer
We consider the following vertex coloring problem. We are given an undirected graph G = (V, E), where each vertex v is associated with a penalty rejection cost rv. We need to choos...
FOCS
2002
IEEE
14 years 1 months ago
2002
IEEE
We prove that coloring a 3-uniform 2-colorable hypergraph with c colors is NP-hard for any constant c. The best known algorithm [20] colors such a graph using O(n1/5 ) colors. Our...
COMPGEOM
1992
ACM
14 years 1 months ago
1992
ACM
Suppose we are given a sequence of n points in the Euclidean plane, and our objective is to construct, on-line, a connected graph that connects all of them, trying to minimize the...
ESA
2009
Springer
14 years 1 months ago
2009
Springer
Let (S, d) be a finite metric space, where each element p ∈ S has a non-negative weight w(p). We study spanners for the set S with respect to weighted distance function dw, wher...