553 search results - page 14 / 111 » Cover Contact Graphs |
84
Voted
COCOA
2008
Springer
14 years 12 months ago
2008
Springer
Connected Vertex Cover Problem (CVC) is an NP-hard problem. The currently best known approximation algorithm for CVC has performance ration 2. This paper gives the first Polynomial...
130
Voted
ESA
2010
Springer
14 years 11 months ago
2010
Springer
We consider the Minimum Vertex Cover problem in intersection graphs of axis-parallel rectangles on the plane. We present two algorithms: The first is an EPTAS for non-crossing rect...
79
Voted
JGT
2006
14 years 10 months ago
2006
Following [1], we investigate the problem of covering a graph G with induced subgraphs G1, . . . , Gk of possibly smaller chromatic number, but such that for every vertex u of G, ...
98
Voted
RSA
2011
14 years 5 months ago
2011
We study the cover time of random geometric graphs. Let I(d) = [0, 1]d denote the unit torus in d dimensions. Let D(x, r) denote the ball (disc) of radius r. Let Υd be the volume...
COMBINATORICS
2006
14 years 10 months ago
2006
A biclique is a complete bipartite subgraph of a graph. This paper investigates the fractional biclique cover number, bc(G), and the fractional biclique partition number, bp(G), o...