57 search results - page 3 / 12 » On Approximating Minimum Vertex Cover for Graphs with Perfec... |
JGT
2006
13 years 4 months ago
2006
It is well known that every bipartite graph with vertex classes of size n whose minimum degree is at least n/2 contains a perfect matching. We prove an analogue of this result for...
TCS
2008
13 years 4 months ago
2008
The edge dominating set (EDS) and edge cover (EC) problems are classical graph covering problems in which one seeks a minimum cost collection of edges which covers the edges or ve...
STOC
2010
ACM
13 years 9 months ago
2010
ACM
We consider the problem of maintaining a large matching and a small vertex cover in a dynamically changing graph. Each update to the graph is either an edge deletion or an edge in...
WDAG
2009
Springer
13 years 11 months ago
2009
Springer
We present a distributed 2-approximation algorithm for the minimum vertex cover problem. The algorithm is deterministic, and it runs in (∆ + 1)2 synchronous communication rounds,...
STOC
2002
ACM
14 years 5 months ago
2002
ACM
The Minimum Vertex Cover problem is the problem of, given a graph, finding a smallest set of vertices that touches all edges. We show that it is NP-hard to approximate this proble...