140 search results - page 27 / 28 » Maximum Series-Parallel Subgraph |
MST
2007
13 years 5 months ago
2007
Crown structures in a graph are defined and shown to be useful in kernelization algorithms for the classic vertex cover problem. Two vertex cover kernelization methods are discus...
STOC
2009
ACM
14 years 6 months ago
2009
ACM
The paper concerns graph spanners that are resistant to vertex or edge failures. Given a weighted undirected n-vertex graph G = (V, E) and an integer k 1, the subgraph H = (V, E ...
GC
2007
Springer
13 years 5 months ago
2007
Springer
We localize and strengthen Katona’s idea of an edge-toughness to a local topological toughness. We disprove a conjecture of Katona concerning the connection between edgetoughnes...
STOC
2009
ACM
14 years 6 months ago
2009
ACM
We prove strong lower bounds on integrality gaps of Sherali?Adams relaxations for MAX CUT, Vertex Cover, Sparsest Cut and other problems. Our constructions show gaps for Sherali?A...
IWPEC
2009
Springer
14 years 9 days ago
2009
Springer
An induced matching in graph G is a matching which is an induced subgraph of G. Clearly, among two vertices with the same neighborhood (called twins) at most one is matched in any...