95 search results - page 19 / 19 » Covering a hypergraph of subgraphs |
STOC
2009
ACM
14 years 11 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...
APPROX
2006
Springer
14 years 2 months ago
2006
Springer
Motivated by applications in batch scheduling of jobs in manufacturing systems and distributed computing, we study two related problems. Given is a set of jobs {J1, . . . , Jn}, w...
GC
2007
Springer
13 years 10 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...
IWPEC
2009
Springer
14 years 5 months ago
2009
Springer
We study the Equitable Connected Partition problem, which is the problem of partitioning a graph into a given number of partitions, such that each partition induces a connected sub...
DAM
2011
13 years 5 months ago
2011
An edge-labeling λ for a directed graph G has a weak sense of direction (WSD) if there is a function f that satisfies the condition that for any node u and for any two label seq...