3471 search results - page 145 / 695 » Obstacle Numbers of Graphs |
JCT
2007
13 years 9 months ago
2007
An edge in a drawing of a graph is called even if it intersects every other edge of the graph an even number of times. Pach and T´oth proved that a graph can always be redrawn so...
ICALP
2009
Springer
14 years 10 months ago
2009
Springer
We introduce a generic approach for counting subgraphs in a graph. The main idea is to relate counting subgraphs to counting graph homomorphisms. This approach provides new algori...
FOCS
2003
IEEE
14 years 3 months ago
2003
IEEE
We show that random graphs in the preferential connectivity model have constant conductance, and hence have worst-case routing congestion that scales logarithmically with the numb...
CORR
2010
Springer
13 years 9 months ago
2010
Springer
We study a general class of problems called F -Deletion problems. In an F -Deletion problem, we are asked whether a subset of at most k vertices can be deleted from a graph G such...
IPL
2006
13 years 9 months ago
2006
An N-superconcentrator is a directed, acyclic graph with N input nodes and N output nodes such that every subset of the inputs and every subset of the outputs of same cardinality ...