71 search results - page 13 / 15 » Characterizing path graphs by forbidden induced subgraphs |
COMBINATORICS
2006
13 years 7 months ago
2006
A set M of edges of a graph G is a matching if no two edges in M are incident to the same vertex. The matching number of G is the maximum cardinality of a matching of G. A set S o...
IPL
2008
13 years 7 months ago
2008
A hub set in a graph G is a set U V (G) such that any two vertices outside U are connected by a path whose internal vertices lie in U. We prove that h(G) hc(G) c(G) h(G) + 1, ...
FSTTCS
2010
Springer
13 years 5 months ago
2010
Springer
In the Connected Dominating Set problem we are given as input a graph G and a positive integer k, and are asked if there is a set S of at most k vertices of G such that S is a dom...
STOC
2005
ACM
14 years 7 months ago
2005
ACM
A graph property is called monotone if it is closed under taking (not necessarily induced) subgraphs (or, equivalently, if it is closed under removal of edges and vertices). Many ...
JMLR
2012
11 years 9 months ago
2012
We consider the sparse inverse covariance regularization problem or graphical lasso with regularization parameter λ. Suppose the sample covariance graph formed by thresholding th...