112 search results - page 8 / 23 » An Improved Bound on the Minimal Number of Edges in Color-Cr... |
SIROCCO
2007
13 years 9 months ago
2007
Abstract. A large group of autonomous, mobile entities e.g. robots initially placed at some arbitrary node of the graph has to jointly visit all nodes (not necessarily all edges) a...
COMBINATORICA
2010
13 years 2 months ago
2010
We prove that the edges of every graph of bounded (Euler) genus can be partitioned into any prescribed number k of pieces such that contracting any piece results in a graph of bou...
ALGORITHMICA
2000
13 years 7 months ago
2000
We present an O(NV +V 3) time algorithm for enumerating all spanning trees of a directed graph. This improves the previous best known bound of O(NE + V + E) [1] when V 2 = o(N), wh...
JCT
2007
13 years 7 months ago
2007
We prove results on the size of weakly and strongly separating set systems and matrices, and on cross-intersecting systems. As a consequence, we improve on a result of Katona and ...
ISBRA
2009
Springer
14 years 2 months ago
2009
Springer
A tanglegram is a pair of trees on the same set of leaves with matching leaves in the two trees joined by an edge. Tanglegrams are widely used in biology – to compare evolutiona...