365 search results - page 18 / 73 » On the Crossing Spanning Tree Problem |
SPAA
1993
ACM
14 years 1 months ago
1993
ACM
We give tight bounds on the parallel complexity of some problems involving random graphs. Speci cally, we show that a Hamiltonian cycle, a breadth rst spanning tree, and a maximal...
APPROX
2007
Springer
14 years 3 months ago
2007
Springer
A star graph is a tree of diameter at most two. A star forest is a graph that consists of node-disjoint star graphs. In the spanning star forest problem, given an unweighted graph ...
CORR
2008
Springer
13 years 9 months ago
2008
Springer
The Directed Maximum Leaf Out-Branching problem is to find an out-branching (i.e. a rooted oriented spanning tree) in a given digraph with the maximum number of leaves. In this pap...
FOCS
1996
IEEE
14 years 1 months ago
1996
IEEE
In thispaper we give a 3-approximationalgorithmfor the problem ojJnding a minimum tree spanning any k-vertices in a graph. Our algorithm extends to a 3-approximationalgorithmfor t...
TCAD
2008
13 years 9 months ago
2008
Given a set of pins and a set of obstacles on a plane, an obstacle-avoiding rectilinear Steiner minimal tree (OARSMT) connects these pins, possibly through some additional points (...