42 search results - page 2 / 9 » Approximating Minimum Max-Stretch spanning Trees on unweight... |
WAOA
2007
Springer
13 years 11 months ago
2007
Springer
For a connected graph G, let L(G) denote the maximum number of leaves in a spanning tree in G. The problem of computing L(G) is known to be NP-hard even for cubic graphs. We improv...
STOC
2005
ACM
14 years 5 months ago
2005
ACM
We show that every weighted connected graph G contains as a subgraph a spanning tree into which the edges of G can be embedded with average stretch O log2 n log log n . Moreover, w...
WADS
2005
Springer
13 years 10 months ago
2005
Springer
Motivated by optimization problems in sensor coverage, we formulate and study the Minimum-Area Spanning Tree (mast) problem: Given a set P of n points in the plane, find a spannin...
FSTTCS
2001
Springer
13 years 9 months ago
2001
Springer
Consider a directed graph G = (V, E) with n vertices and a root vertex r ∈ V . The DMDST problem for G is one of constructing a spanning tree rooted at r, whose maximal degree is...
PDCAT
2005
Springer
13 years 10 months ago
2005
Springer
We consider the practical NP-complete problem of finding a minimum weight spanning tree with both edge weights and inner nodes weights. We present two polynomial time algorithms ...