79 search results - page 4 / 16 » Approximating the minimum hub cover problem on planar graphs |
WG
2007
Springer
15 years 3 months ago
2007
Springer
A cycle cover of a graph is a set of cycles such that every vertex is part of exactly one cycle. An L-cycle cover is a cycle cover in which the length of every cycle is in the set ...
WDAG
2009
Springer
15 years 4 months ago
2009
Springer
We present a distributed 2-approximation algorithm for the minimum vertex cover problem. The algorithm is deterministic, and it runs in (∆ + 1)2 synchronous communication rounds,...
CORR
2010
Springer
14 years 9 months ago
2010
Springer
Given a directed graph G with non negative cost on the arcs, a directed tree cover of G is a directed tree such that either head or tail (or both of them) of every arc in G is touc...
JAL
2006
14 years 9 months ago
2006
: We consider a variety of vehicle routing problems. The input to a problem consists of a graph G = (N, E) and edge lengths l(e) e E. Customers located at the vertices have to be ...
APPROX
2008
Springer
14 years 11 months ago
2008
Springer
We consider the variant of the minimum vertex cover problem in which we require that the cover induces a connected subgraph. We give new approximation results for this problem in d...