31 search results - page 3 / 7 » A Polynomial-Time Approximation Scheme for Weighted Planar G... |
SODA
2004
ACM
14 years 11 months ago
2004
ACM
Given an undirected graph, finding either a minimum 2-edge-connected spanning subgraph or a minimum 2vertex-connected (biconnected) spanning subgraph is MaxSNP-hard. We show that ...
ESA
2005
Springer
15 years 3 months ago
2005
Springer
Abstract. We present new approximation schemes for various classical problems of finding the minimum-weight spanning subgraph in edge-weighted undirected planar graphs that are re...
STOC
2010
ACM
15 years 2 months ago
2010
ACM
We give the first polynomial-time approximation scheme (PTAS) for the Steiner forest problem on planar graphs and, more generally, on graphs of bounded genus. As a first step, w...
ESA
2006
Springer
15 years 1 months ago
2006
Springer
In this paper we introduce and study cooperative variants of the Traveling Salesperson Problem. In these problems a salesperson has to make deliveries to customers who are willing ...
FOCS
2009
IEEE
15 years 4 months ago
2009
IEEE
— We show that for every fixed k, there is a linear time algorithm that decides whether or not a given graph has a vertex set X of order at most k such that G − X is planar (w...