Sciweavers

14 search results - page 1 / 3
» Detecting Holes and Antiholes in Graphs
Sort
View
ALGORITHMICA
2007
86views more  ALGORITHMICA 2007»
13 years 5 months ago
Detecting Holes and Antiholes in Graphs
In this paper we study the problems of detecting holes and antiholes in general undirected graphs, and we present algorithms for these problems. For an input graph G on n vertices ...
Stavros D. Nikolopoulos, Leonidas Palios
JCT
2006
79views more  JCT 2006»
13 years 4 months ago
A class of perfectly contractile graphs
We consider the class A of graphs that contain no odd hole, no antihole, and no "prism" (a graph consisting of two disjoint triangles with three disjoint paths between th...
Frédéric Maffray, Nicolas Trotignon
SIAMDM
2008
143views more  SIAMDM 2008»
13 years 4 months ago
Coloring Bull-Free Perfectly Contractile Graphs
We consider the class of graphs that contain no bull, no odd hole, and no antihole of length at least five. We present a new algorithm that colors optimally the vertices of every g...
Benjamin Lévêque, Frédé...
LCN
2007
IEEE
13 years 11 months ago
Detecting Black Hole Attacks in Tactical MANETs using Topology Graphs
Abstract— Black Hole Attacks are a serious threat to communication in tactical MANETs. In this work we present TOGBAD a new centralised approach, using topology graphs to identif...
Elmar Gerhards-Padilla, Nils Aschenbruck, Peter Ma...
DAM
2008
88views more  DAM 2008»
13 years 4 months ago
On the asymmetric representatives formulation for the vertex coloring problem
We consider the vertex coloring problem, which may be stated as the problem of minimizing the number of labels that can be assigned to the vertices of a graph G such that each ver...
Manoel B. Campêlo, Victor A. Campos, Ricardo...