306 search results - page 27 / 62 » Computing the Girth of a Planar Graph |
FCT
2009
Springer
14 years 2 months ago
2009
Springer
We study the empire colouring problem (as defined by Percy Heawood in 1890) for maps whose dual planar graph is a tree, with empires formed by exactly r countries. We prove that, ...
DAM
2011
13 years 2 months ago
2011
Given a planar graph G, we consider drawings of G in the plane where edges are represented by straight line segments (which possibly intersect). Such a drawing is specified by an ...
IWPEC
2009
Springer
14 years 2 months ago
2009
Springer
An induced matching in graph G is a matching which is an induced subgraph of G. Clearly, among two vertices with the same neighborhood (called twins) at most one is matched in any...
ALGORITHMICA
2006
13 years 7 months ago
2006
We consider the problem of coloring a planar graph with the minimum number of colors so that each color class avoids one or more forbidden graphs as subgraphs. We perform a detail...
SIBGRAPI
2005
IEEE
14 years 1 months ago
2005
IEEE
Graph sub-isomorphism is a very common approach to solving pattern search problems, but this is a NP-complete problem. This way, it is necessary to invest in research of approxima...