62 search results - page 4 / 13 » Induced trees in triangle-free graphs |
DAM
2010
13 years 7 months ago
2010
For all integers k 3, we give an O(n4 ) time algorithm for the problem whose instance is a graph G of girth at least k together with k vertices and whose question is "Does G...
COMBINATORICS
2000
13 years 7 months ago
2000
In this article, Temperley's bijection between spanning trees of the square grid on the one hand, and perfect matchings (also known as dimer coverings) of the square grid on ...
JGT
2006
13 years 7 months ago
2006
Abstract: A k-tree is a chordal graph with no (k + 2)-clique. An -treepartition of a graph G is a vertex partition of G into `bags,' such that contracting each bag to a single...
WG
1998
Springer
13 years 11 months ago
1998
Springer
Hierarchical decompositions of graphs are interesting for algorithmic purposes. There are several types of hierarchical decompositions. Tree decompositions are the best known ones....
COMBINATORICS
2004
13 years 7 months ago
2004
The set of all orientations of a planar graph with prescribed outdegrees carries the structure of a distributive lattice. This general theorem is proven in the first part of the p...