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» On perfectness of sums of graphs
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FOCS
2000
IEEE
14 years 1 months ago
On the Hardness of Graph Isomorphism
We show that the graph isomorphism problem is hard under DLOGTIME uniform AC0 many-one reductions for the complexity classes NL, PL (probabilistic logarithmic space) for every loga...
Jacobo Torán
CATS
2008
13 years 10 months ago
Well-covered Graphs and Greedoids
G is a well-covered graph provided all its maximal stable sets are of the same size (Plummer, 1970). S is a local maximum stable set of G, and we denote by S (G), if S is a maxim...
Vadim E. Levit, Eugen Mandrescu
COMBINATORICS
1999
64views more  COMBINATORICS 1999»
13 years 8 months ago
Orthogonal Colorings of Graphs
An orthogonal coloring of a graph G is a pair {c1, c2} of proper colorings of G, having the property that if two vertices are colored with the same color in c1, then they must hav...
Yair Caro, Raphael Yuster
SIBGRAPI
2006
IEEE
14 years 2 months ago
Single Triangle Strip and Loop on Manifolds with Boundaries
The single triangle-strip loop generation algorithm on a triangulated two-manifold presented by Gopi and Eppstein [4] is based on the guaranteed existence of a perfect matching in...
Pablo Diaz-Gutierrez, David Eppstein, M. Gopi
JCT
2007
93views more  JCT 2007»
13 years 8 months ago
Generating bricks
A brick is a 3-connected graph such that the graph obtained from it by deleting any two distinct vertices has a perfect matching. The importance of bricks stems from the fact that...
Serguei Norine, Robin Thomas