266 search results - page 6 / 54 » Chromatic Ramsey numbers |
ENDM
2010
13 years 7 months ago
2010
A main result of combinatorial optimization is that clique and chromatic number of a perfect graph are computable in polynomial time (Gr
JGT
2006
13 years 7 months ago
2006
Following [1], we investigate the problem of covering a graph G with induced subgraphs G1, . . . , Gk of possibly smaller chromatic number, but such that for every vertex u of G, ...
JGT
2006
13 years 7 months ago
2006
This paper studies the circular chromatic number of a class of circular partitionable graphs. We prove that an infinite family of circular partitionable graphs have
CORR
2010
Springer
13 years 7 months ago
2010
Springer
The packing chromatic number (G) of a graph G is the least integer k for which there exists a mapping f from V (G) to {1, 2, . . ., k} such that any two vertices of color i
RSA
1998
13 years 7 months ago
1998
: For a pair of integers 1F␥-r, the ␥-chromatic number of an r-uniform Ž .hypergraph Hs V, E is the minimal k, for which there exists a partition of V into subsets < <T ...