25 search results - page 1 / 5 » The fractional chromatic number of Zykov products of graphs |
APPML
2011
13 years 6 months ago
2011
Zykov designed one of the oldest known family of triangle-free graphs with arbitrarily high chromatic number. We determine the fractional chromatic number of the Zykov product of ...
DM
1998
13 years 10 months ago
1998
DM
2008
13 years 11 months ago
2008
In this paper, the total chromatic number and fractional total chromatic number of circulant graphs are studied. For cubic circulant graphs we give upper bounds on the fractional ...
MP
2010
13 years 9 months ago
2010
The Lov´asz theta number of a graph G can be viewed as a semidefinite programming relaxation of the stability number of G. It has recently been shown that a copositive strengthe...
ARSCOM
2004
13 years 10 months ago
2004
The concept of circular chromatic number of graphs was introduced by Vince(1988). In this paper we define circular chromatic number of uniform hypergraphs and study their basic pr...