Sciweavers

1632 search results - page 1 / 327
» On special numberings of hypergraphs
Sort
View
DM
2000
82views more  DM 2000»
15 years 7 days ago
On special numberings of hypergraphs
Generalizing a result of Bodendiek and Burosch on graphs it is proved that every vertex-simple
Günter Schaar
83
Voted
IPL
2006
105views more  IPL 2006»
15 years 12 days ago
Finding and counting cliques and independent sets in r-uniform hypergraphs
We present a matrix multiplication based algorithm for counting the number of (induced) occurrences of a fixed r-uniform hypergraph in a larger hypergraph. In many cases, the runn...
Raphael Yuster
116
Voted
ARSCOM
2004
175views more  ARSCOM 2004»
15 years 8 days ago
Circular Chromatic Number of Hypergraphs
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...
Changiz Eslahchi, Arash Rafiey
96
Voted
COMBINATORICS
2000
124views more  COMBINATORICS 2000»
15 years 7 days ago
Colouring Planar Mixed Hypergraphs
A mixed hypergraph is a triple H = (V, C, D) where V is the vertex set and C and D are families of subsets of V , the C-edges and D-edges, respectively. A k-colouring of H is a ma...
André Kündgen, Eric Mendelsohn, Vitaly...
114
Voted
ARSCOM
2006
132views more  ARSCOM 2006»
15 years 14 days ago
C-Perfect K-Uniform Hypergraphs
In this paper we define the concept of clique number of uniform hypergraph and study its relationship with circular chromatic number and clique number. For every positive integer ...
Changiz Eslahchi, Arash Rafiey