871 search results - page 75 / 175 » The vertex-cover polynomial of a graph |
WALCOM
2010
IEEE
15 years 4 months ago
2010
IEEE
Given a simple graph G, a harmonious coloring of G is a proper vertex coloring such that each pair of colors appears together on at most one edge. The harmonious chromatic number i...
105
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ICALP
2007
Springer
15 years 4 months ago
2007
Springer
Abstract. We deal with two intimately related subjects: quasi-randomness and regular partitions. The purpose of the concept of quasi-randomness is to measure how much a given graph...
GD
2005
Springer
15 years 3 months ago
2005
Springer
A clustered graph has its vertices grouped into clusters in a hierarchical way via subset inclusion, thereby imposing a tree structure on the clustering relationship. The c-planari...
JGT
2008
14 years 9 months ago
2008
A homomorphism from an oriented graph G to an oriented graph H is a mapping from the set of vertices of G to the set of vertices of H such that ----(u)(v) is an arc in H whenever...
JGT
2007
14 years 9 months ago
2007
It is known that for every integer k ≥ 4, each k-map graph with n vertices has at most kn − 2k edges. Previously, it was open whether this bound is tight or not. We show that ...