4171 search results - page 13 / 835 » Choice numbers of graphs |
JGT
2011
13 years 3 months ago
2011
JGT
2007
13 years 8 months ago
2007
Let G be a simple graph with order n and minimum degree at least two. In this paper, we prove that if every odd branch-bond in G has an edge-branch, then its line graph has a 2-fa...
DM
2010
13 years 8 months ago
2010
A set of vertices D of a graph G is geodetic if every vertex of G lies on a shortest path between two not necessarily distinct vertices in D. The geodetic number of G is the minimu...
GC
2010
Springer
13 years 7 months ago
2010
Springer
The b-chromatic number of a graph G is the largest integer k such that G admits a proper k-coloring in which every color class contains at least one vertex adjacent to some vertex...
DM
2008
13 years 8 months ago
2008
We prove that a K4-free graph G of order n, size m and maximum degree at most three has an independent set of cardinality at least 1 7 (4n - m - - tr) where counts the number of c...