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Electronic Journal of Combinatorics
Article . 2003 . Peer-reviewed
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Article . 2003
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Article . 2003
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A Note on Graph Coloring Extensions and List-Colorings

A note on graph coloring extensions and list-colorings
Authors: Maria Axenovich;

A Note on Graph Coloring Extensions and List-Colorings

Abstract

Let $G$ be a graph with maximum degree $\Delta \geq 3$ not equal to $K_{\Delta +1}$ and let $P$ be a subset of vertices with pairwise distance, $d(P)$, between them at least $8$. Let each vertex $x$ be assigned a list of colors of size $\Delta$ if $x\in V\setminus P$ and $1$ if $x\in P$. We prove that it is possible to color $V(G)$ such that adjacent vertices receive different colors and each vertex has a color from its list. We show that $d(P)$ cannot be improved. This generalization of Brooks' theorem answers the following question of Albertson positively: If $G$ and $P$ are objects described above, can any coloring of $P$ in at most $\Delta$ colors be extended to a proper coloring of $G$ in at most $\Delta$ colors?

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Keywords

Coloring of graphs and hypergraphs, Brooks' theorem

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Average
Top 10%
Average
gold