Title
On 11-improper 22-coloring of sparse graphs.
Abstract
A graph G is (1,1)-colorable if its vertices can be partitioned into subsets V1 and V2 such that every vertex in G[Vi] has degree at most 1 for each i∈{1,2}. We prove that every graph with maximum average degree at most 145 is (1,1)-colorable. In particular, it follows that every planar graph with girth at least 7 is (1,1)-colorable. On the other hand, we construct graphs with maximum average degree arbitrarily close to 145 (from above) that are not (1,1)-colorable.
Year
DOI
Venue
2013
10.1016/j.disc.2013.07.014
Discrete Mathematics
Keywords
DocType
Volume
Improper coloring,Sparse graph,Maximum average degree,Planar graph
Journal
313
Issue
ISSN
Citations 
22
0012-365X
15
PageRank 
References 
Authors
0.89
8
3
Name
Order
Citations
PageRank
Oleg V. Borodin163967.41
Alexandr V. Kostochka268289.87
Matthew Yancey3738.59