Title
Partitioning sparse graphs into an independent set and a graph with bounded size components
Abstract
We study the problem of partitioning the vertex set of a given graph so that each part induces a graph with components of bounded order; we are also interested in restricting these components to be paths. In particular, we say a graph G admits an (I,Ok)-partition if its vertex set can be partitioned into an independent set and a set that induces a graph with components of order at most k. We prove that every graph G with mad(G)<52 admits an (I,O3)-partition. This implies that every planar graph with girth at least 10 can be partitioned into an independent set and a set that induces a graph whose components are paths of order at most 3. We also prove that every graph G with mad(G)<8k3k+1=831−13k+1 admits an (I,Ok)-partition. This implies that every planar graph with girth at least 9 can be partitioned into an independent set and a set that induces a graph whose components have order at most 9.
Year
DOI
Venue
2020
10.1016/j.disc.2020.111921
Discrete Mathematics
Keywords
DocType
Volume
Planar graphs,Vertex partition,Bounded component,Discharging method,Improper coloring,Islands
Journal
343
Issue
ISSN
Citations 
8
0012-365X
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Ilkyoo Choi100.34
François Dross2105.83
Pascal Ochem325836.91