Title
Induced subgraphs of graphs with large chromatic number. V. Chandeliers and strings
Abstract
It is known that every graph of sufficiently large chromatic number and bounded clique number contains, as an induced subgraph, a subdivision of any fixed forest, and a subdivision of any fixed cycle. Equivalently, every forest is pervasive, and K3 is pervasive, in the class of all graphs, where we say a graph H is “pervasive” (in some class of graphs) if for all ℓ≥1, every graph in the class of bounded clique number and sufficiently large chromatic number has an induced subgraph that is a subdivision of H, in which every edge of H is replaced by a path of at least ℓ edges.
Year
DOI
Venue
2021
10.1016/j.jctb.2021.05.001
Journal of Combinatorial Theory, Series B
Keywords
DocType
Volume
Colouring,χ-bounded,String graph
Journal
150
ISSN
Citations 
PageRank 
0095-8956
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Maria Chudnovsky139046.13
Alex Scott225140.93
Paul D. Seymour300.68