Title
All partitions have small parts — Gallai–Ramsey numbers of bipartite graphs
Abstract
Gallai-colorings are edge-colored complete graphs in which there are no rainbow triangles. Within such colored complete graphs, we consider Ramsey-type questions, looking for specified monochromatic graphs. In this work, we consider monochromatic bipartite graphs since the numbers are known to grow more slowly than for non-bipartite graphs. The main result shows that it often suffices to consider only 3-colorings which have a special partition of the vertices. Using this tool, we find several sharp numbers and conjecture the sharp value for all bipartite graphs. In particular, we determine the Gallai–Ramsey numbers for many bipartite graphs with two vertices in one part and initiate the study of linear forests.
Year
DOI
Venue
2019
10.1016/j.dam.2018.06.031
Discrete Applied Mathematics
Keywords
Field
DocType
Gallai–Ramsey,Rainbow triangle,Bipartite graph
Discrete mathematics,Complete bipartite graph,Monochromatic color,Combinatorics,Vertex (geometry),Bipartite graph,Ramsey's theorem,Partition (number theory),Rainbow,Conjecture,Mathematics
Journal
Volume
ISSN
Citations 
254
0166-218X
1
PageRank 
References 
Authors
0.43
7
4
Name
Order
Citations
PageRank
Haibo Wu17613.61
Colton Magnant211329.08
Pouria Salehi Nowbandegani354.30
Suman Xia410.43