2 papers
math.CO2026
A stronger upper bound on the D-chromatic index
Lin Tian, Runze Wang
For a graph , a proper edge coloring of is called a D-coloring if every diamond subgraph of is rainbow. Let be the D-chromatic index of , which is the small…
math.CO2026
List coloring -free planar graphs with a sparse matching of restricted lists
Stephen G. Hartke, Yupei Li, Joseph Pappe +3
A graph is -choosable if it has a proper coloring for every -list assignment. While every -free planar graph is -choosable, some of them are not -choosable, as…