The Plane-Width of Graphs

Map vertices of a graph to (not necessarily distinct) points of the plane so that two adjacent vertices are mapped at least a unit distance apart. The plane-width of a graph is the minimum diameter of the image of the vertex set over all such mappings. We establish a relation between the plane-width of a graph and its chromatic number, and connect it to other well-known areas, including the circular chromatic number and the problem of packing unit discs in the plane.

• Type: Journal
• Year: 2008
• Where: CORR
• Authors: Marcin Kaminski, Paul Medvedev, Martin Milanic
• Keywords: Adjacent Vertices, Chromatic Number, CORR 2008, Education, Map Vertices