Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4650602 | Discrete Mathematics | 2008 | 17 Pages |
Abstract
For any graph G, the k-improper chromatic number χk(G)χk(G) is the smallest number of colours used in a colouring of G such that each colour class induces a subgraph of maximum degree k . We investigate χkχk for unit disk graphs and random unit disk graphs to generalise results of McDiarmid and Reed [Colouring proximity graphs in the plane, Discrete Math. 199(1–3) (1999) 123–137], McDiarmid [Random channel assignment in the plane, Random Structures Algorithms 22(2) (2003) 187–212], and McDiarmid and Müller [On the chromatic number of random geometric graphs, submitted for publication].
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
Authors
Ross J. Kang, Tobias Müller, Jean-Sébastien Sereni,