File:List-coloring-K-3-27.svg
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Summary
| Description |
English: An instance of the list coloring problem, on the complete bipartite graph K3,27, with three colors per vertex. No matter which colors are chosen for the three central vertices, one of the 27 outer vertices will have all of its three colors used by its three neighbors, preventing it from being colored. Therefore, the list chromatic number of K3,27 is at least four. |
| Date | |
| Source | Own work |
| Author | David Eppstein |
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 22:14, 21 February 2012 | | 778 × 780 (17 KB) | David Eppstein | {{Information |Description ={{en|1=An instance of the list coloring problem, on the complete bipartite graph ''K''<sub>3,27</sub>, with three colors per vertex. No matter which colors are chosen fo |
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