Abstract
A graph is found which is 4-chromatic, has girth 5, and can be obtained by taking a set S of points in the plane and joining two of the points whenever their distance is 1. The points in S are not found explicitly, but their existence is demonstrated by use of a computer.
| Original language | English |
|---|---|
| Pages (from-to) | 1-8 |
| Number of pages | 8 |
| Journal | Journal of the Australian Mathematical Society |
| Volume | 28 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1979 |
| Externally published | Yes |