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The Diameters Graph of the Root SystemE8is Uniquely Geometrisable

✍ Scribed by Pratima Panigrahi


Book ID
110222097
Publisher
Springer
Year
1999
Tongue
English
Weight
137 KB
Volume
78
Category
Article
ISSN
0046-5755

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πŸ“œ SIMILAR VOLUMES


The Johnson graph J(d, r) is unique if (
✍ Paul Terwilliger πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 English βš– 740 KB

We use the classical Root Systems to show the Johnson graph J (d, r) (2 <~ 2d ~ r < oo) is the unique distance-regular graph with its intersection numbers when (d, r):~ (2, 8). Since this exceptional case has been dealt with by Chang [6] this completes the characterization problem for the Johnson gr