Separating rank 3 graphs
| Autor: | Bamberg, John, Giudici, Michael, Lansdown, Jesse, Royle, Gordon F. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We classify, up to some notoriously hard cases, the rank 3 graphs which fail to meet either the Delsarte or the Hoffman bound. As a consequence, we resolve the question of separation for the corresponding rank 3 primitive groups and give new examples of synchronising, but not $\mathbb{Q}\mathrm{I}$, groups of affine type. Comment: Added acknowledgements and noted the third author's change of institution |
| Databáze: | arXiv |
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