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math.CO2022
Separating rank 3 graphs
John Bamberg, Michael Giudici, Jesse Lansdown +1
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 separati…
math.CO2022
A census of small Schurian association schemes
Jesse Lansdown
Using the classification of transitive groups of degree , for , we classify the Schurian association schemes of order , and as a consequence, the…