most citedOrthogonal representations of Steiner triple system incidence graphs

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math.CO2017★ 1 cited

Orthogonal representations of Steiner triple system incidence graphs

Louis Deaett, H. Tracy Hall

The Heawood graph is the point-block incidence graph of the Fano plane (the unique Steiner triple system of order 7). We show that the minimum semidefinite rank of this graph is 10…