Augmenting the Delsarte bound: A forbidden interval for the order of maximal cliques in strongly regular graphs

There Does Not Exist a Strongly Regular Graph with Parameters $(1911,270,105,27)$

“…Using Lemma 1, Greaves et al [6] derived a method restricting the order of maximal cliques in a strongly regular graph. They showed the following result.…”

“…Lemma 2 (cf. [6,Lemma 3.7]). Let G be a strongly regular graph with parameters (n, k, λ, µ) having smallest eigenvalue −m.…”