Euclidean Jordan Algebras and Generalized Krein parameters of a strongly regular graph

Luis Vieira

Let $\tau$ be a strongly $(n,p;a,c)$ regular graph,such that $0<c<p<n-1,$ $A$ his matrix of adjacency and let ${\mathcal{V}}_n$ be the Euclidean space spanned by the powers of $A$ over t…