Up until the last installment, we looked at the algebraic structure of association schemes, namely the commutativity of adjacency algebras and the system of eigenvalues. This time, let's apply this ...

Last time, we confirmed the important property that the adjacency algebra (Bose-Mesner algebra) of an association scheme is "commutative". $${\displaystyle A_i A_j = A_j A_i}$$ This time, we will step ...

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