Quaderni Elettronici del Seminario di Geometria Combinatoria
18E (Marzo 2005), 1--27
Università degli Studi di Roma "La Sapienza" - Dipartimento di Matematica
What association schemes are: definitions and examples, including distance-regular graphs, Hamming schemes, and schemes based on Abelian groups. Creating new association schemes as products of two smaller schemes.
The Bose-Mesner algebra, including the character table. Applications to parameters of strongly regular graphs.
Partially balanced incomplete block designs, including the statistician's view of what a block design is and topics such as the variance of the estimator of the difference between two treatments.
Orthogonal block structures, including those based on (a) groups and subgroups (b) partially ordered sets.
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