These are notes deriving from lecture courses given by the authors in 1973 at Westfield College, London. The lectures described the connection between the theor

These are notes deriving from lecture courses on the theory of t-designs and graph theory given by the authors in 1973 at Westfield College, London.

A self-contained account suited for a wide audience describing coding theory, combinatorial designs and their relations.

Combinatorial designs represent an important area of contemporary discrete mathematics closely related to such fields as finite geometries, regular graphs and m

X Köchendorffer, L.A. Kalu:lnin and their students in the 50s and 60s. Nowadays the most deeply developed is the theory of binary invariant relations and their