A transversal design
of order , block size , and index is a triple
(, , ) such that
- 1. is a set of elements,
- 2. is a partition of into classes, each of size (the ``groups''),
- 3. is a collection of -subsets of (the ``blocks''), and
- 4. Every unordered pair of elements from is contained in either exactly one group or in exactly
blocks, but not both.
Colbourn, C. J. and Dinitz, J. H. (Eds.) CRC Handbook of Combinatorial Designs.
Boca Raton, FL: CRC Press, p. 112, 1996.
© 1996-9 Eric W. Weisstein