On resolvable group-divisible designs with block size 3. (English) Zbl 0621.05004
Resolvable group-divisible designs with blocks of size 3 have u groups of size g meeting the necessary conditions \(ug=0\) (mod 3) and \((u-1)g=0\) (mod 2). Existence for resolvable group-divisible designs of type \(g^ u\) and block size 3 is settled with a few exceptions. The essential ingredient is the use of Kirkman frames, which are essentially Kirkman triple systems with holes.
Reviewer: C.J.Colbourn
MSC:
05B05 | Combinatorial aspects of block designs |