International Journal of Mathematics and Mathematical Sciences
Volume 3 (1980), Issue 1, Pages 169-175
doi:10.1155/S0161171280000105
On the block structure of PBIB designs
M.L. Chandak
Department of Mathematics and Statistics, J.N. Agricultural University, Jabalpur-4, M.P., India
Abstract
Let {θ,θ1,…,θn1} denote the set having any treatment θ and its n1 first associates in a PBIB design with m(≥2) associate classes. A theorem on distribution of the elements of this set among the blocks of the block design is proved and results related to certain well known association schemes of three associate classes are obtained.