and line-transitive linear spaces.
Let be an -set. The problem of packing of pairs on with a minimum number of quadruples on is settled for and also for , , , , , where is any positive integer. In the other cases of methods have been presented for constructing the packings having a minimum known number of quadruples.
This work was partially supported by the Bulgarian National Science Fund under Contract No MM 1405. Part of the results were announced at the Fifth International Workshop on Optimal Codes and Related Topics (OCRT), White Lagoon, June 2007, BulgariaParallel class intersection matrices (PCIMs) have been defined and used in [6], [14], [15] for the classification of resolvable designs with several parameter sets. Resolutions which have orthogonal resolutions (RORs) have been classified in [19] for designs...