摘要：It is proved that if D be a 2|(v,k,1) design with G≤ Aut D block primitive then G does not have a Suzuki group Sz(q) as the socle.

摘要：The problem studied in this article is the directed Kirkman packing,the resolvable directed packing which requires all blocks to be of size three except that,each resolution class should contain either one block of size two(when v≡2(mod 3)) or one block of size four (when v≡1 (mod 3)).A directed Kirkman packing design DKPD(v) is a resolvable directed packing of a v-set by the maximum possible number of resolution classes of this *** article investigates the spectrum of DKPD(v) and it is found that it contains all positive integers v≥3 and v≠5,6.

摘要：Let G be a block-primitive automorphism group of a 2-(v,k,1) *** G is isomorphic to PSL (3,q) where q is odd,then G is also point-primitive.