On \(2 -(v,4,\lambda)\)-Designs without Pair Intersections

Hans-Dietrich O.F.Gronau1, Jaroslav Nexetfil2
1University of Rostock Department of Mathematics Universitatsplate 1, Rostock Germany
2 Charles University Department of Applied Mathematics (KAM) Malostranske nam. 25, 11800 Prague, Czechoslovakia

Abstract