On the Non-Existence of Certain M.D.S. Codes and Projective Planes.
On the Orbits of Collineation Groups.
On the orbits of Singer groups and their subgroups.
On the rank of random subsets of finite affine geometry
The aim of the paper is to give an effective formula for the calculation of the probability that a random subset of an affine geometry AG(r-1,q) has rank r. Tables for the probabilities are given for small ranks. The expected time to the first moment at which a random subset of an affine geometry achieves the rank r is derived.
On the size of maximal caps in .
On the smallest minimal blocking sets in projective space generating the whole space.
On the spectrum of resolvable orthogonal arrays invariant under the Klein group K4.
On the Structure of Finite Collineation Groups Containing Symmetries of Generalized Quadrangles.
On the theorems of Drake and Lenz.
On the upper and lower chromatic numbers of BSQSs(16).
On Veldkamp lines.
Optimal four-dimensional codes over .