On Ternary Rings of Derivable Planes.
On the Collineation Groups of Derived Semifield Planes.
On the construction of cyclic quadruple systems
On the functional equation ... (Short Communication).
On the graphs of Hoffman-Singleton and Higman-Sims.
On the Group of Transformations of Constructible Euclidean Planes with Preserve a Single Distance.
On the Haagerup inequality and groups acting on -buildings
Let be a group endowed with a length function , and let be a linear subspace of . We say that satisfies the Haagerup inequality if there exists constants such that, for any , the convolutor norm of on is dominated by times the norm of . We show that, for , the Haagerup inequality can be expressed in terms of decay of random walks associated with finitely supported symmetric probability measures on . If is a word length function on a finitely generated group , we show that,...
On the history of generalized quadrangles.
On the linearity of higher-dimensional blocking sets.
On the loop inequality for euclidean buildings
We give an estimate for the number of closed loops of given length in the 1-skeleton of a thick euclidean building. This kind of estimate can be used to prove the (RD) property for the subspace of radial functions on groups, as shown in the paper by A. Valette [same issue].
On the non-existence of certain hyperovals in dual André planes of order 2.
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.