We establish the connections between finite projective planes admitting a collineation group of Lenzâ€“Barlotti type I.3 or I.4, partially transitive planes of type (3) in the sense of Hughes, andâ€¦ (More)

The hulls of codes from the row span over Fp, for any prime p, of incidence matrices of connected k-regular graphs are examined, and the dimension of the hull is given in terms of the dimension ofâ€¦ (More)

We examine the p-ary codes from incidence matrices of Paley graphs P (q) where q â‰¡ 1 (mod 4) is a prime power, and show that the codes are [ q(qâˆ’1) 4 , q âˆ’ 1, qâˆ’1 2 ]2 or [ q(qâˆ’1) 4 , q, qâˆ’1 2 ]p forâ€¦ (More)

An Af*.Afgeometry of order 4 is a residually connected rank three geometry where planes are dual affine planes and stars of points are affine planes of order 4. We prove that such a geometry isâ€¦ (More)

Motivated by the Ahrensâ€“Szekeres Quadrangles, we shall present a variation of the 4-gonal family method of construction introduced by Kantor in 1980. The relation between generalized quadrangles ofâ€¦ (More)