AbstractConstructions are given for auxiliary sets of matrices which have the previously unknown step parameter sequences (3,11,3), (2,2,8,11), (2,2,8,13), (2,2,9,11). As a consequence one obtains a projective Hjelmslev plane for each of the preceding four step parameter sequences
AbstractIn Galois’ last letter he found the values of the primes p for which the group PSL(2,p) acts...
Abstract. Recent work in the characterization of structured matrices in terms of the systems of poly...
AbstractIn this paper, we introduce Rédei type blocking sets in projective Hjelmslev planes over fin...
The following result is proved: for every projective plane gp there exists a projective Hjelmslev pl...
AbstractA projective Hjelmslev plane is called regular iff it admits an Abelian collineation group t...
Associated with every finite projective Hjelmslev plane is an invariant pair (t, r): t is the number...
Associated with every finite projective Hjelmslev plane is an invariant pair (t, r); t is the order ...
summary:A combinatorial characterization of finite projective planes using strongly canonical forms ...
AbstractThere are four known finite projective planes of order 9. This paper reports the result of a...
In this paper we construct sets of type (d1, d2) in the projective Hjelmslev plane. For computationa...
AbstractA Hjelmslev-quadrangle of level n is a rank 2 incidence structure having an ordinary general...
In this paper, we study on finite projective Hjelmslev planes M(Zq) coordinatized by Hjelmslev ring ...
AbstractThis note gives a new construction for PBIBD(2)'s that generalizes a construction of Hall's ...
AbstractWe define several types of transformations on the class of complete sets of pairwise orthogo...
We study the moments of orthogonal polynomial sequences (OPS) arising from tridiagonal matrices. We...
AbstractIn Galois’ last letter he found the values of the primes p for which the group PSL(2,p) acts...
Abstract. Recent work in the characterization of structured matrices in terms of the systems of poly...
AbstractIn this paper, we introduce Rédei type blocking sets in projective Hjelmslev planes over fin...
The following result is proved: for every projective plane gp there exists a projective Hjelmslev pl...
AbstractA projective Hjelmslev plane is called regular iff it admits an Abelian collineation group t...
Associated with every finite projective Hjelmslev plane is an invariant pair (t, r): t is the number...
Associated with every finite projective Hjelmslev plane is an invariant pair (t, r); t is the order ...
summary:A combinatorial characterization of finite projective planes using strongly canonical forms ...
AbstractThere are four known finite projective planes of order 9. This paper reports the result of a...
In this paper we construct sets of type (d1, d2) in the projective Hjelmslev plane. For computationa...
AbstractA Hjelmslev-quadrangle of level n is a rank 2 incidence structure having an ordinary general...
In this paper, we study on finite projective Hjelmslev planes M(Zq) coordinatized by Hjelmslev ring ...
AbstractThis note gives a new construction for PBIBD(2)'s that generalizes a construction of Hall's ...
AbstractWe define several types of transformations on the class of complete sets of pairwise orthogo...
We study the moments of orthogonal polynomial sequences (OPS) arising from tridiagonal matrices. We...
AbstractIn Galois’ last letter he found the values of the primes p for which the group PSL(2,p) acts...
Abstract. Recent work in the characterization of structured matrices in terms of the systems of poly...
AbstractIn this paper, we introduce Rédei type blocking sets in projective Hjelmslev planes over fin...
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