Add to ORKGIn 2013, van Dam, Martin and Muzychuk constructed a cometric $Q-$ antipodal $4-$class association scheme from a GQ of order $(t^2,t)$, $t$ odd, which have a hemisystem. In this paper we characterize this scheme by its Krein array. The techniques which are used involve the triple intersection numbers introduced by Coolsaet and Juri\v{s}i\'c
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The combinatorial objects known as association schemes arise in group theory, extremal graph theory,...
Penttila and Williford constructed a 4-class association scheme from a generalized quadrangle with a...
Penttila and Williford constructed a 4-class association scheme from a generalized quadrangle with a...
Penttila and Williford constructed a 4-class association scheme from a generalized quadrangle with a...
AbstractThere is a new method of constructing generalized quadrangles (GQs) which is based on coveri...
AbstractWe show the existence of a four-class association scheme defined on the unordered pairs of d...
AbstractThere is a new method of constructing generalized quadrangles (GQs) which is based on coveri...
AbstractWe show the existence of a four-class association scheme defined on the unordered pairs of d...
AbstractIn this paper, we construct the first known infinite family of primitive Q-polynomial scheme...
Inspired by some intriguing examples, we study uniform association schemes and uniform coherent cong...
AbstractMotivated by the Ahrens–Szekeres Quadrangles, we shall present a variation of the 4-gonal fa...
Inspired by some intriguing examples, we study uniform association schemes and uniform coherent conf...
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The combinatorial objects known as association schemes arise in group theory, extremal graph theory,...
Penttila and Williford constructed a 4-class association scheme from a generalized quadrangle with a...
Penttila and Williford constructed a 4-class association scheme from a generalized quadrangle with a...
Penttila and Williford constructed a 4-class association scheme from a generalized quadrangle with a...
AbstractThere is a new method of constructing generalized quadrangles (GQs) which is based on coveri...
AbstractWe show the existence of a four-class association scheme defined on the unordered pairs of d...
AbstractThere is a new method of constructing generalized quadrangles (GQs) which is based on coveri...
AbstractWe show the existence of a four-class association scheme defined on the unordered pairs of d...
AbstractIn this paper, we construct the first known infinite family of primitive Q-polynomial scheme...
Inspired by some intriguing examples, we study uniform association schemes and uniform coherent cong...
AbstractMotivated by the Ahrens–Szekeres Quadrangles, we shall present a variation of the 4-gonal fa...
Inspired by some intriguing examples, we study uniform association schemes and uniform coherent conf...
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The concept of a hemisystem of a generalised quadrangle has its roots in the work of B. Segre, and t...
The combinatorial objects known as association schemes arise in group theory, extremal graph theory,...