activity
20142025
most citedSome locally Kneser graphs

1 citations · 3 across the 6 of their papers we have counts for

collaborators

6 papers

math.CO2025

Cliques in Paley graphs of square order and in Peisert graphs

Andries E. Brouwer, Sergey Goryainov, Leonid Shalaginov +1

We study maximal cliques in the collinearity graphs of Desarguesian nets, give some structural results and some numerical information. In particular, we show for Desarguesian nets…

math.CO2024

A construction of directed strongly regular graphs with parameters (63,11,8,1,2)

Andries E. Brouwer, Dean Crnković, Andrea Švob

In this paper, we prove the existence of directed strongly regular graphs with parameters . We construct a pair of nonisomorphic dsrg(63,11,8,1,2), where one is obta…

math.CO2023★ 1 cited

Some locally Kneser graphs

A. E. Brouwer

The Kneser graph is the graph on the -subsets of an -set, adjacent when disjoint. Clearly, is locally . Hall showed for that there ar…

math.CO2022

The equivalence of two inequalities for quasisymmetric designs

A. E. Brouwer

It has been an open problem whether Hobart's inequality on the parameters of a quasisymmetric 2-design is independent of earlier known restrictions. In this note we show that it is…

math.CO2017★ 1 cited

Counterexamples to conjectures about Subset Takeaway and counting linear extensions of a Boolean lattice

Andries E. Brouwer, J. Daniel Christensen

We develop an algorithm for efficiently computing recursively defined functions on posets. We illustrate this algorithm by disproving conjectures about the game Subset Takeaway (Ch…

math.CO2014★ 1 cited

Distance-regular graphs where the distance- graph has fewer distinct eigenvalues

A. E. Brouwer, M. A. Fiol

Let the Kneser graph of a distance-regular graph be the graph on the same vertex set as , where two vertices are adjacent when they have maximal distance in . We stud…