English

The first example of a simple $2-(81,6,2)$ design

Combinatorics 2023-07-19 v1

Abstract

We give the very first example of a simple 2(81,6,2)2-(81,6,2) design. Its points are the elements of the elementary abelian group of order 81 and each block is the union of two parallel lines of the 4-dimensional geometry over the field of order 3. Hence it is also additive.

Keywords

Cite

@article{arxiv.2307.08784,
  title  = {The first example of a simple $2-(81,6,2)$ design},
  author = {Anamari Nakic},
  journal= {arXiv preprint arXiv:2307.08784},
  year   = {2023}
}
R2 v1 2026-06-28T11:32:55.273Z