English

The small Kakeya sets in $T^{*}_{2}(\mathcal{C})$, $\mathcal{C}$ a conic

Combinatorics 2016-01-15 v1

Abstract

A Kakeya set in the linear representation T2(C)T^{*}_{2}(\mathcal{C}), C\mathcal{C} a non-singular conic, is the point set covered by a set of q+1q+1 lines, one through each point of C\mathcal{C}. In this article we classify the small Kakeya sets in T2(C)T^{*}_{2}(\mathcal{C}). The smallest Kakeya sets have size 3q2+2q4\left\lfloor\frac{3q^{2}+2q}{4}\right\rfloor, and all Kakeya sets with weight less than 3(q21)4+q\left\lfloor\frac{3(q^{2}-1)}{4}\right\rfloor+q are classified: there are approximately q2\sqrt{\frac{q}{2}} types.

Cite

@article{arxiv.1601.03539,
  title  = {The small Kakeya sets in $T^{*}_{2}(\mathcal{C})$, $\mathcal{C}$ a conic},
  author = {Maarten De Boeck},
  journal= {arXiv preprint arXiv:1601.03539},
  year   = {2016}
}
R2 v1 2026-06-22T12:29:19.041Z