arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.03100math.CO
收藏

The EKR-module property of pseudo-Paley graphs of square order

Shamil Asgarli, Sergey Goryainov, Huiqiu Lin, Chi Hoi Yip

英文摘要:

We prove that a family of pseudo-Paley graphs of square order obtained from unions of cyclotomic classes satisfies the Erdős-Ko-Rado (EKR) module property, in a sense that the characteristic vector of each maximum clique is a linear combination of characteristic vectors of canonical cliques. This extends the EKR-module property of Paley graphs of square order and solves a problem proposed by Godsil and Meagher. Different from previous works, which heavily rely on tools from number theory, our approach is purely combinatorial in nature. The main strategy is to view these graphs as block graphs of orthogonal arrays, which is of independent interest.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑