The Lemmens-Seidel conjecture and forbidden subgraphs

Autor:	Cao, Meng-Yue, H, Jack, Koolen, Lin, Yen-Chi Roger, Yu, Wei-Hsuan
Rok vydání:	2020
Předmět:	Mathematics - Combinatorics Primary 05C50 52C10 secondary 05C22
Druh dokumentu:	Working Paper
Popis:	In this paper we show that the conjecture of Lemmens and Seidel of 1973 for systems of equiangular lines with common angle $\arccos (1/5)$ is true. Our main tool is forbidden subgraphs for smallest Seidel eigenvalue $-5$. Comment: 28 pages, 2 tables, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2003.07511 Zobrazit plný text záznamu View this record from Arxiv