The Lemmens-Seidel conjecture and forbidden subgraphs
Combinatorics
2020-03-18 v1
Abstract
In this paper we show that the conjecture of Lemmens and Seidel of 1973 for systems of equiangular lines with common angle is true. Our main tool is forbidden subgraphs for smallest Seidel eigenvalue .
Keywords
Cite
@article{arxiv.2003.07511,
title = {The Lemmens-Seidel conjecture and forbidden subgraphs},
author = {Meng-Yue Cao and Jack H and Koolen and Yen-Chi Roger Lin and Wei-Hsuan Yu},
journal= {arXiv preprint arXiv:2003.07511},
year = {2020}
}
Comments
28 pages, 2 tables, 6 figures