English

Sesqui-regular graphs with smallest eigenvalue at least $-3$

Combinatorics 2021-09-09 v1

Abstract

Koolen et al. showed that if a graph with smallest eigenvalue at least 3-3 has large minimal valency, then it is 22-integrable. In this paper, we will focus on the sesqui-regular graphs with smallest eigenvalue at least 3-3 and study their integrability.

Keywords

Cite

@article{arxiv.2109.03491,
  title  = {Sesqui-regular graphs with smallest eigenvalue at least $-3$},
  author = {Qianqian Yang and Brhane Gebremichel and Masood Ur Rehman and Jae Young Yang and Jack H. Koolen},
  journal= {arXiv preprint arXiv:2109.03491},
  year   = {2021}
}
R2 v1 2026-06-24T05:46:50.059Z