Graphs with two main and two plain eigenvalues
Combinatorics
2016-12-05 v1
Abstract
In this paper, we introduce the concepts of the plain eigenvalue, the main-plain index and the refined spectrum of graphs. We focus on the graphs with two main and two plain eigenvalues and give some characterizations of them.
Keywords
Cite
@article{arxiv.1612.00589,
title = {Graphs with two main and two plain eigenvalues},
author = {Sakander Hayat and Muhammad Javaid and Jack H. Koolen},
journal= {arXiv preprint arXiv:1612.00589},
year = {2016}
}
Comments
9 pages