Eigenvalues of graphs with threefold symmetry
β Scribed by Susan S. D'Amato
- Book ID
- 104807053
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 359 KB
- Volume
- 53
- Category
- Article
- ISSN
- 1432-2234
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Let ,~(ll) be an eigenspace of a finite graph G, with dimension m and codimension t > I. It is shown that if It ~ {-1,0} then m ~< ~ (t -l)(t + 4). A necessary and sufficient condition for It to be a multiple eigenvalue of G is established, and used to construct examples from iratersecting fami
We study nonregular graphs with three eigenvalues. We determine all the ones with least eigenvalue &2, and give new infinite families of examples. 1998 Academic Press ## 1. Introduction In this paper we look at the graphs that are generalizations of strongly regular graphs (cf. [3, 6, 16]) by drop