On graph spectra for finite upper half planes over Galois rings
We introduce the finite upper half planes over Galois rings and we investigate the structure of the association schemes attached to the planes. As a consequence, it is shown that the graphs obtained from the upper half planes are not Ramanujan except for few exceptions.
Authors
- Makoto Tagami
Institutions
- Kyushu Institute of Technology (JP)
Publication Details
- Journal
- International Journal of Mathematics for Industry
- Published
- 2025-12-01
- DOI
- https://doi.org/10.1142/s2661335225500169
- Primary Topic
- Finite Group Theory Research
- Type
- article
- Field-Weighted Citation Impact
- 0.00