| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8903631 | European Journal of Combinatorics | 2018 | 16 Pages |
Abstract
In this paper Seidel matrices are studied, and their spectrum and several related algebraic properties are determined for order nâ¤13. Based on this Seidel matrices with exactly three distinct eigenvalues of order nâ¤23 are classified. One consequence of the computational results is that the maximum number of equiangular lines in R12 with common angle 1â5 is exactly 20.
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
Authors
Ferenc SzöllÅsi, Patric R.J. ÃstergÃ¥rd,