Enumeration of Seidel matrices
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In this paper Seidel matrices are studied, and their spectrum and several related algebraic properties are determined for order n≤13. Based on this Seidel matrices with exactly three distinct eigenvalues of order n≤23 are classified. One consequence of the computational results is that the maximum number of equiangular lines in R12 with common angle 1∕5 is exactly 20.
|Number of pages||16|
|Journal||European Journal of Combinatorics|
|Publication status||Published - 1 Mar 2018|
|MoE publication type||A1 Journal article-refereed|