A matrix equation for association schemes

L. Chihara, D. Stanton

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Let[Figure not available: see fulltext.] be a self-dual P-polynomial association scheme. Then there are at most 12 diagonal matrices T such that (PT)3 =I. Moreover, all of the solutions for the classical infinite families of such schemes (including the Hamming scheme) are classified.

Original languageEnglish (US)
Pages (from-to)103-108
Number of pages6
JournalGraphs and Combinatorics
Issue number2
StatePublished - Jun 1995


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