On pseudocyclic association schemes

Mikhail Muzychuk, Ilia Ponomarenko


The notion of a pseudocyclic association scheme is generalized to the non-commutative case. It is proved that any pseudocyclic scheme the rank of which is much more than the valency is the scheme of a Frobenius group and is uniquely determined up to isomorphism by its intersection number array. An immediate corollary of this result is that any scheme of prime degree, valency k and rank at least k4 is schurian.


pseudocyclic association schemes; Frobenius groups

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DOI: https://doi.org/10.26493/1855-3974.121.885

ISSN: 1855-3974

Issues from Vol 6, No 1 onward are partially supported by the Slovenian Research Agency from the Call for co-financing of scientific periodical publications