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An infinite family of intransitive directed strongly regular graphs with rank 6 Weisfeiler--Leman closure

Gyürki, Štefan
arXiv (All) · Papers
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combinatorics
We construct an infinite family of directed strongly regular graphs (DSRGs) with intransitive full automorphism groups whose Weisfeiler--Leman closure are association schemes of rank 6. This is the smallest possible rank for an association scheme admitting a proper DSRG merging. We also exhibit rigi
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