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The classification conjecture for unsplittable cyclic $(n_3)$ configurations
Classification conjecture. A cyclic $(n_3)$ configuration is unsplittable if and only if its Levi graph belongs to one of the following three infinite families:
Conjectureopenconfigurations graph-theory haar-graphsarXiv posted 2 days ago

The classification conjecture for unsplittable cyclic (n3)(n_3)(n3​) configurations