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Tricyclic Steiner Triple SystemsCalahan, Rebecca C., Gardner, Robert B., Tran, Quan D. 01 March 2010 (has links)
A Steiner triple system of order ν, denoted STS(ν), is said to be tricyclic if it admits an automorphism whose disjoint cyclic decomposition consists of three cycles. In this paper we give necessary and sufficient conditions for the existence of a tricyclic STS(ν) for several cases. We also pose conjectures concerning their existence in two remaining cases.
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