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Mathematics of Computation

ISSN 1088-6842(online) ISSN 0025-5718(print)

 

 

Cyclic large sets of Steiner triple systems of order $ 15$


Author: Kevin T. Phelps
Journal: Math. Comp. 55 (1990), 821-824, S1
MSC: Primary 05B07
DOI: https://doi.org/10.1090/S0025-5718-1990-1035942-1
MathSciNet review: 1035942
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Abstract: We examine a class of large sets of Steiner triple systems of order 15 having an automorphism consisting of two fixed points and a 13-cycle. We exhibit all members of this class: there are 256 nonisomorphic systems. We examined these members for initial configurations which could lead to a large set of Steiner quadruple systems of order 16 and established that no large set exists having three fixed points and a 13-cycle.


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DOI: https://doi.org/10.1090/S0025-5718-1990-1035942-1
Article copyright: © Copyright 1990 American Mathematical Society