Infinite families of 2- and 3-designs wi
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Shiro Iwasaki
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Article
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1997
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John Wiley and Sons
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English
β 211 KB
Let p be an odd prime number such that p -1 = 2 e m for some odd m and e β₯ 2. In this article, by using the special linear fractional group PSL(2, p), for each i, 1 β€ i β€ e, except particular cases, we construct a 2-design with parameters v = p + 1, k = (p -1)/2 i + 1 and Ξ» = ((p-1)/2 i +1)(p-1)/2 =