Relative (p a , p b , p a , p a-b -Difference Sets
Relative (p a , p b , p a , p a-b -Difference Sets
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相对 (p a , p b , p a , p a-b -差异集
DOI:
10.1006/ffta.1999.0254
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发表时间:
2000
影响因子:
1
通讯作者:
Bernhard Schmidt
中科院分区:
文献类型:
--
作者:
Siu Lun Ma;Bernhard Schmidt
We show that for an odd prime p the exponent of an abelian group of order pa+b containing a relative (pa, pb, pa, pa?b)-difference set cannot exceed p?a/2?+1. Furthermore, we give a new local ring construction of relative (q2u, q, q2u, q2u?1)-difference sets for prime powers q. Finally, we discuss an important open case concerning the existence of abelian relative (pa, p, pa, pa?1)-difference sets.