Inequivalence of Difference Sets: On a Remark of Baumert

[摘要] An often cited statement of Baumert in his book Cyclic difference sets asserts that four well known families of cyclic $(4t-1,2t-1,t-1)$ difference sets are inequivalent, apart from a small number of exceptions with $t< 8$. We are not aware of a proof

[学科分类] 离散数学和组合数学

[关键词] difference sets