Existence Status of Some Previously Open Abelian Difference Sets

Document Type

Article

Publication Date

7-28-2006

Abstract

The paper establishes the existence status of several previously open abelian difference sets. In particular, the authors prove the nonexistence of all but finitely many McFarland difference sets with parameters (qd+1(s+1),qd(qd+1−1q−1),qd(qd−1q−1))(q^{d+1}(s+1), q^d(\frac{q^{d+1}-1}{q-1}), q^d(\frac{q^d-1}{q-1}))(qd+1(s+1),qd(q−1qd+1−1​),qd(q−1qd−1​)) where s=qd+1−1q−1s=\frac{q^{d+1}-1}{q-1}s=q−1qd+1−1​. They also determine the existence or nonexistence of several specific Hadamard and Menon difference sets using character theory, algebraic number theory, and computational methods.

DOI

10.1016/j.disc.2005.06.031

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