New restrictions on possible orders of circulant Hadamard matrices

被引：0
|
作者：
Ka Hin Leung
Bernhard Schmidt
机构：
[1] National University of Singapore,Department of Mathematics
[2] Nanyang Technological University,Division of Mathematical Sciences, School of Physical & Mathematical Sciences
来源：
Designs, Codes and Cryptography | 2012年 / 64卷
关键词：
Circulant Hadamard matrices; Barker sequences; Field descent; 15B34; 05B10;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We obtain several new number theoretic results which improve the field descent method. We use these results to rule out many of the known open cases of the circulant Hadamard matrix conjecture. In particular, the only known open case of the Barker sequence conjecture is settled.
引用
收藏
页码：143 / 151
页数：8
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