Hadamard Matrices Modulo 5
Hadamard Matrices Modulo 5
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DOI:
10.1002/jcd.21369
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发表时间:
2013-07
影响因子:
0.7
通讯作者:
Moon Ho Lee;Ferenc Szöllősi
中科院分区:
文献类型:
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作者:
Moon Ho Lee;Ferenc Szöllősi
In this paper, we introduce modular symmetric designs and use them to study the existence of Hadamard matrices modulo 5. We prove that there exist 5‐modular Hadamard matrices of order n if and only if n¬≡3,7( mod 10) or n≠6,11 . In particular, this solves the 5‐modular version of the Hadamard conjecture.