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arXiv 2610.17871cs.ITmath.IT
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Reed-Muller码RM(1,9)的覆盖半径为242

The Covering Radius of the Reed--Muller Code RM(1,9) is 242

Nanjing Normal University(南京师范大学);Nanjing Foreign Language School(南京外国语学校)

Qichun Wang, Yueying Lou, Zifan Wang

AI总结:

本文解决了密码学与编码理论中长期存在的Reed-Muller码RM(1,9)覆盖半径的开放问题,证明其覆盖半径为242,通过三次布尔函数及相关不等式推导完成非线性度排除。

摘要:

Reed-Muller码RM(1,9)的覆盖半径是多少?这是密码学和编码理论中一个长期存在的开放问题。本文解决了该问题,证明RM(1,9)的覆盖半径为242。我们通过获得达到尖锐Walsh ℓ¹界的三次布尔函数来排除非线性度244;其等号情况要么归为不可能的三次超平面限制,要么归为Brier-Langevin分类中的两个齐次三次形式。为排除非线性度243,我们推导不等式‖W_g‖₁+2|W_g(0)|≤10368,随后要么归为谱界为24,要么归为同一表达式至少为10496。

英文摘要:

What is the covering radius of the Reed--Muller code RM(1,9) ? This is a long-standing open problem in cryptography and coding theory. In this paper, we resolve this problem, and prove that the covering radius of RM(1,9) is 242. We exclude nonlinearity 244 by obtaining a cubic Boolean function achieving a sharp Walsh $\ell^1$ bound. Its equality cases reduce either to an impossible cubic hyperplane restriction or to two homogeneous cubic forms in the Brier--Langevin classification. To exclude nonlinearity 243, we deduce the inequality ${\Vert W_g\Vert }_{1}+2|W_g(0)|\le 10368$, and then reduce either to a spectrum bounded by 24 or to the same expression to be at least 10496.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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