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arXiv 2111.08084cs.ITmath.IT
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通过非线性系统求解循环格的最小范数与中心密度

Finding the Minimum Norm and Center Density of Cyclic Lattices via Nonlinear Systems

William Lima da Silva Pinto, Carina Alves

AI总结:

本文研究具有循环生成矩阵的循环格子类,通过构造非线性方程组求解,在奇数维得到与 $D_n$ 同样稠密的格,并在满足 $n \in 2\mathbb{Z} \backslash 4\mathbb{Z}$ 的偶数维得到比 $A_n$ 更稠密的格。

摘要:

具有循环生成矩阵的格是循环格的一个子类。该子类可由包含一个向量及其循环位移的基来描述。本文给出了在某些条件下,此类格的任意向量的范数表达式可被大幅简化的条件,并研究了在这些条件下得到的一些格。我们展示了若干非线性方程组,其解可产生在奇数维中与 $D_n$ 同样稠密的格。至于偶数维,只要 $n \in 2\mathbb{Z} \backslash 4\mathbb{Z}$,我们就能得到比 $A_n$ 更稠密的格。

英文摘要:

Lattices with a circulant generator matrix represent a subclass of cyclic lattices. This subclass can be described by a basis containing a vector and its circular shifts. In this paper, we present certain conditions under which the norm expression of an arbitrary vector of this type of lattice is substantially simplified, and then investigate some of the lattices obtained under these conditions. We exhibit systems of nonlinear equations whose solutions yield lattices as dense as $D_n$ in odd dimensions. As far as even dimensions, we obtain lattices denser than $A_n$ as long as $n \in 2\mathbb{Z} \backslash 4\mathbb{Z}$.

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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