arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.00185math.MGcs.ITmath.ITmath.NT
收藏

球面码与填装的新上界

New upper bounds for spherical codes and packings

Naser T. Sardari, Masoud Zargar

AI总结:

该研究通过三重相关分析、高维质量集中性及雅可比多项式根间距研究,改进了高维θ-球面码规模与球面填装密度的上界,突破了既有结果。

摘要:

在足够高的维度下,我们将所有满足θ<θ*≈62.997°的θ-球面码规模的已知最优上界至少改进了0.4325倍。此外,对于维度n≥2000的球面填装密度,我们实现了至少0.4325+51/n倍的改进。我们的方法还突破了较低维度下许多非数值的球面填装密度界。这是自Kabatyanskii和Levenshtein的工作[KL]以及后来Levenshtein的改进[Leven79]以来,各维度上的首次此类改进。本文的创新点包括三重相关性分析、高维下质量集中性的运用,以及对雅可比多项式根间距的研究。

英文摘要:

We improve the previously best known upper bounds on the sizes of $θ$-spherical codes for every $θ<θ^*\approx 62.997^{\circ}$ at least by a factor of $0.4325$, in sufficiently high dimensions. Furthermore, for sphere packing densities in dimensions $n\geq 2000$ we have an improvement at least by a factor of $0.4325+\frac{51}{n}$. Our method also breaks many non-numerical sphere packing density bounds in smaller dimensions. This is the first such improvement for each dimension since the work of Kabatyanskii and Levenshtein~\cite{KL} and its later improvement by Levenshtein~\cite{Leven79}. Novelties of this paper include the analysis of triple correlations, usage of the concentration of mass in high dimensions, and the study of the spacings between the roots of Jacobi polynomials.

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。

↑