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The maximal generalised roundness of finite metric spaces
Proceedings of the American Mathematical Society ( IF 0.8 ) Pub Date : 2020-10-20 , DOI: 10.1090/proc/15298
Gavin Robertson

Abstract:A useful tool for computing the maximal generalised roundness of a finite metric space is a formula of Sánchez. Using well-known properties of the classical Cayley-Menger and Gramian matrices, we provide two simplifications of Sánchez's formula that in particular do not require the calculation of any matrix inverses. To demonstrate the usefulness of these two new formulas we provide a simpler proof of Murugan's classification of the subsets of the Hamming cube that have maximal generalised roundness greater than $ 1$.


中文翻译:

有限度量空间的最大广义圆度

摘要:Sánchez公式是计算有限度量空间的最大广义圆度的有用工具。利用经典的Cayley-Menger矩阵和Gramian矩阵的众所周知的属性,我们提供了Sánchez公式的两种简化,特别是不需要计算任何矩阵逆。为了证明这两个新公式的实用性,我们提供了对最大广义圆度大于的汉明立方体子集的Murugan分类的更简单证明$ 1 $
更新日期:2020-11-12
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