Spectral gap of the discrete Laplacian on triangulations

Spectral gap of the discrete Laplacian on triangulations
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三角测量上离散拉普拉斯算子的谱间隙

DOI:
10.1063/1.5115778
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发表时间:
2019
期刊:
arXiv: Spectral Theory
影响因子:
--
通讯作者:
Yassin Chebbi
Yassin Chebbi
中科院分区:
--
文献类型:
--
作者:
Yassin Chebbi

文献摘要

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我们本文的目标是找到 2-单纯复形上拉普拉斯谱间隙的估计,该复形由完整图的三角剖分组成。通过推广 Cheeger 常数给出了上限估计。较低的估计是从作用于某些子图的函数的离散拉普拉斯算子的第一个非零特征值获得的。
Our goal in this paper is to find an estimate for the spectral gap of the Laplacian on a 2-simplicial complex consisting on a triangulation of a complete graph. An upper estimate is given by generalizing the Cheeger constant. The lower estimate is obtained from the first non-zero eigenvalue of the discrete Laplacian acting on the functions of certain sub-graphs.