?₁-distortion of Wasserstein metrics: A tale of two dimensions

?₁-distortion of Wasserstein metrics: A tale of two dimensions
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? - Wasserstein 指标的扭曲:二维的故事

DOI:
10.1090/btran/143
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发表时间:
2023
期刊:
Series B
影响因子:
--
通讯作者:
Schlumprecht, Th.
Schlumprecht, Th.
中科院分区:
--
文献类型:
--
作者:
Baudier, F.;Gartland, C.;Schlumprecht, Th.

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通过对Kislyakov的一个论证进行离散化,Naor和Schechtman证明了平面网格上的1-Wasserstein度量具有-畸变,其下界为的常数倍。我们提供了一个新的“维数”的解释Kislyakov的论点,表明ifis一个序列的图的等周维数和Lipschitz谱维数等于一个共同的数字,然后1-Wasserstein度量overhas-distortion有界以下的一个常数倍。我们继续计算这些尺寸的某些图的幂。特别地,我们得到了钻石图序列的等周维数和Lipschitz-谱维数等于2,作为推论,得到了1-Wasserstein度量的过-畸变以的常数倍有界于下.这回答了一个问题的Dilworth,Kutzarova和Ostrovskii和展览只有第三序列的嵌入图的序列的1-Wasserstein度量是不可嵌入的。引用
By discretizing an argument of Kislyakov, Naor and Schechtman proved that the 1-Wasserstein metric over the planar gridhas-distortion bounded below by a constant multiple of. We provide a new “dimensionality” interpretation of Kislyakov’s argument, showing that ifis a sequence of graphs whose isoperimetric dimension and Lipschitz-spectral dimension equal a common number, then the 1-Wasserstein metric overhas-distortion bounded below by a constant multiple of. We proceed to compute these dimensions for-powers of certain graphs. In particular, we get that the sequence of diamond graphshas isoperimetric dimension and Lipschitz-spectral dimension equal to 2, obtaining as a corollary that the 1-Wasserstein metric overhas-distortion bounded below by a constant multiple of. This answers a question of Dilworth, Kutzarova, and Ostrovskii and exhibits only the third sequence of-embeddable graphs whose sequence of 1-Wasserstein metrics is not-embeddable. References
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