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This paper is the first of three in which I study the moduli space of isometry classes of (compact) globally hyperbolic spacetimes (with boundary). I introduce a notion of Gromov-Hausdorff distance which makes this moduli space into a…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Johan Noldus

Geometric characteristics of metric spaces that appear in formulas of the Gromov--Hausdorff distances from these spaces to so-called simplexes, i.e., to the metric spaces, all whose non-zero distances are the same are studied. The…

Metric Geometry · Mathematics 2019-06-25 D. S. Grigor'ev , A. O. Ivanov , A. A. Tuzhilin

This is a pedagogical introduction covering maps of metric spaces, Gromov-Hausdorff distance and its "physical" meaning, and dilation structures as a convenient simplification of an exhaustive database of maps of a metric space into…

Metric Geometry · Mathematics 2011-12-24 Marius Buliga

Gromov introduced two distance functions, the box distance and the observable distance, on the space of isomorphism classes of metric measure spaces and developed the convergence theory of metric measure spaces. We investigate several…

Metric Geometry · Mathematics 2023-04-17 Daisuke Kazukawa , Hiroki Nakajima , Takashi Shioya

The Gromov-Hausdorff distance measures the similarity between two metric spaces by isometrically embedding them into an ambient metric space. We introduce an analogue of this distance for metric spaces endowed with directed structures. The…

In this paper geometry of Gromov-Hausdorff distance on the class of all metric spaces considered up to an isometry is investigated. For this class continuous curves and their lengths are defined, and it is shown that the Gromov-Hausdorff…

Metric Geometry · Mathematics 2020-09-02 S. I. Borzov , A. O. Ivanov , A. A. Tuzhilin

We calculate the Gromov--Hausdorff distance between a line segment and a circle in the Euclidean plane. To do that, we introduced a few new notions like round spaces and nonlinearity degree of a metric space.

Metric Geometry · Mathematics 2021-01-15 Yibo Ji , Alexey A. Tuzhilin

This note addresses computational difficulty of the Gromov-Wasserstein distance frequently mentioned in the literature. We provide details on the structure of the Gromov-Wasserstein distance optimization problem that show its non-convex…

Machine Learning · Statistics 2026-02-10 Natalia Kravtsova

In this paper, we study the geometry of non-Archimedean Gromov-Hausdorff metric. This is the first part of our series work, which we try to establish some facts about the counterpart of Gromov-Hausdorff metric in the non-Archimedean spaces.…

Metric Geometry · Mathematics 2012-06-05 Derong Qiu

The purpose of this article is to demonstrate the connection between the properties of the Gromov--Hausdorff distance and the Borsuk conjecture. The Borsuk number of a given bounded metric space $X$ is the infimum of cardinal numbers $n$…

Metric Geometry · Mathematics 2022-03-09 Alexander O. Ivanov , Alexey A. Tuzhilin

The Gromov-Hausdorff distance is a dissimilarity metric capturing how far two spaces are from being isometric. The Gromov-Prokhorov distance is a similar notion for metric measure spaces. In this paper, we study the topological dimension of…

Metric Geometry · Mathematics 2025-02-18 Hiroki Nakajima , Takamitsu Yamauchi , Nicolò Zava

In the present paper a distinguishability of bounded metric spaces by the set of the Gromov--Hausdorff distances to so-called simplexes (metric spaces with unique non-zero distance) is investigated. It is easy to construct an example of…

Metric Geometry · Mathematics 2024-12-30 A. O. Ivanov , E. S. Lychagina , A. A. Tuzhilin

We survey some basic results on the Gromov-Prohorov distance between metric measure spaces. (We do not claim any new results.) We give several different definitions and show the equivalence of them. We also show that convergence in the…

Probability · Mathematics 2020-06-03 Svante Janson

The Hausdorff distance measures how far apart two sets are in a common metric space. By contrast, the Gromov-Hausdorff distance provides a notion of distance between two abstract metric spaces. How do these distances behave for quotients of…

The paper is devoted to geometrical investigation of the Gromov-Hausdorff distance on the classes of all metric spaces and of all bounded metric spaces. The main attention is paid to pass connectivity questions. The pass connected…

Metric Geometry · Mathematics 2022-04-06 A. Ivanov , R. Tsvetnikov , A. Tuzhilin

This paper studies $l^p$-products of metric spaces and provides estimates for the Gromov-Hausdorff distances between them. The case of linear products is considered separately, and sufficient conditions for attainability of the estimates…

Metric Geometry · Mathematics 2026-03-03 Emin Abdullaev

The Gromov-Wasserstein (GW) distance is a powerful tool for comparing metric measure spaces which has found broad applications in data science and machine learning. Driven by the need to analyze datasets whose objects have increasingly…

Metric Geometry · Mathematics 2026-03-10 Martin Bauer , Facundo Mémoli , Tom Needham , Mao Nishino

These informal notes deal with some basic properties of metric spaces, especially concerning lengths of curves.

Metric Geometry · Mathematics 2007-09-27 Stephen Semmes

The Gromov--Hausdorff distance (hereinafter referred to as the GH-distance) is a measure of non-isometricity of metric spaces. In this paper, we study a modification of this distance that also takes topological differences into account. The…

Metric Geometry · Mathematics 2025-12-03 Semeon A. Bogaty , Alexey A. Tuzhilin

We define a distance analogous to the Gromov-Hausdorff distance that enables the comparison of arbitrary quasi-isometric spaces. We also investigate properties preserved under limits with respect to this distance, as well as properties of…

Metric Geometry · Mathematics 2026-05-28 Alexei Naianzin
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