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This paper presents a formal definition of stability for node centrality measures in weighted graphs. It is shown that the commonly used measures of degree, closeness and eigenvector centrality are stable whereas betweenness centrality is…

社会与信息网络 · 计算机科学 2014-10-21 Santiago Segarra , Alejandro Ribeiro

The notion of ``fundamental constant'' is heavily theory-laden. A natural, fairly precise formulation is possible in the context of the standard model (here defined to include gravity). Some fundamental constants have profound geometric…

高能物理 - 唯象学 · 物理学 2007-09-03 Frank Wilczek

Under Gromov--Hausdorff convergence, and equivariant Gromov--Hausdorff convergence, we prove stability results of Wasserstein spaces over certain classes of singular and non-singular spaces. For example, we obtain an analogue of Perelman's…

度量几何 · 数学 2024-06-11 Mohammad Alattar

We present several applications of matrix-theoretic inequalities to the magnitude of metric spaces. We first resolve an open problem by showing that the magnitude of any finite metric space of negative type is less than or equal to its…

度量几何 · 数学 2025-09-30 Kiyonori Gomi , Mark Meckes

A labeled metric space is intuitively speaking a metric space together with a special set of points to be understood as the geometric boundary of the space. We study basic properties of a recently introduced labeled Gromov-Hausdorff…

度量几何 · 数学 2022-10-04 Reijo Jaakkola , Antti Kykkänen

Generalized uncertainty principle and breakdown of the spacetime continuum certainly represent two important results derived of various approaches related to quantum gravity and black hole physics near the well-known Planck scale. The…

量子物理 · 物理学 2011-06-14 Marcelo A Marchiolli , Maurizio Ruzzi

Metric space magnitude, an active subject of research in algebraic topology, originally arose in the context of biology, where it was used to represent the effective number of distinct species in an environment. In a more general setting,…

机器学习 · 计算机科学 2020-07-06 Eric Bunch , Daniel Dickinson , Jeffery Kline , Glenn Fung

In this work, we are interested in characterizing typical (generic) dimensional properties of invariant measures associated with the full-shift system, $T$, in a product space whose alphabet is a perfect and separable metric space (thus,…

动力系统 · 数学 2021-01-26 Silas Luiz Carvalho , Alexander Condori

Magnitude is a measure of size defined for certain classes of metric spaces; it arose from ideas in category theory. In particular, magnitude is defined for compact subsets of Euclidean space and, in arXiv:1507.02502, Barcel\'o and Carbery…

度量几何 · 数学 2018-04-09 Simon Willerton

We consider Schmidt's game on the space of compact subsets of a given metric space equipped with the Hausdorff metric, and the space of continuous functions equipped with the supremum norm. We are interested in determining the generic…

度量几何 · 数学 2021-03-26 Ábel Farkas , Jonathan M. Fraser , Erez Nesharim , David Simmons

A branch of generalizations of the Banach Fixed Point Theorem replaces contractivity by a weaker but still effective property. The aim of the present note is to extend the contraction principle in this spirit for such complete semimetric…

泛函分析 · 数学 2017-06-29 Mihály Bessenyei , Zsolt Páles

The paper studies the class of all metric spaces considered up to zero Gromov-Hausdorff distance between them. In this class, we examine clouds - classes of spaces situated at finite Gromov-Hausdorff distances from a reference space. We…

度量几何 · 数学 2025-05-30 B. A. Nesterov

Given the significance of physical measures in understanding the complexity of dynamical systems as well as the noisy nature of real-world systems, investigating the stability of physical measures under noise perturbations is undoubtedly a…

动力系统 · 数学 2025-06-24 Weiwei Qi , Zhongwei Shen , Yingfei Yi

This report introduces and investigates a family of metrics on sets of pointed Kripke models. The metrics are generalizations of the Hamming distance applicable to countably infinite binary strings and, by extension, logical theories or…

逻辑 · 数学 2017-08-28 Dominik Klein , Rasmus K. Rendsvig

We can approximate a continuous self-map $f$ of a compact metric space by discretizing the space into a grid. Through either the map itself or a time series, $f$ induces a multivalued grid map $\mathcal F$. The dynamical properties of…

动力系统 · 数学 2020-12-11 Jim Wiseman

We investigate the geometry of the family $\cal M$ of isometry classes of compact metric spaces, endowed with the Gromov-Hausdorff metric. We show that sufficiently small neighborhoods of generic finite spaces in the subspace of all finite…

度量几何 · 数学 2016-04-27 Stavros Iliadis , Alexander Ivanov , Alexey Tuzhilin

This paper studies the magnitude homology groups of geodesic metric spaces. We start with a description of the second magnitude homology of a general metric space in terms of the zeroth homology groups of certain simplicial complexes. Then,…

代数拓扑 · 数学 2025-04-30 Kiyonori Gomi

We present a new general framework for metrization of Gromov-Hausdorff-type topologies on non-compact metric spaces. We also give easy-to-check conditions for separability and completeness and hence the measure theoretic requirements are…

度量几何 · 数学 2025-09-08 Ryoichiro Noda

Consider the configuration spaces of manifolds. An influential theorem of McDuff, Segal and Church shows that the (co)homology of the unordered configuration space is independent of number of points in a range of degree called the stable…

代数拓扑 · 数学 2023-06-19 Muhammad Yameen

Following the general principles of noncommutative geometry, it is possible to define a metric on the space of pure states of the noncommutative algebra generated by the coordinates. This metric generalizes the usual Riemannian one. We…

高能物理 - 理论 · 物理学 2015-06-26 B. Iochum , T. Krajewski , P. Martinetti