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There is a word metric $d$ on countably generated free group $\Gamma$ such that $(\Gamma,d)$ does not admit a coarse uniform embedding into a Hilbert space.

几何拓扑 · 数学 2007-05-23 A. N. Dranishnikov

In 1950 Maharam asked whether every disintegration of a $\sigma$-finite measure into $\sigma$-finite measures is necessarily uniformly $\sigma$-finite. Over the years under special conditions on the disintegration, the answer was shown to…

逻辑 · 数学 2013-03-15 Karl Backs , Steve Jackson , R. Daniel Mauldin

Representable implication algebras are known to be axiomatised by a finite number of equations (making the representation and finite representation problems decidable here). We show that this also holds in the context of unary (and binary)…

逻辑 · 数学 2023-01-09 Andrew Lewis-Smith Jaš Šemrl

We deal with the existing problem of filtered multiplicative bases of finite-dimensional associative algebras. For an associative algebra A over a field, we investigate when the property of having a filtered multiplicative basis is…

环与代数 · 数学 2014-10-02 V. Bovdi , A. Grishkov , S. Siciliano

Do object part localization methods produce bilaterally symmetric results on mirror images? Surprisingly not, even though state of the art methods augment the training set with mirrored images. In this paper we take a closer look into this…

计算机视觉与模式识别 · 计算机科学 2015-01-22 Heng Yang , Ioannis Patras

The Homeomorphic Embedding relation has been amply used for defining termination criteria of symbolic methods for program analysis, transformation, and verification. However, homeomorphic embedding has never been investigated in the context…

编程语言 · 计算机科学 2018-11-29 María Alpuente , Angel Cuenca-Ortega , Santiago Escobar , José Meseguer

A set A of natural numbers is finitely embeddable in another such set B if every finite subset of A has a rightward translate that is a subset of B. This notion of finite embeddability arose in combinatorial number theory, but in this paper…

逻辑 · 数学 2015-12-11 Andreas Blass , Mauro Di Nasso

We examine the metrics that arise when a finite set of points is embedded in the real line, in such a way that the distance between each pair of points is at least 1. These metrics are closely related to some other known metrics in the…

组合数学 · 数学 2011-08-02 Adam N. Letchford , Hanna Seitz , Dirk Oliver Theis

Although algorithmic randomness with respect to various non-uniform computable measures is well-studied, little attention has been paid to algorithmic randomness with respect to computable \emph{trivial} measures, where a measure $\mu$ on…

逻辑 · 数学 2015-03-24 Christopher P. Porter

We prove general results about separation and weak$^\#$-convergence of boundedly finite measures on separable metric spaces and Souslin spaces. More precisely, we consider an algebra of bounded real-valued, or more generally a $*$-algebra…

概率论 · 数学 2016-09-12 Wolfgang Löhr , Thomas Rippl

It is shown that universal algebras that are injective in their equational classes are characterized by internal property that can be called completeness. We define universal algebra $A$ as complete (closed to simple extensions) if for each…

交换代数 · 数学 2021-12-14 Pavlo Dzikovskyi

We introduce a notion of integration defined from filters over families of finite sets. This procedure corresponds to determining the average value of functions whose range lies in any algebraic structure in which finite averages make…

逻辑 · 数学 2021-08-27 Emanuele Bottazzi , Monroe Eskew

The challenge of understanding quantum measurement persists as a fundamental issue in modern physics. Particularly, the abrupt and energy-non-conserving collapse of the wave function appears to contradict classical thermodynamic laws. The…

量子物理 · 物理学 2026-03-10 Sophie Engineer , Tom Rivlin , Sabine Wollmann , Mehul Malik , Maximilian P. E. Lock

Consider a piecewise affine Lipschitz map $\phi : \Omega \to \mathbb R$, where $\Omega \subset \mathbb R^d$ is an open set, and assume that $x \mapsto x + t \nabla \phi(x)$ is injective for almost every $t > 0$. In (J.-G. Liu, R.~L. Pego,…

偏微分方程分析 · 数学 2026-03-20 Stefano Bianchini , Luca Talamini

Mass spectrometry, especially so-called tandem mass spectrometry, is commonly used to assess the chemical diversity of samples. The resulting mass fragmentation spectra are representations of molecules of which the structure may have not…

机器学习 · 计算机科学 2025-02-18 Niek de Jonge , Justin J. J. van der Hooft , Daniel Probst

We introduce the coherent algebra of a compact metric measure space by analogy with the corresponding concept for a finite graph. As an application we show that upon topologizing the collection of isomorphism classes of compact metric…

算子代数 · 数学 2018-12-04 Alexandru Chirvasitu

We explore the practicability of Nash's Embedding Theorem in vision and imaging sciences. In particular, we investigate the relevance of a result of Burago and Zalgaller regarding the existence of isometric embeddings of polyhedral surfaces…

计算机视觉与模式识别 · 计算机科学 2010-05-12 Emil Saucan

Multimodal tasks, such as image-text retrieval and generation, require embedding data from diverse modalities into a shared representation space. Aligning embeddings from heterogeneous sources while preserving shared and modality-specific…

机器学习 · 计算机科学 2024-12-03 Dongfang Zhao

We define the probability of an equation in a finite algebra as the proportion of tuples in its domain that satisfy it. We call the probabilistic spectrum of an algebra the set of probability values obtained when the equation varies. We…

逻辑 · 数学 2026-04-10 Carles Cardó

An argument is given which exhibits color confinement in nonabelian gauge theory.

高能物理 - 理论 · 物理学 2008-02-03 Izawa K. -I