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We study some properties of the randomized series and their applications to the geometric structure of Banach spaces. For $n\ge 2$ and $1<p<\infty$, it is shown that $\ell_\infty^n$ is representable in a Banach space $X$ if and only if it…

泛函分析 · 数学 2007-06-27 Han Ju Lee

We give some natural sufficient conditions for balls in a metric space to have small intersection. Roughly speaking, this happens when the metric space is (i) expanding and (ii) well-spread, and (iii) a certain random variable on the…

组合数学 · 数学 2022-01-04 Jaehoon Kim , Hong Liu , Tuan Tran

Let $X_1,\ldots,X_n$ be i.i.d.\ random points in the $d$-dimensional Euclidean space sampled according to one of the following probability densities: $$ f_{d,\beta} (x) = \text{const} \cdot (1-\|x\|^2)^{\beta}, \quad \|x\|\leq 1, \quad…

度量几何 · 数学 2017-12-22 Zakhar Kabluchko , Daniel Temesvari , Christoph Thaele

One of the main concepts in quantum physics is a density matrix, which is a symmetric positive definite matrix of trace one. Finite probability distributions are a special case where the density matrix is restricted to be diagonal. Density…

量子物理 · 物理学 2014-08-14 Manfred K. Warmuth , Dima Kuzmin

We derive the phase space density of bosons from a general boson interferometry formula. We find that the phase space density is connected with the two-particles and the single particle density distribution functions. If the boson density…

高能物理 - 唯象学 · 物理学 2010-01-15 Q. H. Zhang , J. Barrette , C. Gale

Let $W= \{W(t): t \in \mathbb{R}_+^N \}$ be an $(N, d)$-Brownian sheet and let $E \subset (0, \infty)^N$ and $F \subset \mathbb{R}^d$ be compact sets. We prove a necessary and sufficient condition for $W(E)$ to intersect $F$ with positive…

概率论 · 数学 2025-10-10 Cheuk Yin Lee , Yimin Xiao

In this survey, we discuss volumetric and combinatorial results concerning (mostly finite) intersections or unions of balls (mostly of equal radii) in the $d$-dimensional real vector space, mostly equipped with the Euclidean norm. Our first…

度量几何 · 数学 2025-12-30 Károly Bezdek , Zsolt Lángi , Márton Naszódi

We show that, by correctly selecting the probability distribution function $p(s)$ for a particle's distance-to-collision, the nonclassical diffusion equation can be represented exactly by the nonclassical linear Boltzmann equation for an…

数学物理 · 物理学 2016-02-03 Richard Vasques

The present paper discusses the diffusion approximation of the linear Boltzmann equation in cases where the collision frequency is not uniformly large in the spatial domain. Our results apply for instance to the case of radiative transfer…

偏微分方程分析 · 数学 2015-03-23 Claude Bardos , Etienne Bernard , François Golse , Rémi Sentis

Two transformations $\mathcal{A}_{1}$ and $\mathcal{A}_{2}$ of L\'{e}vy measures on $\mathbb{R}^{d}$ based on the arcsine density are studied and their relation to general Upsilon transformations is considered. The domains of definition of…

概率论 · 数学 2010-07-06 Makoto Maejima , Victor Perez-Abreu , Ken-iti Sato

A metric probability space $(\Omega,d)$ obeys the ${\it concentration\; of\; measure\; phenomenon}$ if subsets of measure $1/2$ enlarge to subsets of measure close to 1 as a transition parameter $\epsilon$ approaches a limit. In this paper…

概率论 · 数学 2024-08-07 Jonathan Root , Mark Kon

The stochastic models investigated in this paper describe the evolution of a set of $F_N$ identical balls scattered into $N$ urns connected by an underlying symmetrical graph with constant degree $h_N$. After some random amount of time {\em…

概率论 · 数学 2018-12-06 Wen Sun , Philippe Robert

Consider the ensemble of Real Symmetric Toeplitz Matrices, each entry iidrv from a fixed probability distribution p of mean 0, variance 1, and finite higher moments. The limiting spectral measure (the density of normalized eigenvalues)…

概率论 · 数学 2010-11-16 Christopher Hammond , Steven J. Miller

We consider the problem of recovering a distribution function on the real line from observations additively contaminated with errors following the standard Laplace distribution. Assuming that the latent distribution is completely unknown…

统计方法学 · 统计学 2017-08-21 Catia Scricciolo

We consider a one-dimensional aggregation-diffusion equation, which is the gradient flow in the Wasserstein space of a functional with competing attractive-repulsive interactions. We prove that the fully deterministic particle…

偏微分方程分析 · 数学 2021-01-01 Sara Daneri , Emanuela Radici , Eris Runa

We consider the inverse problem of determining the permeability from the pressure in a Darcy model of flow in a porous medium. Mathematically the problem is to find the diffusion coefficient for a linear uniformly elliptic partial…

统计理论 · 数学 2011-02-02 Masoumeh Dashti , Andrew M. Stuart

We consider the 2-dimensional random matching problem in $\mathbb{R}^2.$ In a challenging paper, Caracciolo et. al. arXiv:1402.6993 on the basis of a subtle linearization of the Monge Ampere equation, conjectured that the expected value of…

数学物理 · 物理学 2020-08-26 Dario Benedetto , Emanuele Caglioti

The main result of the paper: Given any $\varepsilon>0$, every locally finite subset of $\ell_2$ admits a $(1+\varepsilon)$-bilipschitz embedding into an arbitrary infinite-dimensional Banach space. The result is based on two results which…

泛函分析 · 数学 2023-09-14 Florin Catrina , Sofiya Ostrovska , Mikhail I. Ostrovskii

We develop a probabilistic approach to study the volumetric and geometric properties of unit balls $\mathbb B_{q,1}^n$ of finite-dimensional Lorentz sequences spaces $\ell_{q,1}^n$. More precisely, we show that the empirical distribution of…

泛函分析 · 数学 2024-09-23 Zakhar Kabluchko , Joscha Prochno , Mathias Sonnleitner

We study the length of cycles in the model of spatial random permutations in Euclidean space. In this model, for given length $L$, density $\rho$, dimension $d$ and jump density $\varphi$, one samples $\rho L^d$ particles in a…

概率论 · 数学 2019-02-12 Dor Elboim , Ron Peled