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In this paper, we consider the random plane forest uniformly drawn from all possible plane forests with a given degree sequence. Under suitable conditions on the degree sequences, we consider the limit of a sequence of such forests with the…

概率论 · 数学 2017-04-10 Tao Lei

We provide (high probability) bounds on the condition number of random feature matrices. In particular, we show that if the complexity ratio $\frac{N}{m}$ where $N$ is the number of neurons and $m$ is the number of data samples scales like…

机器学习 · 统计学 2021-11-08 Zhijun Chen , Hayden Schaeffer

In this article a collection of random self-similar fractal dendrites is constructed, and their Hausdorff dimension is calculated. Previous results determining this quantity for random self-similar structures have relied on geometrical…

概率论 · 数学 2012-10-23 David A. Croydon

We consider the problem of sensitivity of threshold risk, defined as the probability of a function of a random variable falling below a specified threshold level $\delta >0.$ We demonstrate that for polynomial and rational functions of that…

概率论 · 数学 2020-10-29 Vladimir V. Ejov , Jerzy A. Filar , Zhihao Qiao

We develop a simple computational model for cell boundary evolution in plastic deformation. We study the cell boundary size distribution and cell boundary misorientation distribution that experimentally have been found to have scaling forms…

材料科学 · 物理学 2013-05-29 James P. Sethna , Valerie R. Coffman , Eugene Demler

In Achlioptas processes, starting from an empty graph, in each step two potential edges are chosen uniformly at random, and using some rule one of them is selected and added to the evolving graph. Although the evolution of such `local'…

概率论 · 数学 2017-12-12 Oliver Riordan , Lutz Warnke

Consider a uniform expanders family G_n with a uniform bound on the degrees. It is shown that for any p and c>0, a random subgraph of G_n obtained by retaining each edge, randomly and independently, with probability p, will have at most one…

概率论 · 数学 2007-05-23 Noga Alon , Itai Benjamini , Alan Stacey

We define regularity scales to study the behavior of the Calabi flow. Based on estimates of the regularity scales, we obtain convergence theorems of the Calabi flow on extremal Kahler surfaces, under the assumption of global existence of…

微分几何 · 数学 2019-11-21 Haozhao Li , Bing Wang , Kai Zheng

We consider metric graph Gaussian free field (GFF) defined on polygons of $\delta\mathbb{Z}^2$ with alternating boundary data. The crossing probabilities for level-set percolation of metric graph GFF have scaling limits. When the boundary…

概率论 · 数学 2020-04-21 Mingchang Liu , Hao Wu

We investigate the sample paths regularity of operator scaling alpha-stable random fields. Such fields were introduced as anisotropic generalizations of self-similar fields and satisfy a scaling property for a real matrix E. In the case of…

概率论 · 数学 2016-08-14 Hermine Biermé , Céline Lacaux

We relate various concepts of fractal dimension of the limiting set C in fractal percolation to the dimensions of the set consisting of connected components larger than one point and its complement in C (the "dust"). In two dimensions, we…

概率论 · 数学 2012-03-08 Erik Broman , Federico Camia , Matthijs Joosten , Ronald Meester

It can be difficult to interpret a coefficient of an uncertain model. A slope coefficient of a regression model may change as covariates are added or removed from the model. In the context of high-dimensional data, there are too many model…

统计方法学 · 统计学 2024-08-20 Brian Knaeble , R. Mitchell Hughes , George Rudolph , Mark A. Abramson , Daniel Razo

Consider the classical $(2+1)$-dimensional Solid-On-Solid model above a hard wall on an $L\times L$ box of $\bbZ^2$. The model describes a crystal surface by assigning a non-negative integer height $\eta_x$ to each site $x$ in the box and 0…

Quasiconformal maps in the complex plane are homeomorphisms that satisfy certain geometric distortion inequalities; infinitesimally, they map circles to ellipses with bounded eccentricity. The local distortion properties of these maps give…

复变函数 · 数学 2024-09-12 Rosemarie Bongers

We consider a formal discretisation of Euclidean quantum gravity defined by a statistical model of random $3$-regular graphs and making using of the Ollivier curvature, a coarse analogue of the Ricci curvature. Numerical analysis shows that…

高能物理 - 理论 · 物理学 2021-03-09 Christy Kelly , Carlo Trugenberger , Fabio Biancalana

We consider regular open curves in R^n with fixed boundary points and moving according to the L^{2}-gradient flow for a generalisation of the Helfrich functional. Natural boundary conditions are imposed along the evolution. More precisely,…

偏微分方程分析 · 数学 2013-02-05 Anna Dall'Acqua , Paola Pozzi

Statistical solutions of incompressible Euler describe turbulent dynamics as time-parameterized laws on $L^2$ whose multi-point correlations satisfy an infinite hierarchy of weak identities. Modern generative samplers for PDE forecasting…

偏微分方程分析 · 数学 2026-02-24 Victor Armegioiu

For a family of bond percolation models on Z^{2} that includes the Fortuin-Kasteleyn random cluster model, we consider properties of the ``droplet'' that results, in the percolating regime, from conditioning on the existence of an open dual…

概率论 · 数学 2009-10-31 Kenneth S. Alexander

Stabilization is still a somewhat controversial issue concerning its very existence and also the precise conditions for its occurrence. The key quantity to settle these questions is the ionization probability, for which hitherto no…

原子物理 · 物理学 2007-05-23 C. Figueira de Morisson Faria , A. Fring , R. Schrader

The robust statistical description of dynamical systems under perturbations is a central problem in ergodic theory. In this paper, we investigate the statistical properties of skew-product maps driven by a subshift of finite type with…

动力系统 · 数学 2026-03-23 Davi Lima , Rafael Lucena