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In this paper we discuss approximation of partially smooth functions. The problem arises naturally in the study of laminated currents.

动力系统 · 数学 2015-06-26 John Fornaess , Yinxia Wang , Erlend Fornaess Wold

The main goal of this paper is to present the application of structural sums, mathematical objects originating from the computational materials science, in construction of a feature space vector of 2D random composites simulated by…

计算工程、金融与科学 · 计算机科学 2019-06-19 Wojciech Nawalaniec

We study the computation of lower and upper probabilities of hitting a target set of states for imprecise Markov chains, where transition uncertainty is modelled by a convex set of transition matrices. In the precise case, hitting…

概率论 · 数学 2026-03-18 Marco Sangalli , Erik Quaeghebeur , Thomas Krak

Given an m-dimensional compact submanifold $\mathbf{M}$ of Euclidean space $\mathbf{R}^s$, the concept of mean location of a distribution, related to mean or expected vector, is generalized to more general $\mathbf{R}^s$-valued functionals…

统计理论 · 数学 2007-08-07 Harrie Hendriks , Zinoviy Landsman

Functional lifting methods provide a tool for approximating solutions of difficult non-convex problems by embedding them into a larger space. In this work, we investigate a mathematically rigorous formulation based on embedding into the…

最优化与控制 · 数学 2020-07-07 Thomas Vogt , Roland Haase , Danielle Bednarski , Jan Lellmann

We present a generic solution to the fundamental problem of how to connect two points in a plane by a smooth curve that goes through these points with a given slope. The smoothness of any curve depends both on its curvature and its length.…

经典物理 · 物理学 2009-11-07 Alex Alon , Sven Bergmann

We establish that a generalized H\"{o}lder continuous function on an $(m-2)$-Ahlfors regular compact set in $\mathbb{R}^m$ can be approximated by solutions of an elliptic equation, with the rate of approximation determined by the continuity…

偏微分方程分析 · 数学 2023-07-24 Grigori Rozenblum , Nikolai Shirokov

The parametric geometry of numbers has allowed to visualize the simultaneous approximation properties of a collection of real numbers through the combined graph of the related successive minima functions. Several inequalities among…

数论 · 数学 2021-03-18 Wolfgang M. Schmidt , Leonhard Summerer

We obtain restrictions on the persistence barcodes of Laplace-Beltrami eigenfunctions and their linear combinations on compact surfaces with Riemannian metrics. Some applications to uniform approximation by linear combinations of Laplace…

A determination of the fixed components, base points and irregularity is made for arbitrary numerically effective divisors on any smooth projective rational surface having an effective anticanonical divisor. All of the results are proven…

alg-geom · 数学 2009-09-25 Brian Harbourne

We propose a novel algebraic framework for treating probability distributions represented by their cumulants such as the mean and covariance matrix. As an example, we consider the unsupervised learning problem of finding the subspace on…

Alignment algorithms usually rely on simplified models of gaps for computational efficiency. Based on an isomorphism between alignments and physical helix-coil models, we show in statistical mechanics that alignments with realistic laws for…

基因组学 · 定量生物学 2015-06-26 E. Yeramian , E. Debonneuil

Polynomials are common algebraic structures, which are often used to approximate functions including probability distributions. This paper proposes to directly define polynomial distributions in order to describe stochastic properties of…

信息论 · 计算机科学 2022-12-12 Yue Yu , Pavel Loskot

We propose a general impulsive model for scattering of molecules from a flat solid surface. It is assumed within the framework of this model that an encounter of an atom (or ion) with the surface is a series of elastic (in the direction…

Two discrete dynamical systems are discussed and analyzed whose trajectories encode significant explicit information about a number of problems in combinatorial probability, including graphical enumeration on Riemann surfaces and random…

可精确求解与可积系统 · 物理学 2019-01-25 Tova Brown , Nicholas M. Ercolani

A new method is introduced for solving Laplace problems on 2D regions with corners by approximation of boundary data by the real part of a rational function with fixed poles exponentially clustered near each corner. Greatly extending a…

数值分析 · 数学 2019-06-21 Abinand Gopal , Lloyd N. Trefethen

We propose a novel study of the stochastic proximal gradient method for minimizing the sum of two convex functions, one of which is smooth. Under suitable assumptions and without requiring any boundedness or control of the variance of the…

最优化与控制 · 数学 2026-04-16 Javier I. Madariaga

A class of surfaces-graphs in a Riemannian 3-space with a prescribed projection of one field of principal directions onto a surface $\Pi$ is considered. A problem of determination of such surfaces when both principal curvatures are given…

微分几何 · 数学 2010-03-11 Vladimir Rovenski , Leonid Zelenko

In this paper, we will give an upper bound and a lower bound of the arithmetic Hilbert-Samuel function of projective hypersurfaces, which are uniform and explicit. These two bounds have the optimal dominant terms. As an application, we use…

代数几何 · 数学 2018-08-13 Chunhui Liu

We consider an elliptic optimal control problem where the objective functional contains an integral along a surface of codimension 1, also known as a hypersurface. In particular, we use a fidelity term that encourages the state to take…

数值分析 · 数学 2014-11-19 C. Brett , A. S. Dedner , C. M. Elliott