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In this article we prove the equivalence of certain inequalities for Riesz means of eigenvalues of the Dirichlet Laplacian with a classical inequality of Kac. Connections are made via integral transforms including those of Laplace,…

谱理论 · 数学 2007-12-27 Evans M. Harrell , Lotfi Hermi

In this paper we study the problem of density deconvolution under general assumptions on the measurement error distribution. Typically deconvolution estimators are constructed using Fourier transform techniques, and it is assumed that the…

统计理论 · 数学 2020-02-04 Denis Belomestny , Alexander Goldenshluger

We consider collections of Lagrangian submanifolds of a given symplectic manifold which respect uniform bounds of curvature type coming from an auxiliary Riemannian metric. We prove that, for a large class of metrics on these collections,…

辛几何 · 数学 2021-10-19 Jean-Philippe Chassé

Exploiting the recent work of Tao and Ziegler on a concatenation theorem on factors, we find explicit characteristic factors for multiple averages along polynomials on systems with commuting transformations, and use them to study criteria…

动力系统 · 数学 2023-02-06 Sebastián Donoso , Andreas Koutsogiannis , Wenbo Sun

We demonstrate $k+1$-term arithmetic progressions in certain subsets of the real line whose "higher-order Fourier dimension" is sufficiently close to 1. This Fourier dimension, introduced in previous work, is a higher-order (in the sense of…

经典分析与常微分方程 · 数学 2015-01-20 Marc Carnovale

We prove that, under certain conditions on the function pair $\varphi_1$ and $\varphi_2$, bilinear average $p^{-1}\sum_{y\in \mathbb{F}_p}f_1(x+\varphi_1(y)) f_2(x+\varphi_2(y))$ along curve $(\varphi_1, \varphi_2)$ satisfies certain decay…

数论 · 数学 2017-10-03 Dong Dong , Xiaochun Li , Will Sawin

We prove sharp estimates on the time-average behavior of the squared absolute value of the Fourier transform of some absolutely continuous measures that may have power-law singularities, in the sense that their Radon-Nikodym derivatives…

谱理论 · 数学 2022-05-17 M. Aloisio , S. L. de Carvalho , C. R. de Oliveira , E. Souza

The paper proves that a bound on the averaged Jones' square function of a measure implies an upper bound on the measure. Various types of assumptions on the measure are considered. The theorem is a generalization of a result due to A. Naber…

经典分析与常微分方程 · 数学 2018-06-12 M. Miśkiewicz

Grokking, referring to the abrupt improvement in test accuracy after extended overfitting, offers valuable insights into the mechanisms of model generalization. Existing researches based on progress measures imply that grokking relies on…

机器学习 · 计算机科学 2025-04-15 Zihan Gu , Ruoyu Chen , Hua Zhang , Yue Hu , Xiaochun Cao

We consider a class of piecewise smooth one-dimensional maps with critical points and singularities (possibly with infinite derivative). Under mild summability conditions on the growth of the derivative on critical orbits, we prove the…

动力系统 · 数学 2015-05-30 Stefano Luzzatto , Ian Melbourne

This paper is about equality of proofs in which a binary predicate formalizing properties of equality occurs, besides conjunction and the constant true proposition. The properties of equality in question are those of a preordering relation,…

逻辑 · 数学 2016-04-19 K. Dosen , Z. Petric

Normal bases and self-dual normal bases over finite fields have been found to be very useful in many fast arithmetic computations. It is well-known that there exists a self-dual normal basis of $\mathbb{F}_{2^n}$ over $\mathbb{F}_2$ if and…

数论 · 数学 2013-03-12 Xiyong Zhang , Rongquan Feng , Qunying Liao , Xuhong Gao

In this paper, we define the asymptotic stable division property for submodules of the Bergman module. We show that under a mild condition, a submodule with the asymptotic stable division property is p-essentially normal for all p>n. A new…

泛函分析 · 数学 2019-06-19 Yi Wang

In this paper, we apply Devroye inequality to study various statistical estimators and fluctuations of observables for processes. Most of these observables are suggested by dynamical systems. These applications concern the co-variance…

动力系统 · 数学 2009-11-10 J. -R. Chazottes , P. Collet , B. Schmitt

We introduce a new notion of "regularity structure" that provides an algebraic framework allowing to describe functions and / or distributions via a kind of "jet" or local Taylor expansion around each point. The main novel idea is to…

偏微分方程分析 · 数学 2015-06-15 Martin Hairer

The main result of this paper supports a conjecture by C. P\'erez and E. Rela about a very recent result of theirs on self-improving theory. Also, we extend the conclusions of their theorem to the range $p<1$. As an application of our…

经典分析与常微分方程 · 数学 2019-07-30 Javier C. Martínez-Perales

We develop sufficient analytic conditions for recurrence and transience of non-sectorial perturbations of possibly non-symmetric Dirichlet forms on a general state space. These form an important subclass of generalized Dirichlet forms which…

概率论 · 数学 2017-10-10 Minjung Gim , Gerald Trutnau

Nourdin et al. [9] established the following universality result: if a sequence of off-diagonal homogeneous polynomial forms in i.i.d. standard normal random variables converges in distribution to a normal, then the convergence also holds…

概率论 · 数学 2015-05-15 Shuyang Bai , Murad S. Taqqu

Let G be a finite graph with the non-k-order property (essentially, a uniform finite bound on the size of an induced sub-half-graph). A major result of the paper applies model-theoretic arguments to obtain a stronger version of…

逻辑 · 数学 2015-08-20 M. Malliaris , S. Shelah

The random Fourier features (RFFs) method is a powerful and popular technique in kernel approximation for scalability of kernel methods. The theoretical foundation of RFFs is based on the Bochner theorem that relates symmetric, positive…

机器学习 · 计算机科学 2022-09-20 Mingzhen He , Fan He , Fanghui Liu , Xiaolin Huang