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The presence of a cosmological constant, Lambda, in an action with higher powers of the curvature can produce rapidly oscillating metrics. We develop a perturbative approach for generating periodic solutions to the non-linear field…

高能物理 - 理论 · 物理学 2009-11-07 Hael Collins , Bob Holdom

We prove that the classical Laplace asymptotic expansion (AE) of $\int_{\mathbb R^d} g(x)e^{-nu(x)}dx$, $n\gg1$ extends to the high-dimensional regime in which $d$ may grow large with $n$. More specifically, we use new techniques suitable…

经典分析与常微分方程 · 数学 2025-06-13 Anya Katsevich

The aim of this note is to investigate the asymptotic stability behaviour of the Cauchy and Jensen functional equations. Our main results show that if these equations hold for large arguments with small error, then they are also valid…

经典分析与常微分方程 · 数学 2017-06-29 Anna Bahyrycz , Zsolt Páles , Magdalena Piszczek

The positivity of the Bondi mass has been proven in 4 dimensions, but in higher dimensions the issue remains open. The formalism of the present paper has been developed to investigate this and is well suited to the higher dimensional case.…

广义相对论与量子宇宙学 · 物理学 2013-07-24 Alex Thorne

We show that the asymptotic dimension of a geodesic space that is homeomorphic to a subset in the plane is at most three. In particular, the asymptotic dimension of the plane and any planar graph is at most three.

度量几何 · 数学 2021-07-09 Koji Fujiwara , Panos Papasoglu

Fix positive integers $a$ and $b$ such that $a> b\geq 2$ and a positive real $\delta>0$. Let $S$ be a planar set of diameter $\delta$ having the following property: for every $a$ points in $S$, at least $b$ of them have pairwise distances…

计算几何 · 计算机科学 2015-08-05 Christos Pelekis

An upper bound for the Lebesgue constant (the supremum norm) of the operator of interpolation of a function in equally spaced points of a triangle by a polynomial of total degree less than or equal to n is obtained. Earlier, the rate of…

数值分析 · 数学 2022-09-22 N Baidakova

The paper considers a universal approach that allows one to quite simply obtain nonlinear asymptotic estimates of various summation functions. It is shown the application of this approach to the asymptotic estimation of divergent Dirichlet…

数论 · 数学 2023-11-02 Victor Volfson

The novelty of our paper is to establish results on asymptotic stability of mild solutions in $p$th moment to Riemann-Liouville fractional stochastic neutral differential equations (for short Riemann-Liouville FSNDEs) of order $\alpha \in…

概率论 · 数学 2021-09-27 Arzu Ahmadova , Nazim Mahmudov

Asymptotic formula is derived for the behavior of the fundamental solution of the second-order elliptic self-adjoint operator with a piecewise-smooth coefficient in front of the senior derivatives near the discontinuity surface of the…

数学物理 · 物理学 2007-05-23 A. G. Ramm

We prove that the isoperimetric constant is positive for all symmetric spaces of noncompact type and compute it explicitly.

微分几何 · 数学 2013-08-16 Xiaodong Wang

We establish two precise asymptotic results on the Birkhoff sums for dynamical systems. These results are parallel to that on the arithmetic sums of independent and identically distributed random variables previously obtained by Hsu and…

动力系统 · 数学 2021-10-27 Lulu Fang , Hiroki Takahasi , Yiwei Zhang

The purpose of this paper is to describe asymptotic formulas for determinants of a sum of finite Toeplitz and Hankel matrices with singular generating functions. The formulas are similar to those of the analogous problem for finite Toeplitz…

泛函分析 · 数学 2007-05-23 Estelle L. Basor , Torsten Ehrhardt

We show how bilateral, linear, elastic foundations (i.e. Winkler foundations) often regarded as heuristic, phenomenological models, emerge asymptotically from standard, linear, three-dimensional elasticity. We study the parametric…

数学物理 · 物理学 2014-10-03 Andrés A León Baldelli , Blaise Bourdin

We study asymptotic symmetry algebras for classes of three dimensional supergravities with and without cosmological constant. In the first part we generalise some of the non-Dirichlet boundary conditions of $AdS_3$ gravity to extended…

高能物理 - 理论 · 物理学 2018-09-05 Rohan R. Poojary , Nemani V. Suryanarayana

We give a general geometric definition of asymptotic flatness at null infinity in $d$-dimensional general relativity ($d$ even) within the framework of conformal infinity. Our definition is arrived at via an analysis of linear perturbations…

广义相对论与量子宇宙学 · 物理学 2014-11-17 Stefan Hollands , Akihiro Ishibashi

To analyze the absolute condition number of multivariate polynomial interpolation on Lissajous-Chebyshev node points, we derive upper and lower bounds for the respective Lebesgue constant. The proof is based on a relation between the…

数值分析 · 数学 2017-11-13 Peter Dencker , Wolfgang Erb , Yurii Kolomoitsev , Tetiana Lomako

In this paper, we study the $L^p$-asymptotic stability of the one-dimensional linear damped wave equation with Dirichlet boundary conditions in $[0,1]$, with $p\in (1,\infty)$. The damping term is assumed to be linear and localized to an…

偏微分方程分析 · 数学 2021-04-13 Meryem Kafnemer , Mebkhout Benmiloud , Frédéric Jean , Yacine Chitour

We consider the eigenvalues of the Dirichlet and Neumann Laplacians on a bounded domain with Lipschitz boundary and prove two-term asymptotics for their Riesz means of arbitrary positive order. Moreover, when the underlying domain is…

谱理论 · 数学 2025-08-11 Rupert L. Frank , Simon Larson

We consider the Schr\"{o}dinger equation $(i\partial_t+\Delta)u=0$ on an $n$-dimensional simplex with Dirichlet boundary conditions. We use a commutator argument along with integration by parts to obtain an observability asymptotic for any…

偏微分方程分析 · 数学 2020-05-25 Sarah Carpenter , Hans Christianson