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This paper addresses the problem of finding an asymptotic solution for first and second order integro-differential equations containing an arbitrary kernel, by evaluating the corresponding inverse Laplace and Fourier transforms. The aim of…

Statistical Mechanics · Physics 2010-08-03 Mauro Bologna

We consider the elasticity operator with zero Poisson's ratio on an infinite strip and an infinite plate with a horizontal crack. We prove an asymptotic formula for the distance of the embedded eigenvalues to some spectral threshold of the…

Spectral Theory · Mathematics 2015-11-20 André Hänel , Timo Weidl

We consider the gap probability for the Bessel process in the single-time and multi-time case. We prove that the scalar and matrix Fredholm determinants of such process can be expressed in terms of determinants of integrable kernels \`a la…

Mathematical Physics · Physics 2013-07-04 Manuela Girotti

A perturbation decaying to 0 at infinity and not too irregular at 0 introduces at most a discrete set of eigenvalues into the spectral gaps of a one-dimensional Dirac operator on the half-line. We show that the number of these eigenvalues…

Spectral Theory · Mathematics 2007-05-23 Karl Michael Schmidt

We study the distribution of the largest eigenvalue in formal Hermitian one-matrix models at multicriticality, where the spectral density acquires an extra number of k-1 zeros at the edge. The distributions are directly expressed through…

Mathematical Physics · Physics 2012-12-18 Gernot Akemann , Max R. Atkin

The $J$-matrix method is extended to difference and $q$-difference operators and is applied to several explicit differential, difference, $q$-difference and second order Askey-Wilson type operators. The spectrum and the spectral measures…

Classical Analysis and ODEs · Mathematics 2014-04-17 Mourad E. H. Ismail , Erik Koelink

The distributions of the $k$-th largest level at the soft edge scaling limit of Gaussian ensembles are some of the most important distributions in random matrix theory, and their numerical evaluation is a subject of great practical…

Numerical Analysis · Mathematics 2022-06-20 Zewen Shen , Kirill Serkh

In this paper, we enlarge the space of uniformly supported pseudo-differential operators on some groupoids by considering kernels satisfying certain asymptotic estimates. We show that such enlarged space contains the compact parametrix, and…

Analysis of PDEs · Mathematics 2013-02-28 Bing Kwan So

In this note we compute the functional derivative of the induced charge density, on a thin conductor, consisting of the union of g+1 disjoint intervals, $J:=\cup_{j=1}^{g+1}(a_j,b_j),$ with respect to an external potential. In the context…

Mathematical Physics · Physics 2009-11-07 Y. Chen , T. Grava

We compute the Fredholm index, ${\rm ind}(D_A)$, of the operator $D_A = (d/dt) + A$ on $L^2(\mathbb{R};\mathcal{H})$ associated with the operator path $\{A(t)\}_{t=-\infty}^{\infty}$, where $(A f)(t) = A(t) f(t)$ for a.e. $t\in\mathbb{R}$,…

Spectral Theory · Mathematics 2015-03-03 Fritz Gesztesy , Yuri Latushkin , Konstantin A. Makarov , Fedor Sukochev , Yuri Tomilov

We will discuss the asymptotic behaviour of the eigenvalues of Schr\"{o}dinger operator with a matrix potential defined by Neumann boundary condition in $L_2^m(F)$, where $F$ is $d$-dimensional rectangle and the potential is a $m \times m$…

Spectral Theory · Mathematics 2015-05-20 Sedef Karakılıç , Setenay Akduman , Didem Coşkan

We derive two distinct asymptotic expansions for the zeros $j_{\nu,k}^{(n)}$ of the $n$-th derivative of Bessel function $J_\nu^{(n)}(x)$. The first is a McMahon-type expansion for the case when $k \to \infty$ with fixed $\nu$, for which we…

Classical Analysis and ODEs · Mathematics 2025-10-15 Árpád Baricz , Pranav Kumar , Saminathan Ponnusamy

We consider the problem of embedding eigenvalues into the essential spectrum of periodic Jacobi operators, using an oscillating, decreasing potential. To do this we employ a geometric method, previously used to embed eigenvalues into the…

Spectral Theory · Mathematics 2020-10-28 Edmund Judge , Sergey Naboko , Ian Wood

Two-term Weyl-type asymptotic law for the eigenvalues of one-dimensional fractional Laplace operator (-d^2/dx^2)^(alpha/2) (0 < alpha < 2) in the interval (-1,1) is given: the n-th eigenvalue is equal to (n pi/2 - (2 - alpha) pi/8)^alpha +…

Spectral Theory · Mathematics 2010-12-07 Mateusz Kwaśnicki

We develop techniques to compute the k-th Moment of the Eigenvalue-statistic for a random Matrix M the entries of which do not have to be necessarily Independent. The dependence is controlled via an equivalence relation on the pairs of the…

Mathematical Physics · Physics 2016-05-12 Riccardo Catalano

We introduce a general method for transforming the equations of motion following from a Das-Jevicki-Sakita Hamiltonian, with boundary conditions, into a boundary value problem in one-dimensional quantum mechanics. For the particular case of…

High Energy Physics - Theory · Physics 2009-10-31 L. D. Paniak

We study the limit behavior of the Dirichlet and Neumann eigenvalue counting function of generalized second order differential operators $\frac{d}{d \mu} \frac{d}{d x}$, where $\mu$ is a finite atomless Borel measure on some compact…

Spectral Theory · Mathematics 2018-08-24 Lenon Minorics

In this paper, we prove the pointwise convergence and the rate of pointwise convergence for a family of singular integral operators in two-dimensional setting in the following form: \begin{equation*} L_{\lambda }\left( f;x,y\right)…

Functional Analysis · Mathematics 2017-01-26 Mine Menekse Yilmaz , Lakshmi Narayan Mishra , Gumrah Uysal

In this paper, we are concerned with higher-order analogues of the Tracy-Widom distribution, which describe the eigenvalue distributions in unitary random matrix models near critical edge points. The associated kernels are constructed by…

Mathematical Physics · Physics 2025-04-22 Dan Dai , Wen-Gao Long , Shuai-Xia Xu , Lu-Ming Yao , Lun Zhang

In this paper we study $L_2$-norm sampling discretization and sampling recovery of complex-valued functions in RKHS on $D \subset \R^d$ based on random function samples. We only assume the finite trace of the kernel (Hilbert-Schmidt…

Numerical Analysis · Mathematics 2021-05-03 Moritz Moeller , Tino Ullrich