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We demonstrate that the commonly known concept, which treats solitons as nonsingular solutions produced by the interplay of nonlinear self-attraction and linear dispersion, may be extended to include modes with a relatively weak singularity…

斑图形成与孤子 · 物理学 2020-02-19 Hidetsugu Sakaguchi , Boris A. Malomed

We study a class of (conservative) low regularity solutions to the Camassa-Holm equation on the line by exploiting the classical moment problem (in the framework of generalized indefinite strings) to develop the inverse spectral transform…

偏微分方程分析 · 数学 2025-09-30 Xiang-Ke Chang , Jonathan Eckhardt , Aleksey Kostenko

We obtain an asymptotic formula for all moments of Dirichlet $L$-functions $L(1,\chi)$ modulo $p$ when averaged over a subgroup of characters $\chi$ of size $(p-1)/d$ with $\varphi(d)=o(\log p)$. Assuming the infinitude of Mersenne primes,…

数论 · 数学 2025-02-21 Marc Munsch , Igor E. Shparlinski

We summarize significant classical results on (in)determinacy of measures in terms of their finite positive integer order moments. Well-known is the role of the smallest eigenvalues of Hankel matrices, starting from Hamburger's results a…

泛函分析 · 数学 2023-10-09 Pier Luigi Novi Inverardi , Aldo Tagliani , Jordan M. Stoyanov

The main goal of this paper is to achieve a parametrization of the solution set of the truncated matricial Hausdorff moment problem in the non-degenerate and degenerate situation. We treat the even and the odd cases simultaneously. Our…

经典分析与常微分方程 · 数学 2020-05-08 Bernd Fritzsche , Bernd Kirstein , Conrad Mädler

If a bulk gravitational path integral can be identified with an average of partition functions over an ensemble of boundary quantum theories, then a corresponding moment problem can be solved. We review existence and uniqueness criteria for…

高能物理 - 理论 · 物理学 2021-07-14 Oliver Janssen , Mehrdad Mirbabayi , Peter Zograf

We obtain strong moment invariance principles for normalized multiple iterated sums and integrals of the form $\mathbb{S}^{(\nu)}(t)=N^{-\nu/2}\sum_{0\leq k_1<...<k_\nu\leq Nt}\xi(k_1)\otimes\cdots\otimes\xi(k_\nu)$, $t\in[0,T]$ and…

概率论 · 数学 2025-02-11 Yuri Kifer

Given a multi-index sequence $\mu_{\mathbf{k}}$, $\mathbf{k} = (k_1,..., k_n) \in \mathbb{N}_0^n$, necessary and sufficient conditions are given for the existence of a regular Borel polymeasure $\gamma$ on the unit interval $I= [0,1]$ such…

泛函分析 · 数学 2012-03-15 A. Ibort , P. Linares , J. G. Llavona

In this article we consider questions related to the behavior of the moments $M_{m}\left( \left\{ z_{j}\right\} \right) $ when the indices are restricted to specific subsequences of integers, such as the even or odd moments. If $n\geq2$ we…

经典分析与常微分方程 · 数学 2023-11-07 Jiten Ahuja , Ricardo Estrada

This paper is concerned with continuous and discrete approximations of $W^{2,p}$ strong solutions of second-order linear elliptic partial differential equations (PDEs) in non-divergence form. The continuous approximation of these equations…

数值分析 · 数学 2019-02-28 Xiaobing Feng , Thomas Lewis , Stefan Schnake

In this paper, we first establish the uniqueness and non-degeneracy of positive solutions to the fractional Kirchhoff problem \begin{equation*}…

偏微分方程分析 · 数学 2022-03-16 Vicentiu D. Rădulescu , Zhipeng Yang

We define truncated Mellin moments of parton distributions by restricting the integration range over the Bjorken variable to the experimentally accessible subset x_0 < x < 1 of the allowed kinematic range 0 < x < 1. We derive the evolution…

高能物理 - 唯象学 · 物理学 2014-11-17 Stefano Forte , Lorenzo Magnea , Andrea Piccione , Giovanni Ridolfi

We write expressions connected with numerical differentiation formulas of order $2$ in the form of Stieltjes integral, then we use Ohlin lemma and Levin-Stechkin theorem to study inequalities connected with these expressions. In particular,…

经典分析与常微分方程 · 数学 2016-09-01 Tomasz Szostok

In this paper, we study some existence and uniqueness results for systems of differential equations in which each of equations of the system involves a different Stieltjes derivative. Specifically, we show that this problems can only have…

经典分析与常微分方程 · 数学 2025-01-14 Ignacio Márquez Albés , F. Adrián F. Tojo

We exploit results from the classical Stieltjes moment problem to bring out the totality of all the information regarding phase insensitive nonclassicality of a state as captured by the photon number distribution p_n. Central to our…

量子物理 · 物理学 2007-05-23 R. Simon , Mary Selvadoray , Arvind , N. Mukunda

The vanishing moment method was introduced by the authors in [37] as a reliable methodology for computing viscosity solutions of fully nonlinear second order partial differential equations (PDEs), in particular, using Galerkin-type…

数值分析 · 数学 2011-09-08 Xiaobing Feng , Michael Neilan

In the Maxwell interaction model the collision rate is independent of the relative velocity of the colliding pair and, as a consequence, the collisional moments are bilinear combinations of velocity moments of the same or lower order. In…

统计力学 · 物理学 2009-12-05 Andrés Santos

We provide several simple recursive formulae for the moment sequence of infinite Bernoulli convolution. We relate moments of one infinite Bernoulli convolution with others having different but related parameters. We give examples relating…

概率论 · 数学 2014-03-04 Paweł J. Szabłowski

We present a method for generating exact interior solutions of Einstein's equations in the case of static and axially symmetric perfect-fluid spacetimes. The method is based upon a transformation that involves the metric functions as well…

广义相对论与量子宇宙学 · 物理学 2015-06-11 Hernando Quevedo , Saken Toktarbay

We prove uniqueness of solutions to the Cauchy problem for the derivative nonlinear Schr\"odinger equation in $L^\infty_tH^{1/2}_x$. Our proof is based on the method of normal form reduction (NFR), which has been employed to obtain the…

偏微分方程分析 · 数学 2025-12-23 Nobu Kishimoto