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We study the Cauchy problem for a multidimensional scalar conservation law on the Bohr compactification of $\R^n$. The existence and uniqueness of entropy solutions are established in the general case of merely continuous flux vector. We…

偏微分方程分析 · 数学 2014-08-05 Evgeny Yu. Panov

Since the pioneering work of James E. Broadwell, discrete velocity models (DVMs) have played a fundamental role in approximating the Boltzmann equation and in the analysis of non-equilibrium gas dynamics. Despite their apparent simplicity,…

偏微分方程分析 · 数学 2026-04-21 Koudzo Togbévi Selom Sobah , Amah Séna D'Almeida

This article considers the spatially inhomogeneous, non-cutoff Boltzmann equation. We construct a large-data classical solution given bounded, measurable initial data with uniform polynomial decay of mild order in the velocity variable. Our…

偏微分方程分析 · 数学 2023-10-17 Christopher Henderson , Stanley Snelson , Andrei Tarfulea

A uniform approach is introduced to study the existence of measure valued solutions to the homogeneous Boltzmann equation for both hard potential with finite energy, and soft potential with finite or infinite energy, by using Toscani…

偏微分方程分析 · 数学 2016-11-23 Yoshinori Morimoto , Shuaikun Wang , Tong Yang

As for the spatially homogeneous Boltzmann equation of Maxwellian molecules with the fractional Fokker-Planck diffusion term, we consider the Cauchy problem for its Fourier-transformed version, which can be viewed as a kinetic model for the…

偏微分方程分析 · 数学 2015-10-30 Yong-Kum Cho

In this paper, we revisit the Cauchy problem for the three dimensional nonlinear Schr\"odinger equation with a constant magnetic field. We first establish sufficient conditions that ensure the existence of global in time and finite time…

偏微分方程分析 · 数学 2022-01-11 Van Duong Dinh

We consider the Cauchy problem for the spatially inhomogeneous non-cutoff Boltzmann equation with polynomially decaying initial data in the velocity variable. We establish short-time existence for any initial data with this decay in a fifth…

偏微分方程分析 · 数学 2020-03-11 Christopher Henderson , Stanley Snelson , Andrei Tarfulea

This paper considers a system of Boltzmann equations modelling the mixture of monatomic and polyatomic gases in an $L^{2}-L^{\infty}$ perturbation theory around global modified Maxwellians accounting for the internal energy of the mixture…

偏微分方程分析 · 数学 2025-11-20 Ricardo Alonso , Zongguang Li

In this work, we investigate the dynamics of an inhomogeneous coupled nonlinear Schrodinger system with quadratic-type interactions. Such systems arise naturally in nonlinear dynamics and mathematical physics, particularly in nonlinear…

偏微分方程分析 · 数学 2026-03-10 Mykael Cardoso , Lázaro Gil

We establish the existence of solutions of the 2D incompressible non-homogeneous Euler equations with $C^{0}_{t}C^{1,\,\sqrt{\frac{4}{3}}-1-\varepsilon}_{x}\cap C^{0}_{t}L^{2}_{x}$ source terms that develop a singularity in finite time. In…

偏微分方程分析 · 数学 2026-05-29 Diego Córdoba , Andrés Laín-Sanclemente , Luis Martínez-Zoroa

We derive a system of nonpolynomial Schroedinger equations (NPSEs) for one-dimensional wave functions of two components in a binary self-attractive Bose-Einstein condensate loaded in a cigar-shaped trap. The system is obtained by means of…

其他凝聚态物理 · 物理学 2009-11-11 Luca Salasnich , Boris A. Malomed

In this paper, we study the Cauchy problem for the focusing inhomogeneous nonlinear Schr\"{o}dinger equation with inverse-square potential \[iu_{t} +\Delta u-c|x|^{-2}u+|x|^{-b} |u|^{\sigma } u=0,\; u(0)=u_{0} \in H_{c}^{1},\;(t,x)\in…

偏微分方程分析 · 数学 2021-09-21 JinMyong An , JinMyong Kim , RoeSong Jang

An effort has been made to solve the Cauchy problem of the Navier-Stokes equations in the whole space by two methods. It is proved that the sum of the three vorticity components is a time-invariant in fluid motion. It has been proved that,…

流体动力学 · 物理学 2014-09-18 F. Lam

This work is devoted to the study of a class of linear time-inhomogeneous evolution equations in a scale of Banach spaces. Existence, uniquenss and stability for classical solutions is provided. We study also the associated dual Cauchy…

泛函分析 · 数学 2022-03-17 Martin Friesen

In previous work, black hole vortex solutions in Einstein gravity with AdS$_3$ background were found where the scalar matter profile had a singularity at the origin $r=0$. In this paper, we find numerically static vortex solutions where the…

高能物理 - 理论 · 物理学 2021-02-11 Ariel Edery

We develop the Cauchy theory of the spatially homogeneous inelastic Boltzmann equation for hard spheres, for a general form of collision rate which includes in particular variable restitution coefficients depending on the kinetic energy and…

偏微分方程分析 · 数学 2016-08-16 Stéphane Mischler , Clément Mouhot , Mariano Rodriguez Ricard

A system of singular integral equations with monotone and concave nonlinearity in the subcritical case is investigated. The specified system and its scalar analog have direct applications in various areas of physics and biology. In…

泛函分析 · 数学 2024-10-28 A. Kh. Khachatryan , Kh. A. Khachatryan , H. S. Petrosyan

This paper is to study the inelastic Boltzmann equation without Grad's angular cutoff assumption, where the well-posedness theory of the solution to the initial value problem is established for the Maxwellian molecules in a space of…

数学物理 · 物理学 2024-06-19 Kunlun Qi

We consider the existence of steady rarefied flows of polyatomic gas between two parallel condensed phases, where evaporation and condensation processes occur. To this end, we study the existence problem of stationary solutions in a…

偏微分方程分析 · 数学 2025-03-18 Ki-Nam Hong , Marwa Shahine , Seok-Bae Yun

The purpose of this paper is to study stochastic evolution inclusions of the form \begin{align*} \eta(t,z) N_{\Theta}(dt \otimes z)\in dX(t)+\mathcal{A} X(t)dt, \end{align*} where $\mathcal{A}$ is a multi-valued operator acting on a…

概率论 · 数学 2017-10-06 Alexander Nerlich