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We investigate the Cauchy problem of three-dimensional compressible non-isothermal nematic liquid crystal flows in $\mathbb{R}^3$. We derive the global existence and uniqueness of strong solutions with both interior and far field vacuum…

偏微分方程分析 · 数学 2021-08-24 Yang Liu , Xin Zhong

We consider a wave equation with a nonlocal logarithmic damping depending on a small parameter $\theta \in (0,1/2)$. This research is a counter part of that was initiated by Charao-D'Abbicco-Ikehata considered in [5] for the large parameter…

偏微分方程分析 · 数学 2021-09-27 Alessandra Piske , Ruy Coimbra Charão , Ryo Ikehata

In this work we propose a nonlinear stabilization technique for convection-diffusion-reaction and pure transport problems discretized with space-time isogeometric analysis. The stabilization is based on a graph-theoretic artificial…

数值分析 · 计算机科学 2019-11-18 Jesús Bonilla , Santiago Badia

This paper is concerned with a general class of fully nonlinear parabolic equations with monotone nonlocal terms. We investigate the quasiconvexity preserving property of positive, spatially coercive viscosity solutions. We prove that if…

偏微分方程分析 · 数学 2022-05-03 Takashi Kagaya , Qing Liu , Hiroyoshi Mitake

In this paper we study a nonlocal reaction-diffusion equation in which the diffusion depends on the gradient of the solution. We prove first the existence and uniqueness of regular and strong solutions. Second, we obtain the existence of…

动力系统 · 数学 2026-02-27 Rubén Caballero , Pedro Marín-Rubio , José Valero

It is shown that if the initial condition of the Cauchy problem for the diffusion equation on a general infinite countable ultrametric space is spherically symmetric with respect to some point, then this problem has an exact analytical…

数学物理 · 物理学 2024-08-05 A. Kh. Bikulov , A. P. Zubarev

We study the effect of a viscous dissipation on the Cauchy problem for a Cattaneo-type model in nonlinear acoustics, established by applying the Lighthill approximation for the viscous or inviscid fluid model. The contribution of this paper…

偏微分方程分析 · 数学 2023-08-15 Wenhui Chen , Yan Liu , Alessandro Palmieri , Xulong Qin

This paper is devoted to kinetic equations without confinement. We investigate the large time behaviour induced by collision operators with fat tailed local equilibria. Such operators have an anomalous diffusion limit. In the appropriate…

偏微分方程分析 · 数学 2024-01-12 Emeric Bouin , Jean Dolbeault , Laurent Lafleche

We consider a porous medium equation with nonlocal diffusion effects given by an inverse fractional Laplacian operator. In a previous paper we have found mass-preserving, nonnegative weak solutions of the equation satisfying energy…

偏微分方程分析 · 数学 2010-04-08 Luis Caffarelli , Juan Luis Vazquez

We propose and study discontinuous Galerkin methods for strongly degenerate convection-diffusion equations perturbed by a fractional diffusion (L\'evy) operator. We prove various stability estimates along with convergence results toward…

数值分析 · 数学 2011-11-29 Simone Cifani , Espen R. Jakobsen , Kenneth H. Karlsen

Simple finite differencing of the anisotropic diffusion equation, where diffusion is only along a given direction, does not ensure that the numerically calculated heat fluxes are in the correct direction. This can lead to negative…

天体物理仪器与方法 · 物理学 2015-05-19 Prateek Sharma , Gregory W. Hammett

In this paper we consider a subcritical model that involves nonlocal diffusion and a classical convective term. In spite of the nonlocal diffusion, we obtain an Oleinik type estimate similar to the case when the diffusion is local. First we…

偏微分方程分析 · 数学 2016-10-13 C. Cazacu , L. Ignat , A. Pazoto

In this paper, we investigate the asymptotic behavior of solutions to the Cauchy problem for the scalar non-viscous diffusive dispersive conservation laws where the far field states are prescribed. We proved that the solution of the Cauchy…

偏微分方程分析 · 数学 2021-08-17 Natsumi Yoshida

We study the Cauchy problem for the nonlinear damped wave equation and establish the large data local well-posedness and small data global well-posedness with slowly decaying initial data. We also prove that the asymptotic profile of the…

偏微分方程分析 · 数学 2019-03-14 Masahiro Ikeda , Takahisa Inui , Yuta Wakasugi

We study the large time behavior of solutions to a non-local diffusion equation, $u_t=J*u-u$ with $J$ smooth, radially symmetric and compactly supported, posed in $\mathbb{R}_+$ with zero Dirichlet boundary conditions. In sets of the form…

偏微分方程分析 · 数学 2013-08-23 Carmen Cortazar , Manuel Elgueta , Fernando Quiros , Noemi Wolanski

We analyze the well-posedness of an anisotropic, nonlocal diffusion equation. Establishing an equivalence between weighted and unweighted anisotropic nonlocal diffusion operators in the vein of unified nonlocal vector calculus, we apply our…

偏微分方程分析 · 数学 2021-01-13 Marta D'Elia , Mamikon Gulian

The behaviour is investigated of solutions to a diffusion equation on the real line with nonlocal and singular reaction term, i.e., given by a Dirac source or sink at the origin. It gives a simplified representation of for example a control…

偏微分方程分析 · 数学 2026-05-19 Xiao Yang , Qiyao Peng , Sander C. Hille

We study the homogeneous Cauchy-Dirichlet Problem (CDP) for a nonlinear and nonlocal diffusion equation of singular type of the form $\partial_t u =-\mathcal{L} u^m$ posed on a bounded Euclidean domain $\Omega\subset\mathbb{R}^N$ with…

偏微分方程分析 · 数学 2022-08-01 Matteo Bonforte , Peio Ibarrondo , Mikel Ispizua

This work studies nonnegative solutions for the Cauchy, Neumann, and Dirichlet problems of a logistic type reaction-diffusion equation. The finite time blowup results for nonnegative solutions under various restrictions on the coefficients…

偏微分方程分析 · 数学 2007-05-23 Chu-Pin Lo

We study the blow-up question for the diffusion equation involving a nonlocal derivative in time defined by convolution with a nonnegative and nonincreasing kernel, and a nonlocal operator in space driven by a nonnegative radial L\'evy…

偏微分方程分析 · 数学 2024-06-21 Raúl Ferreira , Arturo de Pablo