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The power of the disconjugacy properties of second-order differential equations of Schr\"odinger type to check the regularity of rationally-extended quantum potentials connected with exceptional orthogonal polynomials is illustrated by…

数学物理 · 物理学 2012-12-11 Yves Grandati , Christiane Quesne

The global existence of bounded weak solutions to a diffusion system modeling biofilm growth is proven. The equations consist of a reaction-diffusion equation for the substrate concentration and a fourth-order Cahn-Hilliard-type equation…

偏微分方程分析 · 数学 2023-07-20 Christoph Helmer , Ansgar Jüngel

We study the nonlocal-to-local convergence for a nonlocal Cahn-Hilliard equation with anisotropic and singular kernels. In particular, we show convergence of weak solutions of the nonlocal Cahn-Hilliard equation to weak solutions of a…

偏微分方程分析 · 数学 2025-12-02 Helmut Abels , Yutaka Terasawa

We establish the $L^2$-solvability of Dirichlet, Neumann and regularity problems for divergence-form heat (or diffusion) equations with H\"older-continuous diffusion coefficients, on bounded Lipschitz domains in $\mathbb{R}^n$. This is…

偏微分方程分析 · 数学 2023-10-25 Alejandro J. Castro , Salvador Rodríguez-López , Wolfgang Staubach

We give a unified proof of H\"{o}lder regularity of weak solutions for mixed local and nonlocal $p$-Laplace type parabolic equations with the full range of exponents $1<p<\infty$. Our proof is based on the expansion of positivity together…

偏微分方程分析 · 数学 2022-07-01 Bin Shang , Chao Zhang

We study a class of nonlocal reaction-diffusion equations with a harvesting term where the nonlocal operator is given by a Bernstein function of the Laplacian. In particular, it includes the fractional Laplacian, fractional relativistic…

偏微分方程分析 · 数学 2020-11-10 Anup Biswas , Mitesh Modasiya

The aim of this paper is to study the well-posedness and the existence of global attractors for a family of Cahn-Hilliard equations with a mobility depending on the chemical potential. Such models arise from generalizations of the…

偏微分方程分析 · 数学 2010-04-05 Maurizio Grasselli , Alain Miranville , Riccarda Rossi , Giulio Schimperna

In this paper we investigate a non-linear and non-local one dimensional transport equation under random perturbations on the real line. We first establish a local-in-time theory, i.e., existence, uniqueness and blow-up criterion for…

偏微分方程分析 · 数学 2022-03-23 Diego Alonso-Orán , Yingting Miao , Hao Tang

We study an initial value problem with fractional Laplacian and a singular drift term, and obtain local and global existence theorems similar to the results in Jourdain et al.(2005).

偏微分方程分析 · 数学 2021-03-22 Yingdong Lu

We consider a class of bulk-surface coupled Cahn-Hilliard systems in a smooth, bounded domain $\Omega\subset\mathbb{R}^{d}$ $(d\in\{2,3\})$, where the trace value of the bulk phase variable is connected to the surface phase variable via a…

偏微分方程分析 · 数学 2024-07-03 Maoyin Lv , Hao Wu

We study the large time behaviour of the reaction-diffsuion equation $\partial_t u=\Delta u +f(u)$ in spatial dimension $N$, when the nonlinear term is bistable and the initial datum is compactly supported. We prove the existence of a…

偏微分方程分析 · 数学 2021-01-20 Jean-Michel Roquejoffre , Violaine Roussier-Michom

We start presenting an $L^{\infty}$-gradient bound for solutions to non-homogeneous $p$-Laplacean type systems and equations, via suitable non-linear potentials of the right hand side. Such a bound implies a Lorentz space characterization…

偏微分方程分析 · 数学 2015-05-14 Frank Duzaar , Giuseppe Mingione

We investigate traveling wave solutions for a nonlinear system of two coupled reaction-diffusion equations characterized by double degenerate diffusivity: \[n_t= -f(n,b), \quad b_t=[g(n)h(b)b_x]_x+f(n,b).\] These systems mainly appear in…

偏微分方程分析 · 数学 2024-04-30 Eduardo Muñoz-Hernández , Elisa Sovrano , Valentina Taddei

We study the asymptotic properties of the stochastic Cahn-Hilliard equation with the logarithmic free energy by establishing different dimension-free Harnack inequalities according to various kinds of noises. The main characteristics of…

偏微分方程分析 · 数学 2021-01-14 Ludovic Goudenège , Bin Xie

Existence of solutions to an obstacle $p$-Laplacian problem exhibiting a singular, discontinuous reaction is proved. The reaction term may be discontinuous in a Lebesgue-negligible set. Moreover, solutions are shown to be locally…

偏微分方程分析 · 数学 2026-05-05 Annamaria Barbagallo , Umberto Guarnotta

We consider a stochastic partial differential equation with a logarithmic nonlinearity with singularities at $1$ and $-1$ and a constraint of conservation of the space average. The equation, driven by a trace-class space-time noise,…

概率论 · 数学 2019-10-21 Ludovic Goudenège , Luigi Manca

We study regularity properties for solutions to the nakedly degenerate elliptic equation $a_{ij}\partial_{ij}u =0$, where the coefficients satisfy $I \ge a_{ij}(x) \ge \lambda(x) I$ and the only assumption is that $\lambda^{-1} \in L^p$. We…

偏微分方程分析 · 数学 2026-04-16 David Bowman

We prove local H\"older regularity for bounded and sign-changing weak solutions to nonlocal Trudinger equations of the form \[ (|u|^{p-2}u)_t + \text{P.V.} \int_{\mathbb{R}^n} \frac{|u(x,t) - u(y,t)|^{p-2}(u(x,t)-u(y,t))}{|x-y|^{n+sp}} = 0,…

偏微分方程分析 · 数学 2025-03-11 Karthik Adimurthi

We prove that local weak solutions to nonlocal parabolic $p$-Laplace equations are locally Lipschitz continuous in space, uniformly in time for every $1<p<\infty$ and $s \in (0,1)$ whenever $sp > p-1$. Our results hold for symmetric,…

偏微分方程分析 · 数学 2026-03-24 Harsh Prasad

The non-local degenerate Cahn-Hilliard equation is derived from the Vlasov equation with long-range attraction. We study the local limit as the delocalization parameter converges to 0. The difficulty arises from the degeneracy which…

偏微分方程分析 · 数学 2023-06-13 Charles Elbar , Benoît Perthame , Jakub Skrzeczkowski