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In this paper, we study existence of boundary blow-up solutions for elliptic equations involving regional fractional Laplacian. We also discuss the optimality of our results.

偏微分方程分析 · 数学 2016-02-10 H. Chen , H. Hajaiej

Using a conjecture that allows to approach separable-variables conductivity functions, the elements of the Modern Pseudoanalytic Function Theory are used, for the first time, to numerically solve the Dirichlet boundary value problem of the…

数学物理 · 物理学 2012-02-23 M. P. Ramirez T

We initiate the study of noncharacteristic boundary layers in hyperbolic-parabolic problems with Neumann boundary conditions. More generally, we study boundary layers with mixed Dirichlet--Neumann boundary conditions where the number of…

偏微分方程分析 · 数学 2012-07-31 Olivier Gues , Guy Metivier , Mark Williams , Kevin Zumbrun

We consider a nonlinear heat equation with a gradient term. We construct a blow-up solution for this equation with a prescribed blow-up profile. For that, we translate the question in selfsimilar variables and reduce the problem to a finite…

偏微分方程分析 · 数学 2011-03-01 Mohammed Abderrahman Ebde , Hatem Zaag

The authors of this paper study singular phenomena(vanishing and blowing-up in finite time) of solutions to the homogeneous $\hbox{Dirichlet}$ boundary value problem of nonlinear diffusion equations involving $p(x)$-\hbox{Laplacian}…

偏微分方程分析 · 数学 2013-08-13 Bin Guo , Wenjie Gao

In this paper we consider initial boundary value problem for a parabolic equation with nonlinear memory and absorption under nonlinear nonlocal boundary condition. We prove global existence and blow-up of solutions.

偏微分方程分析 · 数学 2024-02-21 Alexander Gladkov

We demonstrate how the solution to an exterior Dirichlet boundary value problem of the axisymmetric, stationary Einstein equations can be found in terms of generalized solutions of the Backlund type. The proof that this generalization…

广义相对论与量子宇宙学 · 物理学 2016-08-16 Marcus Ansorg , Andreas Kleinwächter , Reinhard Meinel , Gernot Neugebauer

We consider the Hardy-H\'enon parabolic equation $u_t-\Delta u =|x|^a |u|^{p-1}u$ with $p>1$ and $a\in {\mathbb R}$. We establish the space-time singularity and decay estimates, and Liouville-type theorems for radial and nonradial…

偏微分方程分析 · 数学 2012-10-30 Quoc Hung Phan

In the junction $\Omega$ of several semi-infinite cylindrical waveguides we consider the Dirichlet Laplacian whose continuous spectrum is the ray $[\lambda_\dagger, +\infty)$ with a positive cut-off value $\lambda_\dagger$. We give two…

谱理论 · 数学 2017-12-08 Fedor L. Bakharev , Sergei A. Nazarov

We study existence and uniqueness of solutions for second order ordinary stochastic differential equations with Dirichlet boundary conditions on a given interval. In the first part of the paper we provide sufficient conditions to ensure…

经典分析与常微分方程 · 数学 2009-10-16 Anna Capietto , Enrico Priola

We consider the semilinear heat equation, to which we add a nonlinear gradient term, with a critical power. We construct a solution which blows up in finite time. We also give a sharp description of its blow-up profile. The proof relies on…

偏微分方程分析 · 数学 2016-10-06 Slim Tayachi , Hatem Zaag

We study the boundary regularity of solutions to the porous medium equation $u_t = \Delta u^m$ in the degenerate range $m>1$. In particular, we show that in cylinders the Dirichlet problem with positive continuous boundary data on the…

偏微分方程分析 · 数学 2020-06-05 Anders Björn , Jana Björn , Ugo Gianazza , Juhana Siljander

It has been established that solutions to the inviscid Proudman-Johnson equation subject to a homogeneous three-point boundary condition can develop singularities in finite time. In this paper, we consider the possibility of singularity…

偏微分方程分析 · 数学 2025-06-26 Ikechukwu Obi-Okoye , Alejandro Sarria

We consider the inhomogeneous Dirichlet problem on product domains. The main result is the asymptotic expansion of the solution in terms of increasing smoothness up to the boundary. In particular, we show the exact nature of the…

偏微分方程分析 · 数学 2009-03-24 Dariush Ehsani

In this paper we will see that the global or local existence of solutions to \begin{eqnarray*} \dfrac{\partial u_{1}}{\partial t} & = & \mathit{k}_{1} (t) \Delta u_{1} + h_{1}(t) u_{1}^{p_{11}} u_{2}^{p_{12}},\\ \dfrac{\partial…

偏微分方程分析 · 数学 2019-04-16 Gabriela de Jesús Cabral-García , José Villa-Morales

In this paper, we study the exterior problem for the maximal surface equation. We obtain the precise asymptotic behavior of the exterior solution at infinity. And we prove that the exterior Dirichlet problem is uniquely solvable given…

偏微分方程分析 · 数学 2020-01-17 Guanghao Hong , Yu Yuan

In this work, we consider the Dirichlet boundary value problem for nonlinear triharmonic equation. Due to the reduction of the nonlinear boundary value problem to operator equation for the nonlinear term and the unknown second normal…

数值分析 · 数学 2020-07-08 Dang Quang A , Nguyen Quoc Hung , Vu Vinh Quang

We consider variational problems with regular H{\"o}lderian weight or boundary singularity, and Dirichlet condition. We prove the boundedness of the volume of the solutions to these equations on analytic domains.

偏微分方程分析 · 数学 2023-08-02 Samy Skander Bahoura

In this work we obtain sufficient conditions for the existence of bounded solutions of a resonant multi-point second-order boundary value problem, with a fully differential equation. The noninvertibility of the linear part is overcome by a…

经典分析与常微分方程 · 数学 2018-11-16 Lucía López-Somoza , Feliz Minhós

In this article, the authors survey and review the studies of boundary value problems for regular functions in Clifford analysis, which include theoretical foundations and useful methods. Its theoretical bases consist of the generalized…

复变函数 · 数学 2025-09-16 J. Y. Du , P. Dang