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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.

Analysis of PDEs · Mathematics 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…

Mathematical Physics · Physics 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…

Analysis of PDEs · Mathematics 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…

Analysis of PDEs · Mathematics 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}…

Analysis of PDEs · Mathematics 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.

Analysis of PDEs · Mathematics 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…

General Relativity and Quantum Cosmology · Physics 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…

Analysis of PDEs · Mathematics 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…

Spectral Theory · Mathematics 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…

Classical Analysis and ODEs · Mathematics 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…

Analysis of PDEs · Mathematics 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…

Analysis of PDEs · Mathematics 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…

Analysis of PDEs · Mathematics 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…

Analysis of PDEs · Mathematics 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…

Analysis of PDEs · Mathematics 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…

Analysis of PDEs · Mathematics 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…

Numerical Analysis · Mathematics 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.

Analysis of PDEs · Mathematics 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…

Classical Analysis and ODEs · Mathematics 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…

Complex Variables · Mathematics 2025-09-16 J. Y. Du , P. Dang