Results 11 to 20 of about 16,079 (267)

Biharmonic problem in exterior domains

open access: yesComptes Rendus. Mathématique, 2003
We study here a biharmonic equation in an exterior domain of ℝ n . We give in L p
Amrouche, Chérif, Fontes, Mathieu
openaire   +2 more sources

Existence for semilinear equations on exterior domains

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper we study radial solutions of $\Delta u + K(r)f(u)= 0$ on the exterior of the ball of radius $R>0$ centered at the origin in ${\mathbb R}^{N}$ where $f$ is odd with $f0$ on $(\beta, \infty),$ and $f$ superlinear.
Joseph Iaia
doaj   +1 more source

The Dirichlet Problem of Hessian Equation in Exterior Domains

open access: yesMathematics, 2020
In this paper, we will obtain the existence of viscosity solutions to the exterior Dirichlet problem for Hessian equations with prescribed asymptotic behavior at infinity by the Perron’s method. This extends the Ju–Bao results on Monge–Ampère equations
Hongfei Li, Limei Dai
doaj   +1 more source

Determinants of Laplacians in Exterior Domains

open access: yes, 1999
We consider classes of simply connected planar domains which are isophasal, ie, have the same scattering phase $s(ł)$ for all $ł> 0$. This is a scattering-theoretic analogue of isospectral domains. Using the heat invariants and the determinant of the Laplacian, Osgood, Phillips and Sarnak showed that each isospectral class is sequentially compact in
Hassell, Andrew, Zelditch, Steve
openaire   +3 more sources

Asymptotic behavior of solutions of fully nonlinear equations over exterior domains

open access: yesComptes Rendus. Mathématique, 2021
In this paper, we consider the asymptotic behavior at infinity of solutions of a class of fully nonlinear elliptic equations $F(D^2u)=f(x)$ over exterior domains, where the Hessian matrix $(D^2u)$ tends to some symmetric positive definite matrix at ...
Jia, Xiaobiao
doaj   +1 more source

SOLVABILITY OF QUASILINEAR MAXWELL EQUATIONS IN EXTERIOR DOMAINS

open access: yesJournal of Applied Analysis & Computation, 2023
Summary: In this paper we consider some \(\mathrm{q}\)-curl-curl equations with lack of compactness. Our analysis is developed in the abstract setting of exterior domains. We first recall a decomposition of curl-free space based on \(L^r \)-Helmholtz-Weyl decomposition in exterior domains. Then by reducing the original system into a div-curl system and
Shen, Zifei, Zhang, Shuijin
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Multiple Positive Solutions of Semilinear Elliptic Problems in Exterior Domains

open access: yesBoundary Value Problems, 2010
Assume that is a positive continuous function in and satisfies the suitable conditions. We prove that the Dirichlet problem admits at least three positive solutions in an exterior domain.
Hsu Tsing-San, Lin Huei-Li
doaj   +2 more sources

The Landis–Oleinik conjecture in the exterior domain

open access: yesAdvances in Mathematics, 2016
In [Russ. Math. Surv. 29, No. 2, 15--212 (1974; Zbl 0305.35014)] \textit{E. M. Landis} and \textit{O. A. Olejnik} proposed the following conjecture: If \(u(x, t)\) is a bounded solution of a uniformly parabolic equation \[ \sum_{i,j=1}^n \partial_i\big(a^{ij}(x)\partial_ju\big)+ b(x)\cdot\nabla u+c(x)u-\partial_t u=0\quad \text{in }\mathbb{R}^n\times[0,
Wu, Jie, Zhang, Liqun
openaire   +1 more source

Dynamic soil-structure interaction analysis in time domain based on a modified version of perfectly matched discrete layers

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2020
Analysis of soil-structure interaction is commonly conducted by dividing the infinite domain of the soil into two domains: interior and exterior domains.
Dong Van Nguyen, Dookie Kim
doaj   +1 more source

Harmonic Liouville Theorem for Exterior Domains

open access: yesJournal of Mathematical Analysis and Applications, 2001
The authors have represented the simple function theoretic proof of a Liouville type theorem for harmonic functions in \(\mathbb{C}\). Moreover this variant of the theorem sligthly generalizes the theorem that has been obtained by F. Cammaroto and A. Chinni.
Nakai, Mitsuru, Tada, Toshimasa
openaire   +1 more source

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