Results 101 to 110 of about 3,208 (150)

A note on boundary differentiability of solutions of nondivergece elliptic equations with unbounded drift [PDF]

open access: yesarXiv, 2019
Boundary differentiability is shown for solutions of nondivergence elliptic equations with unbounded ...
arxiv  

A transmission problem for the Helmholtz equation with higher order boundary conditions

open access: yes, 2015
The present paper deals with some properties for certain classes of Wiener-Hopf operators associated with a wave diffraction problem. This diffraction problem is mathematically modeled by the Helmholtz equation and higher order boundary conditions on an ...
Alberto Simões
semanticscholar   +1 more source

Stability Of contact discontinuity for steady Euler System in infinite duct [PDF]

open access: yes, 2011
In this paper, we prove structural stability of contact discontinuities for full Euler system.
arxiv   +1 more source

Global Dynamics of Generalized Logistic Equations

open access: yesAdvanced Nonlinear Studies, 2018
We consider a parameter dependent parabolic logistic population model with diffusion and degenerate logistic term allowing for refuges for the population.
Daners Daniel, López-Gómez Julián
doaj   +1 more source

On nonlocal Choquard equations with Hardy-Littlewood-Sobolev critical exponents [PDF]

open access: yesarXiv, 2016
We consider the following nonlinear Choquard equation with Dirichlet boundary condition $$-\Delta u =\left(\int_{\Omega}\frac{|u|^{2_{\mu}^{\ast}}}{|x-y|^{\mu}}dy\right)|u|^{2_{\mu}^{\ast}-2}u+\lambda f(u)\hspace{4.14mm}\mbox{in}\hspace{1.14mm} \Omega, $$ where $\Omega$ is a smooth bounded domain of $\mathbb{R}^N$, $\lambda>0$, $N\geq3$, $0<\mu
arxiv  

Loop Type Subcontinua of Positive Solutions for Indefinite Concave-Convex Problems

open access: yesAdvanced Nonlinear Studies, 2019
We establish the existence of loop type subcontinua of nonnegative solutions for a class of concave-convex type elliptic equations with indefinite weights, under Dirichlet and Neumann boundary conditions.
Kaufmann Uriel   +2 more
doaj   +1 more source

Ambrosio-Tortorelli Approximation of Quasi-Static Evolution of Brittle Fractures [PDF]

open access: yesarXiv, 2003
We define a notion of quasi-static evolution for the elliptic approximation of the Mumford-Shah functional proposed by Ambrosio and Tortorelli. Then we prove that this regular evolution converges to a quasi-static growth of brittle fractures in linearly elastic bodies.
arxiv  

Landesman-Laser Conditions and Quasilinear Elliptic Problems [PDF]

open access: yesarXiv, 2003
In this paper we consider two elliptic problems. The first one is a Dirichlet problem while the second is Neumann. We extend all the known results concerning Landesman-Laser conditions by using the Mountain-Pass theorem with the Cerami $(PS)$ condition.
arxiv  

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