Results 291 to 300 of about 3,843,324 (325)

ON POSITIVE SOLUTIONS OF ELLIPTIC EQUATIONS

Mathematics of the USSR-Sbornik, 1971
In this paper the authors study weak solutions of elliptic equations of the form in a bounded domain . It is assumed known about these solutions either that they are positive, or that estimates in certain norms hold for their negative parts. It is assumed moreover that an estimate on the -norm of the solution holds on some subdomain .
Pletneva, T. G., Eidel'man, S. D., Kondrat'ev, V. A.   +2 more
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Positive Solution of Lighthill-Type Equations

Zeitschrift für Analysis und ihre Anwendungen, 2018
We study a unique solvability of Volterra integral equations of Lighthill’s type subject to a positive solution on [0,\infty) . Also the asymptotics of the solution at the infinity is examined.
openaire   +2 more sources

Positive Solution of Two‐Dimensional Solute Transport in Heterogeneous Aquifers

Groundwater, 2006
Abstract The transport of contaminants in aquifers is usually represented by a convection‐dispersion equation. There are several well‐known problems of oscillation and artificial dispersion that affect the numerical solution of this equation. For example, several studies have shown that standard treatment of the cross‐dispersion terms
Paulo, Herrera, Albert, Valocchi
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Positive Solutions of Quasilinear Elliptic Equations

Mathematical Notes, 2005
The author studies the existence of radially symmetric solutions of the problem \[ -\Delta_p \varphi = \lambda\varphi^q - | \nabla\varphi| ^s \quad\text{in}\quad B, \qquad \varphi > 0 \quad\text{in}\quad B, \qquad \varphi = 0 \quad\text{on}\quad \partial B, \tag \(*\) \] where \(\Delta_p\varphi = \text{div}(| \nabla\varphi| ^{p-2}\nabla\varphi)\), \(p ...
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Positive solution

2022
Conor Mc Guckin, Mary Quirke, Patricia McCarthy   +2 more
openaire   +1 more source

Positive solutions, positive radial solutions and uniqueness results for some nonlocal elliptic problems

Journal of Elliptic and Parabolic Equations
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Chahinez Bellamouchi, Elmehdi Zaouche
openaire   +2 more sources

Blockchain-Empowered Space-Air-Ground Integrated Networks: Opportunities, Challenges, and Solutions

IEEE Communications Surveys and Tutorials, 2022
Yuntao Wang, Zhou, Jianbing Ni
exaly  

Positive Solutions

2006
Colette De Coster, Patrick Habets
openaire   +1 more source

Positive solutions of

Nonlinear Analysis: Theory, Methods & Applications, 1985
openaire   +1 more source

Ion Dissociation in Ionic Liquids and Ionic Liquid Solutions

Chemical Reviews, 2020
Joan F Brennecke
exaly