Results 21 to 30 of about 451,720 (336)

Resistive and viscous dynamics of finite-amplitude shear waves at a magnetic X-point [PDF]

open access: yes, 2005
The dynamics and dissipation of axial shear waves, superposed on a planar magnetic X-point in a resistive viscous incompressible plasma, are analyzed numerically and analytically. The interplay of viscous and resistive effects is demonstrated by deriving
Craig, Ian J.D.
core   +2 more sources

Corrigendum to '(Almost) everything you always wanted to know about deterministic control problems in stratified domains'

open access: yesNetworks and Heterogeneous Media, 2018
The aim of this short note is: $(i)$ to report an error in [1]; $(ii)$ to explain why the comparison result of [1] lacks an hypothesis in the definition of subsolutions if we allow them to be discontinuous; $(iii)$ to describe a simple counter ...
Guy Barles, Emmanuel Chasseigne
doaj   +1 more source

Existence of Viscosity Solutions for Weakly Coupled Cooperative Parabolic Systems with Fully Nonlinear Principle Part

open access: yesMathematics
In this paper, the existence of viscosity solutions for weakly coupled, degenerate, and cooperative parabolic systems is studied in a bounded domain. In particular, we consider the viscosity solutions of parabolic systems with fully nonlinear degenerated
Georgi Boyadzhiev, Nikolay Kutev
doaj   +1 more source

Vanishing Viscosity Solutions of the Compressible Euler Equations with Spherical Symmetry and Large Initial Data

open access: yes, 2014
We are concerned with spherically symmetric solutions of the Euler equations for multidimensional compressible fluids, which are motivated by many important physical situations.
Chen, Gui-Qiang G., Perepelitsa, Mikhail
core   +1 more source

A note on quasilinear equations with fractional diffusion

open access: yesMathematics in Engineering, 2021
In this paper, we study the existence of distributional solutions of the following non-local elliptic problem \begin{eqnarray*} \left\lbrace \begin{array}{lll} (-\Delta)^{s}u + |\nabla u|^{p} &= & f \quad\text{ in } \Omega\\ \qquad \qquad
Boumediene Abdellaoui   +2 more
doaj   +1 more source

Analytical Solutions to the Navier-Stokes-Poisson Equations with Density-dependent Viscosity and with Pressure

open access: yes, 2010
We study some particular solutions to the Navier-Stokes-Poisson equations with density-dependent viscosity and with pressure, in radial symmetry. With extension of the previous known blowup solutions for the Euler-Poisson equations / pressureless Navier ...
Hei, Yeung Ling, Manwai, Yuen
core   +1 more source

Path-dependent equations and viscosity solutions in infinite dimension [PDF]

open access: yes, 2017
Path-dependent PDEs (PPDEs) are natural objects to study when one deals with non Markovian models. Recently, after the introduction of the so-called pathwise (or functional or Dupire) calculus (see [15]), in the case of finite-dimensional underlying ...
Cosso, Andrea   +4 more
core   +2 more sources

On the Tonelli method for the degenerate parabolic Cauchy problem with functional argument [PDF]

open access: yesOpuscula Mathematica, 2014
The degenerate parabolic Cauchy problem is considered. A functional argument in the equation is of the Hale type. As a limit of piecewise classical solutions we obtain a viscosity solution of the main problem. Presented method is an adaptation of Tonelli'
Krzysztof A. Topolski
doaj   +1 more source

Equivalence of solutions for non-homogeneous $ p(x) $-Laplace equations

open access: yesMathematics in Engineering, 2023
We establish the equivalence between weak and viscosity solutions for non-homogeneous $ p(x) $-Laplace equations with a right-hand side term depending on the spatial variable, the unknown, and its gradient.
MarĂ­a Medina , Pablo Ochoa
doaj   +1 more source

On the viscosity solutions to Trudinger's equation

open access: yes, 2015
We study the existence of positive viscosity solutions to Trudinger's equation for cylindrical domains $\Omega\times[0, T)$, where $\Omega\subset \mathbb{R}^n,\;n\ge 2,$ is a bounded domain, $T>0$ and $2\leq ...
Bhattacharya, Tilak, Marazzi, Leonardo
core   +1 more source

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