Results 91 to 100 of about 412 (197)

A New Approach to the Rayleigh-Taylor Instability. [PDF]

open access: yesArch Ration Mech Anal, 2021
Gebhard B, Kolumbán JJ, Székelyhidi L.
europepmc   +1 more source

Critical parameter equations for degenerate parabolic equations coupled via nonlinear boundary flux

open access: yesBoundary Value Problems, 2011
This paper deals with the critical parameter equations for a degenerate parabolic system coupled via nonlinear boundary flux. By constructing the self-similar supersolution and subsolution, we obtain the critical global existence parameter equation.
Xu Si, Song Zifen
doaj  

Blow-Up and Global Existence for a Degenerate Parabolic System with Nonlocal Sources

open access: yesDiscrete Dynamics in Nature and Society, 2012
This paper investigates the blow-up and global existence of nonnegative solutions for a class of nonlocal degenerate parabolic system. By using the super- and subsolution techniques, the critical exponent of the system is determined. That is, if Pc=p1q1−(
Ling Zhengqiu, Wang Zejia
doaj   +1 more source

On the Fatou theorem for d_J-bar subsolutions in wedges

open access: yes, 2022
arXiv admin note: text overlap with arXiv:1808.04266, arXiv:1807 ...
openaire   +3 more sources

Existence and nonexistence results for quasilinear semipositone Dirichlet problems

open access: yesElectronic Journal of Differential Equations, 2009
We use the sub/supersolution method to analyze a semipositone Dirichlet problem for the p-Laplacian. To find a positive solution, we therefore focus on a related problem that produces positive subsolutions.
Matthew Rudd
doaj  

Subsolution theorem for the complex Hessian equation

open access: yes, 2012
We prove the subsolution theorem for the complex Hessian equations in a smoothly bounded strongly $m$-pseudoconvex domain, $1 < m < n$, in $\bC^n$.
openaire   +4 more sources

The Obstacle Problem for the A-Harmonic Equation

open access: yesJournal of Inequalities and Applications, 2010
Firstly, we define an order for differential forms. Secondly, we also define the supersolution and subsolution of the A-harmonic equation and the obstacle problems for differential forms which satisfy the A-harmonic equation, and we obtain the relations ...
Zhenhua Cao, Gejun Bao, Haijing Zhu
doaj   +1 more source

Entire subsolutions of fully nonlinear degenerate elliptic equations

open access: yes, 2014
We prove existence and non existence results for fully nonlinear degenerate elliptic inequalities by showing that the classical Keller–Osserman condition on the zero order term is a necessary and sufficient condition for the existence of entire sub solutions.
CAPUZZO DOLCETTA, Italo   +2 more
openaire   +4 more sources

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