Results 31 to 40 of about 186 (91)

A system of impulsive degenerate nonlinear parabolic functional‐differential inequalities

open access: yesInternational Journal of Stochastic Analysis, Volume 8, Issue 1, Page 59-68, 1995., 1994
A theorem about a system of strong impulsive degenerate nonlinear parabolic functional‐differential inequalities in an arbitrary parabolic set is proved. As a consequence of the theorem, some theorems about impulsive degenerate nonlinear parabolic differential inequalities and the uniqueness of a classical solution of an impulsive degenerate nonlinear ...
Ludwik Byszewski
wiley   +1 more source

Asymptotic stability for a symmetric parabolic problem modeling Ohmic heating

open access: yesBoundary Value Problems, 2014
We consider the asymptotic behavior of the solution of the non-local parabolic equation ut=(κ(u))rr+(κ(u))rr+f(u)(a+2πb∫01f(u)rdr)2, for 00, with a homogeneous Dirichlet boundary condition.
Mingshu Fan, Anyin Xia, Lei Zhang
semanticscholar   +2 more sources

On the parabolic potentials in degenerate‐type heat equation

open access: yesInternational Journal of Stochastic Analysis, Volume 4, Issue 2, Page 147-160, 1991., 1991
Using distributions theory technique we introduce parabolic potentials for the heat equation with one time‐dependent coefficient (not everywhere positive and continuous) at the highest space‐derivative, discuss their properties, and apply obtained results to three illustrative problems.
Igor Malyshev
wiley   +1 more source

Null controllability for a degenerate population model in divergence form via Carleman estimates

open access: yesAdvances in Nonlinear Analysis, 2019
In this paper we consider a degenerate population equation in divergence form depending on time, on age and on space and we prove a related null controllability result via Carleman estimates.
Fragnelli Genni
doaj   +1 more source

THE EVOLUTION OF AN ANISOTROPIC HYPERBOLIC SCHRODINGER MAP HEAT FLOW

open access: yes, 2015
Solution of Schrödinger map heat flow equation with applied field in 2-dimensional H2 space is obtained. Two different methods are used to construct the norm −1 exact solution. The solution admit a finite time singularity or a global smooth property. AMS
P. Zhong
semanticscholar   +1 more source

The global solution of a diffusion equation with nonlinear gradient term

open access: yesJournal of Inequalities and Applications, 2013
Consider the viscosity solution to the initial boundary value problem of the diffusion equation ut=div(|∇um|p−2∇um)−uq1m|∇um|p1, with p>1, m>0, p1≤2, p>2p1, its initial value u(x,0)=u0(x)∈Lq−1+1m(Ω), 3>q>1 and its boundary ...
Huashui Zhan
semanticscholar   +2 more sources

Optimal global second-order regularity and improved integrability for parabolic equations with variable growth

open access: yesAdvances in Nonlinear Analysis
We consider the homogeneous Dirichlet problem for the parabolic equation ut−div(∣∇u∣p(x,t)−2∇u)=f(x,t)+F(x,t,u,∇u){u}_{t}-{\rm{div}}({| \nabla u| }^{p\left(x,t)-2}\nabla u)=f\left(x,t)+F\left(x,t,u,\nabla u) in the cylinder QT≔Ω×(0,T){Q}_{T}:= \Omega ...
Arora Rakesh, Shmarev Sergey
doaj   +1 more source

A Liouville comparison principle for solutions of semilinear parabolic inequalities in the whole space

open access: yesAdvances in Nonlinear Analysis, 2014
We obtain a new Liouville comparison principle for weak solutions (u,v) of semilinear parabolic second-order partial differential inequalities of the form ut-ℒu-|u|q-1u≥vt-ℒv-|v|q-1v(*)$u_t -{\mathcal {L}}u- |u|^{q-1}u\ge v_t -{\mathcal {L}}v- |v|^{q-1}v\
Kurta Vasilii V.
doaj   +1 more source

Vanishing viscosity limit for a one-dimensional viscous conservation law in the presence of two noninteracting shocks

open access: yesDemonstratio Mathematica
In this article, we study the inviscid limit of the solution to the Cauchy problem of a one-dimensional viscous conservation law, where the second-order term is nonlinear. Under the assumption that the inviscid equation admits a piecewise smooth solution
Feng Li, Wang Jing
doaj   +1 more source

On a fractional thin film equation

open access: yesAdvances in Nonlinear Analysis, 2020
This paper deals with a nonlinear degenerate parabolic equation of order α between 2 and 4 which is a kind of fractional version of the Thin Film Equation.
Segatti Antonio, Vázquez Juan Luis
doaj   +1 more source

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