Results 1 to 10 of about 204 (48)

Hölder gradient estimates for a class of singular or degenerate parabolic equations

open access: yesAdvances in Nonlinear Analysis, 2017
We prove interior Hölder estimates for the spatial gradients of the viscosity solutions to the singular or degenerate parabolic ...
Imbert Cyril   +2 more
doaj   +2 more sources

A Qualitative Study of (p, q) Singular Parabolic Equations: Local Existence, Sobolev Regularity and Asymptotic Behavior

open access: yesAdvanced Nonlinear Studies, 2021
The purpose of the article is to study the existence, regularity, stabilization and blow-up results of weak solution to the following parabolic (p,q){(p,q)}-singular equation:
Giacomoni Jacques   +2 more
doaj   +1 more source

Blow-up results of the positive solution for a class of degenerate parabolic equations

open access: yesOpen Mathematics, 2021
This paper is devoted to discussing the blow-up problem of the positive solution of the following degenerate parabolic equations: (r(u))t=div(∣∇u∣p∇u)+f(x,t,u,∣∇u∣2),(x,t)∈D×(0,T∗),∂u∂ν+σu=0,(x,t)∈∂D×(0,T∗),u(x,0)=u0(x),x∈D¯.\left\{\begin{array}{ll}{(r ...
Dong Chenyu, Ding Juntang
doaj   +1 more source

On the local behavior of local weak solutions to some singular anisotropic elliptic equations

open access: yesAdvances in Nonlinear Analysis, 2022
We study the local behavior of bounded local weak solutions to a class of anisotropic singular equations of the kind ∑i=1s∂iiu+∑i=s+1N∂i(Ai(x,u,∇u))=0,x∈Ω⊂⊂RNfor1≤s≤(N−1),\mathop{\sum }\limits_{i=1}^{s}{\partial }_{ii}u+\mathop{\sum }\limits_{i=s+1}^{N}{\
Ciani Simone   +2 more
doaj   +1 more source

On a final value problem for a nonhomogeneous fractional pseudo-parabolic equation

open access: yesAlexandria Engineering Journal, 2020
In this paper, we are interested in finding the function u(t,x),(t,x)∈[0,T)×Ω from the final data u(T,x)=ϕ(x), satisfies a nonhomogeneous fractional pseudo-parabolic equation. The problem is stable for the cases σν, the problem is ill-posed (in the sense
Nguyen Hoang Luc   +3 more
doaj   +1 more source

A local estimate for vectorial total variation minimization in one dimension [PDF]

open access: yes, 2018
Let $\boldsymbol u$ be the minimizer of vectorial total variation ($VTV$) with $L^2$ data-fidelity term on an interval $I$. We show that the total variation of $\boldsymbol u$ over any subinterval of $I$ is bounded by that of the datum over the same ...
Giacomelli, Lorenzo, Łasica, Michał
core   +2 more sources

A conditional regularity result for p-harmonic flows [PDF]

open access: yes, 2015
We prove an $\varepsilon$-regularity result for a wide class of parabolic systems $$ u_t-\text{div}\big(|\nabla u|^{p-2}\nabla u) = B(u, \nabla u) $$ with the right hand side $B$ growing like $|\nabla u|^p$.
Katarzyna Ewa Mazowiecka   +4 more
core   +2 more sources

Parabolic BMO and global integrability of supersolutions to doubly nonlinear parabolic equations [PDF]

open access: yes, 2015
We prove that local and global parabolic BMO spaces are equal thus extending the classical result of Reimann and Rychener. Moreover, we show that functions in parabolic BMO are exponentially integrable in a general class of space-time cylinders.
Saari, Olli
core   +1 more source

A natural approach to the asymptotic mean value property for the $p$-Laplacian [PDF]

open access: yes, 2016
Let $1\le p\le\infty$. We show that a function $u\in C(\mathbb R^N)$ is a viscosity solution to the normalized $p$-Laplace equation $\Delta_p^n u(x)=0$ if and only if the asymptotic formula $$ u(x)=\mu_p(\ve,u)(x)+o(\ve^2) $$ holds as $\ve\to 0$ in the ...
Ishiwata, Michinori   +2 more
core   +2 more sources

Modeling and analysis of a phase field system for damage and phase separation processes in solids [PDF]

open access: yes, 2013
In this work, we analytically investigate a multi-component system for describing phase separation and damage processes in solids. The model consists of a parabolic diffusion equation of fourth order for the concentration coupled with an elliptic system ...
Bonetti, Elena   +3 more
core   +3 more sources

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