Results 11 to 20 of about 225 (44)

A nonlinear parabolic problem with singular terms and nonregular data [PDF]

open access: yes, 2019
We study existence of nonnegative solutions to a nonlinear parabolic boundary value problem with a general singular lower order term and a nonnegative measure as nonhomogeneous datum, of the form $$ \begin{cases} \dys u_t - \Delta_p u = h(u)f ...
Oliva, Francescantonio   +1 more
core   +1 more source

CLASSIFICATION OF EXTINCTION PROFILES FOR A ONE-DIMENSIONAL DIFFUSIVE HAMILTON-JACOBI EQUATION WITH CRITICAL ABSORPTION [PDF]

open access: yes, 2018
International audienceA classification of the behavior of the solutions f (·, a) to the ordinary differential equation (|f ′ |^{p−2} f ′) ′ + f − |f ′ |^{p−1} = 0 in (0, ∞) with initial condition f (0, a) = a and f ′ (0, a) = 0 is provided, according to ...
Iagar, Razvan,, Laurençot, Philippe
core   +1 more source

Carleman estimates and null controllability of a class of singular parabolic equations

open access: yesAdvances in Nonlinear Analysis, 2018
In this paper, we consider control systems governed by a class of semilinear parabolic equations, which are singular at the boundary and possess singular convection and reaction terms.
Du Runmei   +3 more
doaj   +1 more source

Periodic total variation flow of non-divergence type in Rn [PDF]

open access: yes, 2013
We introduce a new notion of viscosity solutions for a class of very singular nonlinear parabolic problems of non-divergence form in a periodic domain of arbitrary dimension, whose diffusion on flat parts with zero slope is so strong that it becomes a ...
Giga, Mi-Ho   +2 more
core   +2 more sources

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   +1 more source

On the viscous Cahn-Hilliard equation with singular potential and inertial term

open access: yes, 2016
We consider a relaxation of the viscous Cahn-Hilliard equation induced by the second-order inertial term~$u_{tt}$. The equation also contains a semilinear term $f(u)$ of "singular" type. Namely, the function $f$ is defined only on a bounded interval of ${
Scala, Riccardo, Schimperna, Giulio
core   +2 more sources

Passing to the Limit in a Wasserstein Gradient Flow: From Diffusion to Reaction [PDF]

open access: yes, 2011
We study a singular-limit problem arising in the modelling of chemical reactions. At finite {\epsilon} > 0, the system is described by a Fokker-Planck convection-diffusion equation with a double-well convection potential.
A. Blanchet   +35 more
core   +6 more sources

Weak formulation for singular diffusion equation with dynamic boundary condition

open access: yes, 2017
In this paper, we propose a weak formulation of the singular diffusion equation subject to the dynamic boundary condition. The weak formulation is based on a reformulation method by an evolution equation including the subdifferential of a governing ...
A. Ito   +19 more
core   +1 more source

Large time behavior for the fast diffusion equation with critical absorption [PDF]

open access: yes, 2016
International audienceWe study the large time behavior of nonnegative solutions to the Cauchy problem for a fast diffusion equation with critical zero order absorption$$\partial_{t}u-\Delta u^m+u^q=0 \quad \quad \hbox{in} \(0,\infty)\times\real^N ...
Benachour, Said   +2 more
core   +1 more source

On a class of fully nonlinear parabolic equations

open access: yesAdvances in Nonlinear Analysis, 2016
We study the homogeneous Dirichlet problem for the fully nonlinear ...
Antontsev Stanislav, Shmarev Sergey
doaj   +1 more source

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